TITLE (Word Style BA Title )

Electron Photodetachment Dissociation of DNA Anions

with Covalently or Noncovalently Bound Chromophores

Valérie Gabelica*,1, Frédéric Rosu1, Edwin De Pauw1, Rodolphe Antoine2, Thibault

Tabarin2, Michel Broyer2, Philippe Dugourd2

1. Mass Spectrometry Laboratory, Université de Liège, Institut de Chimie Bat. B6c, B-4000 Liège,

Belgium.

2. Université Lyon 1 ; CNRS ; LASIM, Bat. A. Kastler, 43 Bd du 11 Novembre 1918, F-69622

Villeurbanne, France.

* Email: [email protected]; Tel: +32-4-3663432; Fax: +32-4-3663413.

Supporting information: list of negative results. 2

Power at OPO Parent Ion Wavelength Irradiation time Example spectrum exit

[dsB]5- 310 nm 5 s 6.5 mW

310 nm:

310 nm 5 s 6.5 mW [dsB+netropsin]5- 355 nm 5 s 30 mW 3

Power at OPO Parent Ion Wavelength Irradiation time Example spectrum exit

[dsB+berenil]5- 355 nm 3 s 30 mW

355 nm 40 mW 480 nm: 430 nm 85 mW 440 nm 105 mW 450 nm 115 mW [dsB+doxorubicin]5- 2 s 460 nm 125 mW 480 nm 105 mW 500 nm 105 mW 520 nm 60 mW 540 nm 75 mW 4

Power at OPO Parent Ion Wavelength Irradiation time Example spectrum exit dCCAGGTCTGAGGCGTCCTGG

490 nm 4 s 100 mW

dCCAGