DOCSLIB.ORG

Safety Data Sheet

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Safety Data Sheet SAFETY DATA SHEET Revision Date 10-Feb-2021 Revision Number 2 SECTION 1: IDENTIFICATION OF THE SUBSTANCE/MIXTURE AND OF THE COMPANY/UNDERTAKING 1.1. Product identifier Product Description: Cadmium selenide Cat No. : 11057 CAS-No 1306-24-7 Molecular Formula CdSe 1.2. Relevant identified uses of the substance or mixture and uses advised against Recommended Use Laboratory chemicals. Uses advised against No Information available 1.3. Details of the supplier of the safety data sheet Company Thermo Fisher (Kandel) GmbH . Erlenbachweg 2 76870 Kandel Germany Tel: +49 (0) 721 84007 280 Fax: +49 (0) 721 84007 300 E-mail address [email protected] www.alfa.com Product safety Tel + +049 (0) 7275 988687-0 1.4. Emergency telephone number Carechem 24: +44 (0) 1235 239 670 (Multi-language emergency number) Poison Information Center Mainz www.giftinfo.uni-mainz.de Telephone: +49(0)6131/19240 Exclusively for customers in Austria: Poison Information Center (VIZ) Emergency call 0-24 clock: +43 1 406 43 43 Office hours: Monday to Friday, 8am to 4pm, tel: +43 1 406 68 98 SECTION 2: HAZARDS IDENTIFICATION 2.1. Classification of the substance or mixture CLP Classification - Regulation (EC) No 1272/2008 Physical hazards Based on available data, the classification criteria are not met ______________________________________________________________________________________________ ALFAA11057 Page 1 / 11 SAFETY DATA SHEET Cadmium selenide Revision Date 10-Feb-2021 ______________________________________________________________________________________________ Health hazards Acute oral toxicity Category 3 (H301) Acute Inhalation Toxicity - Dusts and Mists Category 3 (H331) Specific target organ toxicity - (repeated exposure) Category 2 (H373) Environmental hazards Acute aquatic toxicity Category 1 (H400) Chronic aquatic toxicity Category 1 (H410) Full text of Hazard Statements: see section 16 2.2. Label elements Signal Word Danger Hazard Statements H373 - May cause damage to organs through prolonged or repeated exposure H410 - Very toxic to aquatic life with long lasting effects H301 + H331 - Toxic if swallowed or if inhaled Precautionary Statements P264 - Wash face, hands and any exposed skin thoroughly after handling P301 + P310 - IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician P304 + P340 - IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing P311 - Call a POISON CENTER or doctor/physician P403 + P233 - Store in a well-ventilated place. Keep container tightly closed P260 - Do not breathe dust/fume/gas/mist/vapors/spray 2.3. Other hazards Toxic to terrestrial vertebrates SECTION 3: COMPOSITION/INFORMATION ON INGREDIENTS 3.1. Substances Component CAS-No EC-No. Weight % CLP Classification - Regulation (EC) No 1272/2008 Cadmium selenide 1306-24-7 EEC No. 215-148-3 <=100 Acute Tox. 3 (H301) Acute Tox. 3 (H331) STOT RE 2 (H373) Aquatic Acute 1 (H400) Aquatic Chronic 1 (H410) ______________________________________________________________________________________________ ALFAA11057 Page 2 / 11 SAFETY DATA SHEET Cadmium selenide Revision Date 10-Feb-2021 ______________________________________________________________________________________________ Component Concentration limits M-Factor Component notes Cadmium selenide - 10 (acute) Note 1 1 (Chronic) Note Note 1: The concentration stated or, in the absence of such concentrations, the generic concentrations of this Regulation (Table 3.1) or the generic concentrations of Directive 1999/45/EC (Table 3.2), are the percentages by weight of the metallic element calculated with reference to the total weight of the mixture Full text of Hazard Statements: see section 16 SECTION 4: FIRST AID MEASURES 4.1. Description of first aid measures General Advice Show this safety data sheet to the doctor in attendance. Immediate medical attention is required. Eye Contact In the case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. Skin Contact Wash off immediately with plenty of water for at least 15 minutes. Immediate medical attention is required. Ingestion Do NOT induce vomiting. Call a physician or poison control center immediately. Inhalation Remove to fresh air. If not breathing, give artificial respiration. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Immediate medical attention is required. Self-Protection of the First Aider Ensure that medical personnel are aware of the material(s) involved, take precautions to protect themselves and prevent spread of contamination. 4.2. Most important symptoms and effects, both acute and delayed None reasonably foreseeable. 4.3. Indication of any immediate medical attention and special treatment needed Notes to Physician Treat symptomatically. SECTION 5: FIREFIGHTING MEASURES 5.1. Extinguishing media Suitable Extinguishing Media Not combustible. Extinguishing media which must not be used for safety reasons No information available. 5.2. Special hazards arising from the substance or mixture Do not allow run-off from fire-fighting to enter drains or water courses. ______________________________________________________________________________________________ ALFAA11057 Page 3 / 11 SAFETY DATA SHEET Cadmium selenide Revision Date 10-Feb-2021 ______________________________________________________________________________________________ Hazardous Combustion Products Selenium oxide, Hydrogen selenide, Cadmium oxide. 5.3. Advice for firefighters As in any fire, wear self-contained breathing apparatus pressure-demand, MSHA/NIOSH (approved or equivalent) and full protective gear. Thermal decomposition can lead to release of irritating gases and vapors. SECTION 6: ACCIDENTAL RELEASE MEASURES 6.1. Personal precautions, protective equipment and emergency procedures Ensure adequate ventilation. Use personal protective equipment as required. Avoid dust formation. Keep people away from and upwind of spill/leak. Evacuate personnel to safe areas. 6.2. Environmental precautions Do not flush into surface water or sanitary sewer system. Do not allow material to contaminate ground water system. Prevent product from entering drains. Local authorities should be advised if significant spillages cannot be contained. Should not be released into the environment. 6.3. Methods and material for containment and cleaning up Sweep up and shovel into suitable containers for disposal. Avoid dust formation. 6.4. Reference to other sections Refer to protective measures listed in Sections 8 and 13. SECTION 7: HANDLING AND STORAGE 7.1. Precautions for safe handling Wear personal protective equipment/face protection. Do not get in eyes, on skin, or on clothing. Avoid dust formation. Use only under a chemical fume hood. Do not breathe (dust, vapor, mist, gas). Do not ingest. If swallowed then seek immediate medical assistance. Hygiene Measures Handle in accordance with good industrial hygiene and safety practice. Keep away from food, drink and animal feeding stuffs. Do not eat, drink or smoke when using this product. Remove and wash contaminated clothing and gloves, including the inside, before re-use. Wash hands before breaks and after work. 7.2. Conditions for safe storage, including any incompatibilities Keep container tightly closed in a dry and well-ventilated place. Technical Rules for Hazardous Substances (TRGS) 510 Storage Class (LGK) Storage Class/LGK 6.1D (Germany) 7.3. Specific end use(s) Use in laboratories SECTION 8: EXPOSURE CONTROLS/PERSONAL PROTECTION 8.1. Control parameters ______________________________________________________________________________________________ ALFAA11057 Page 4 / 11 SAFETY DATA SHEET Cadmium selenide Revision Date 10-Feb-2021 ______________________________________________________________________________________________ Exposure limits List source(s): UK - EH40/2005 Work Exposure Limits, Third edition. Published 2018. Component European Union The United Kingdom France Belgium Spain Cadmium selenide STEL: 0.075 mg/m3 15 TWA / VME: 0.004 TWA / VLA-ED: 0.01 min mg/m3 (8 heures). mg/m3 (8 horas) TWA: 0.025 mg/m3 8 hr indicative limit TWA / VLA-ED: 0.002 STEL: 0.3 mg/m3 15 min mg/m3 (8 horas) TWA / TWA: 0.1 mg/m3 8 hr VLA-ED: 0.1 mg/m3 (8 horas) Component Italy Germany Portugal The Netherlands Finland Cadmium selenide TWA: 0.05 mg/m3 (8 TWA: 0.002 mg/m3 8 Stunden). AGW - horas TWA: 0.2 mg/m3 8 exposure factor 1 horas TWA: 0.001 TWA: 0.02 mg/m3 (8 mg/m3 8 horas Stunden). MAK TWA: 0.004 mg/m3 8 Höhepunkt: 0.16 mg/m3 horas Haut Component Austria Denmark Switzerland Poland Norway Cadmium selenide MAK-KZW: 0.3 mg/m3 Haut/Peau TWA: 0.05 mg/m3 8 15 Minuten STEL: 0.16 mg/m3 15 timer MAK-TMW: 0.1 mg/m3 8 Minuten Stunden TWA: 0.015 mg/m3 8 Stunden TWA: 0.004 mg/m3 8 Stunden TWA: 0.02 mg/m3 8 Stunden Biological limit values This product, as supplied, does not contain any hazardous materials with biological limits established by the region specific regulatory bodies Monitoring methods BS EN 14042:2003 Title Identifier: Workplace atmospheres. Guide for the application and use of procedures for the assessment of exposure to chemical and biological agents. MDHS14/3 General methods for sampling and gravimetric analysis of respirable and inhalable dust MDHS10/2 Cadmium and inorganic compounds of cadmium in air Laboratory method using flame atomic absorption spectrometry
Load more

Recommended publications
  • Selenium Nutritional, Toxicologic, and Clinical Aspects ANNA M
    160 Articles Selenium Nutritional, Toxicologic, and Clinical Aspects ANNA M. FAN, PhD, Berkeley, and KENNETH W. KIZER, MD, MPH, Sacramento, California This is one ofa series ofarticles from western state public health departments. Despite the recent findings ofenvironmental contamination, selenium toxicosis in humans is exceedingly rare in the United States, with the few known cases resulting from industrial accidents and an episode involving the ingestion of superpotent selenium supplements. Chronic selenosis is essentially unheard of in this country because of the typical diversity of the American diet. Nonetheless, because ofthe growing public interest in selenium as a dietary supplement and the occurrence ofenvironmental selenium contamination, medical practitioners should be familiar with the nutritional, toxicologic, and clinical aspects of this trace element. (Fan AM, Kizer KW: Selenium-Nutritional, toxicologic, and clinical aspects. West J Med 1990 Aug; 153:160-167) Since the recognition of the nutritional essentiality of and other parts of the world.4 Highly seleniferous soils selenium (Se) in animals in 1957, there has been ever- yielding selenium-toxic plants (such as Astragalus bisulca- increasing interest in this trace element. This interest has tus) are widespread in South Dakota, Wyoming, Montana, heightened in the past decade concomitant with the recog- North Dakota, Nebraska, Kansas, Colorado, Utah, Arizona, nition of selenium's essential nutritional role in humans and New Mexico. Soil containing high selenium concentra- and reports of selenium toxicity among humans. Interest in tions but not yielding toxic plants is found in Hawaii. selenium has been further aroused recently by the findings of elevated levels of this compound in certain soils and wa- Chemical Forms ter sources in the western United States, leading to adverse Selenium is a nonmetallic element chemically related to effects on fish and wildlife (T.
    [Show full text]
  • The Electronic and Optical Properties of Close Packed Cadmium Selenide Quantum Dot Solids
    The Electronic and Optical Properties of Close Packed Cadmium Selenide Quantum Dot Solids by Cherie Renee Kagan B. S. E. Materials Science and Engineering B. A. Mathematics University of Pennsylvania, Philadelphia, PA 1991 Submitted to the Department of Materials Science and Engineering in Partial Fulfillment of the Requirements for the Degree of DOCTOR OF PHILOSOPHY at the MASSACHUSETTS INSTITUTE OF TECHNOLOGY September 1996 0 1996 Massachusetts Institute of Technology All rights reserved Signature of the Author Departmenf of Materials Science and Engineering August 9, 1996 Certified by_ Moungi G. Bawendi Professor of Chemistry Thesis Supervisor Accepted by Linn W. Hobbs John F. Elliott Professor of Materials Science and Engineering Chair, Department Committee on Graduate Students AROHIvES ()F Tac(.!-otodY SEP 2 71996 Room 14-0551 77 Massachusetts Avenue Cambridge, MA 02139 Ph: 617.253.2800 MITLbries Email: [email protected] Document Services http://Iibraries.mit.eduldocs DISCLAIMER OF QUALITY Due to the condition of the original material, there are unavoidable flaws in this reproduction. We have made every effort possible to provide you with the best copy available. If you are dissatisfied with this product and find it unusable, please contact Document Services as soon as possible. Thank you. The images contained in this document are of the best quality available. 2 3 The Electronic and Optical Properties of Close Packed Cadmium Selenide Quantum Dot Solids by Cherie Renee Kagan - Submitted to the Department of Materials Science and Engineering on August 9, 1996 in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in Materials Science and Engineering Abstract The synthesis, structural characterization, optical spectroscopy, and electronic characterization of close packed solids prepared from CdSe QD samples tunable in size from 17 to 150 A in diameter (a<4.5%) are presented.
    [Show full text]
  • Table of Contents (Print, Part 1)
    CONTENTS - Continued PHYSICAL REVIEW B THIRD SERIES, VOLUME 90, NUMBER 16 OCTOBER 2014-15(II) COMMENTS Comment on “Canonical magnetic insulators with isotropic magnetoelectric coupling” (3 pages) ............... 167101 J. M. Perez-Mato, Samuel V. Gallego, E. S. Tasci, L. Elcoro, and M. I. Aroyo Reply to “Comment on ‘Canonical magnetic insulators with isotropic magnetoelectric coupling’ ” (1 page) . 167102 Sinisa Coh and David Vanderbilt Comment on “Ideal strength and phonon instability in single-layer MoS2” (3 pages) .......................... 167401 Ryan C. Cooper, Jeffrey W. Kysar, and Chris A. Marianetti Reply to “Comment on ‘Ideal strength and phonon instability in single-layer MoS2’”(3 pages) ................ 167402 Tianshu Li The editors and referees of PRB find these papers to be of particular interest, importance, or clarity. Please see our Announcement Phys. Rev. B 77, 130001 (2008). CONTENTS - Continued PHYSICAL REVIEW B THIRD SERIES, VOLUME 90, NUMBER 16 OCTOBER 2014-15(II) Readout and dynamics of a qubit built on three quantum dots (12 pages) .................................... 165427 Jakub Łuczak and Bogdan R. Bułka Experimental verification of reciprocity relations in quantum thermoelectric transport (6 pages) ................ 165428 J. Matthews, F. Battista, D. Sanchez,´ P. Samuelsson, and H. Linke Noncollinear magnetic phases and edge states in graphene quantum Hall bars (5 pages) ....................... 165429 J. L. Lado and J. Fernandez-Rossier´ Roton-maxon spectrum and instability for weakly interacting dipolar excitons in a semiconductor layer (9 pages) 165430 A. K. Fedorov, I. L. Kurbakov, and Yu. E. Lozovik Influence of edge and field effects on topological states of germanene nanoribbons from self-consistent calculations (7 pages) ................................................................................ 165431 Lars Matthes and Friedhelm Bechstedt Electronic structure and magnetic properties of cobalt intercalated in graphene on Ir(111) (10 pages) ..........
    [Show full text]
  • Solid State Recrystallization of II-VI Semiconductors : Application to Cadmium Telluride, Cadmium Selenide and Zinc Selenide R
    Solid State Recrystallization of II-VI Semiconductors : Application to Cadmium Telluride, Cadmium Selenide and Zinc Selenide R. Triboulet, J. Ndap, A. El Mokri, A. Tromson Carli, A. Zozime To cite this version: R. Triboulet, J. Ndap, A. El Mokri, A. Tromson Carli, A. Zozime. Solid State Recrystallization of II-VI Semiconductors : Application to Cadmium Telluride, Cadmium Selenide and Zinc Selenide. J. Phys. IV, 1995, 05 (C3), pp.C3-141-C3-149. 10.1051/jp4:1995312. jpa-00253678 HAL Id: jpa-00253678 https://hal.archives-ouvertes.fr/jpa-00253678 Submitted on 1 Jan 1995 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. JOURNAL DE PHYSIQUE IV Colloque C3, supplCment au Journal de Physique 111, Volume 5, avril 1995 Solid State Recrystallization of 11-VI Semiconductors: Application to Cadmium Telluride, Cadmium Selenide and Zinc Selenide R. Triboulet, 3.0. Ndap, A. El Mokri, A. Tromson Carli and A. Zozime CNRS, Laboratoire de Physique des Solides de Bellevue, 1 place Aristide Briand, F 92195 Meudon cedex, France Abstract : Solid state recrystallization (SSR) has been very rarely used for semiconductors. It has nevertheless been proposed, and industrially used, for the single crystal growth of cadmium mercury telluride according to a quench-anneal process.
    [Show full text]
  • Design and Characterization of a Process for Bulk Synthesis of Cadmium Selenide Quantum Dots
    CALIFORNIA POLYTECHNIC STATE UNIVERSITY OF SAN LUIS OBISPO Design and Characterization of a Process for Bulk Synthesis of Cadmium Selenide Quantum Dots Susan Harada Materials Engineering Department California Polytechnic State University Advisor Dr. Richard Savage June 2, 2011 Approval Page Project Title: Design and Characterization of a Process for Bulk Synthesis of Cadmium Selenide Quantum Dots Author: Susan Harada Date Submitted: June 2, 2011 CAL POLY STATE UNIVERSITY Materials Engineering Department Since this project is a result of a class assignment, it has been graded and accepted as fulfillment of the course requirements. Acceptance does not imply technical accuracy or reliability. Any use of information in this report is done at the risk of the user. These risks may include catastrophic failure of the device or infringement of patent or copyright laws. The students, faculty, and staff of Cal Poly State University, San Luis Obispo cannot be held liable for any misuse of the project. Prof. Richard Savage ____________________________ Faculty Advisor Signature Prof. Trevor Harding ____________________________ Department Chair Signature ii Acknowledgements I would like to thank the following people for their help during my senior project: Dr. Richard Savage for guidance and support Dr. Philip Costanzo for expertise and insight Josh Angell for helping out all the time Boeing for project funding General LED for project funding iii Table of Contents Acknowledgements .....................................................................................................................................
    [Show full text]
  • Synthesis of Cadmium Selenide Quantum Dots for Fabrication of Hybrid Light Emitting Diodes
    University of Louisville ThinkIR: The University of Louisville's Institutional Repository Electronic Theses and Dissertations 4-2014 Synthesis of cadmium selenide quantum dots for fabrication of hybrid light emitting diodes. Michael McCreary 1991- University of Louisville Follow this and additional works at: https://ir.library.louisville.edu/etd Recommended Citation McCreary, Michael 1991-, "Synthesis of cadmium selenide quantum dots for fabrication of hybrid light emitting diodes." (2014). Electronic Theses and Dissertations. Paper 941. https://doi.org/10.18297/etd/941 This Master's Thesis is brought to you for free and open access by ThinkIR: The University of Louisville's Institutional Repository. It has been accepted for inclusion in Electronic Theses and Dissertations by an authorized administrator of ThinkIR: The University of Louisville's Institutional Repository. This title appears here courtesy of the author, who has retained all other copyrights. For more information, please contact [email protected]. SYNTHESIS OF CADMIUM SELENIDE QUANTUM DOTS FOR FABRICATION OF HYBRID LIGHT EMITTING DIODES By Michael Zachary McCreary B.S. Ch.E., University of Louisville, May 2013 A Thesis Submitted to the Faculty of the University of Louisville J. B. Speed School of Engineering as Partial Fulfillment of the Requirements for the Professional Degree MASTER OF ENGINEERING Department of Chemical Engineering April 2014 ii SYNTHESIS OF CADMIUM SELENIDE QUANTUM DOTS FOR FABRICATION OF HYBRID LIGHT EMITTING DIODES Submitted By:__________________________________ Michael Zachary McCreary A Thesis Approved on ___________________________________ (Date) By the Following Reading and Examination Committee: ___________________________________ Delaina A. Amos, Thesis Director ___________________________________ Mahendra K. Sunkara ___________________________________ Robert W. Cohn ___________________________________ Gerold A.
    [Show full text]
  • Recent Progress in Thermoelectric Materials
    University of Wollongong Research Online Australian Institute for Innovative Materials - Papers Australian Institute for Innovative Materials 1-1-2014 Recent progress in thermoelectric materials Chao Han University of Wollongong, [email protected] Zhen Li University of Wollongong, [email protected] S X. Dou University of Wollongong, [email protected] Follow this and additional works at: https://ro.uow.edu.au/aiimpapers Part of the Engineering Commons, and the Physical Sciences and Mathematics Commons Recommended Citation Han, Chao; Li, Zhen; and Dou, S X., "Recent progress in thermoelectric materials" (2014). Australian Institute for Innovative Materials - Papers. 1092. https://ro.uow.edu.au/aiimpapers/1092 Research Online is the open access institutional repository for the University of Wollongong. For further information contact the UOW Library: [email protected] Recent progress in thermoelectric materials Abstract Direct conversion of heat into electricity through advanced thermoelectric (TE) materials has been one of the most attractive solutions to the severe environmental and energy issues facing humanity. In recent years, great progress has been made in improving their dimensionless figure of merit (ZT), which determines the conversion efficiency of TE vices.de ZT is related to three “interlocked” factors—the Seebeck coefficient, electrical conductivity, and thermal conductivity. These three factors are interdependent in bulk TE materials, and altering one changes the other two. The difficulty in simultaneously optimizing them caused TE research to stagnate, until great reductions in thermal conductivity were both theoretically and experimentally proven in nanomaterials in 1993. In this review, we first introduce some TE fundamentals and then review the most recently improvements in ZT in different kinds of inorganic and organic TE materials, which is followed by an investigation of the outlook for new directions in TE technology.
    [Show full text]
  • "The Optoelectronic Properties of Nanoparticles
    THE UNIVERSITY OF CHICAGO THE OPTOELECTRONIC PROPERTIES OF NANOPARTICLES FROM FIRST PRINCIPLES CALCULATIONS A DISSERTATION SUBMITTED TO THE FACULTY OF THE INSTITUTE FOR MOLECULAR ENGINEERING IN CANDIDACY FOR THE DEGREE OF DOCTOR OF PHILOSOPHY BY NICHOLAS PETER BRAWAND CHICAGO, ILLINOIS JUNE 2017 Copyright c 2017 by Nicholas Peter Brawand All Rights Reserved To my wife, Tabatha TABLE OF CONTENTS LIST OF FIGURES . vi LIST OF TABLES . xii ABSTRACT . xiv 1 INTRODUCTION . 1 2 FIRST PRINCIPLES CALCULATIONS . 4 2.1 Methodological Foundations . .4 2.1.1 Density Functional Theory . .4 2.1.2 Many Body Perturbation Theory . .6 2.2 The Generalization of Dielectric Dependent Hybrid Functionals to Finite Sys- tems........................................8 2.2.1 Introduction . .8 2.2.2 Theory . 10 2.2.3 Results . 12 2.3 Self-Consistency of the Screened Exchange Constant Functional . 19 2.3.1 Introduction . 19 2.3.2 Results . 20 2.3.3 Effects of Self-Consistency . 30 2.4 Constrained Density Functional Theory and the Self-Consistent Image Charge Method . 35 2.4.1 Introduction . 36 2.4.2 Methodology . 39 2.4.3 Verification . 42 2.4.4 Application to silicon quantum dots . 52 3 OPTICAL PROPERTIES OF ISOLATED NANOPARTICLES . 57 3.1 Nanoparticle Blinking . 57 3.1.1 Introduction . 57 3.1.2 Structural Models . 60 3.1.3 Theory and Computational Methods . 61 3.1.4 Results . 64 3.1.5 Analysis of Blinking Processes . 68 3.2 Tuning the Optical Properties of Nanoparticles: Experiment and Theory . 70 3.2.1 Introduction . 70 3.2.2 Results . 72 4 CHARGE TRANSPORT PROPERTIES OF NANOPARTICLES .
    [Show full text]
  • Ultrasmall Particles of Cdse and Cds Formed in Nafion by an Ion-Dilution Technique
    Subscriber access provided by Univ. of Texas Libraries Ultrasmall particles of cadmium selenide and cadmium sulfide formed in Nafion by an ion-dilution technique Eugene S. Smotkin, R. Malcolm. Brown, L. K. Rabenberg, K. Salomon, Allen J. Bard, Alan. Campion, Marye Anne. Fox, Thomas E. Mallouk, Stephen E. Webber, and John M. White J. Phys. Chem., 1990, 94 (19), 7543-7549 • DOI: 10.1021/j100382a044 Downloaded from http://pubs.acs.org on January 26, 2009 More About This Article The permalink http://dx.doi.org/10.1021/j100382a044 provides access to: • Links to articles and content related to this article • Copyright permission to reproduce figures and/or text from this article Journal of Physical Chemistry is published by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 J. Pkys. Ckem. 1990, 94, 7543-7549 7543 period. The interaction between the phenyl groups is attractive when the phenyl ring configuration maximizes the porbital overlap between C2and C2,, and it is repulsive when the H2-H2, repulsion dominates. Thus, there is a narrow range of angles @ and a for which the barrier to DHP formation is low, as shown in Figure 2. When the repulsive interaction dominates, the symmetric phenyl twist couples with the ethylenic torsion, converting the initial phenyl twisting motion into ethylenic torsion leading to cis-trans isomerization. The quantum yield measurements by Fischer and co-workers imply that the branching ratio between cis-trans and DHP routes to nonradiative decay is 7030.' This 0' branching ratio is interpreted to be the fraction of configuration 95- 110' 125~ 140' space that leads to DHP formation during one phenyl twisting Phenyl-Ethylene Bend Angles (a) vibration.
    [Show full text]
  • Pdf Version of This Thesis
    DECOMPOSITION OF CdSe QUANTUM DOTS BY E. coli AND AN ANTARCTIC BACTERIUM __________________ A Thesis Presented to The Faculty of the Department of Chemistry Sam Houston State University __________________ In Partial Fulfillment of the Requirements for the Degree of Masters of Science __________________ by Hemantha K. Siyambalagoda August, 2016 DECOMPOSITION OF CdSe QUANTUM DOTS BY E. coli AND AN ANTARCTIC BACTERIUM by Hemantha K. Siyambalagoda ________________________ APPROVED: Dr. Thomas G. Chasteen Thesis Director Dr. Richard E. Norman Committee Member Dr. Donovan Haines Committee Member Dr. John B. Pascarella, Dean College of Science DEDICATION This written document symbolizes my enthusiasm to pursue education to this level and is dedicated to my beloved parents who encouraged and inspired me at the beginning and to my dear teacher, Dr. Thomas G. Chasteen, for his patience, great understanding and memorable teaching at the end. iii ABSTRACT Siyambalagoda, Hemantha K., Decomposition of CdSe Quantum Dots by E. coli and an Antarctic Bacterium. Master of Science (Chemistry), August, 2016, Sam Houston State University, Huntsville, Texas. There were three phases in this research work. In the first phase, in general, the research time and work were dedicated to searching for viable quantum dot-tolerant bacteria, growing and storing metalloid-resistant bacteria, and studying CdSe quantum dot synthetic techniques in which incubation times and temperature of the synthetic processes were examined. In the second phase of research, time and work were committed to bacterial growth curve experiments in which we found: 1) that a bacterium isolated from Antarctica, A0LBCd, had a higher specific growth rate in aerobic conditions than wild-type E.
    [Show full text]
  • Application for Rohs Exemption: Cadmium in LCD Quantum Dot Light Control Films and Components
    Application for RoHS Exemption: Cadmium in LCD Quantum Dot Light Control Films and Components 1. Name and address of applicant John Van Derlofske, Ph. D. | Senior Research Scientist 3M Optical Systems Division 3M Center, Bldg 235-1E-54 | Maplewood, MN 55144 Office: 651.736.8271 [email protected] | www.mmm.com 2. Summary of the application Quantum dot light control films are a new technology that has been developed to enable liquid crystal displays (LCD) to give a technically superior image with a much higher range of colors than is currently possible from other commercially available LCD technologies. These thin films contain cadmium for which substitution is currently not technically practical. Traditional LCDs display only a fraction of the colors that are visible to the human eye. In fact, they do not even produce the same range of color that cathode ray (CRT) technology did when it was introduced in the 1950’s. Quantum dot technology can achieve a significantly larger range of colors (a 60% - 100% improvement) giving the viewer noticeably better color images. Quantum dot films function by converting light of one color into a different color within a precise wavelength range that can be tailored by control of the quantum dot particles. Alternative LCD technologies give broader ranges of colors which cannot be tailored to optimum wavelengths. Recently OLED displays have been developed and have been used mainly for small-size screens of smart phones, etc., as manufacture of larger size OLEDs have proved to be technically challenging. Recently, some OLED manufacturers have claimed that larger size OLEDs can be constructed and will give the same color gamut as quantum dot films, but the energy consumption of an OLED display is estimated to be significantly higher than quantum dot film LCDs.
    [Show full text]
  • Safety Data Sheet Acc
    Page 1/7 Safety Data Sheet acc. to OSHA HCS Printing date 01/22/2014 Reviewed on 10/23/2012 1 Identification Product identifier Product name: Cadmium selenide Stock number: 36323 CAS Number: 1306-24-7 EC number: 215-148-3 Index number: 034-002-00-8 Relevant identified uses of the substance or mixture and uses advised against. No further relevant information available. Identified use: SU24 Scientific research and development Details of the supplier of the safety data sheet Manufacturer/Supplier: Alfa Aesar, A Johnson Matthey Company Johnson Matthey Catalog Company, Inc. 30 Bond Street Ward Hill, MA 01835-8099 Tel: 800-343-0660 Fax: 800-322-4757 Email: [email protected] www.alfa.com Information Department: Health, Safety and Environmental Department Emergency telephone number: During normal hours the Health, Safety and Environmental Department at (800) 343-0660. After normal hours call Carechem 24 at (866) 928-0789. 2 Hazard(s) identification Classification of the substance or mixture Classification according to Regulation (EC) No 1272/2008 GHS06 Skull and crossbones Acute Tox. 3 H301 Toxic if swallowed. Acute Tox. 3 H331 Toxic if inhaled. GHS08 Health hazard STOT RE 2 H373 May cause damage to the central nervous system, the kidneys, the liver, the reproductive system, the digestive system and the blood tissue through prolonged or repeated exposure. Route of exposure: Oral, Inhalative. Classification according to Directive 67/548/EEC or Directive 1999/45/EC T; Toxic R23/25: Toxic by inhalation and if swallowed. N; Dangerous for the environment R50/53: Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
    [Show full text]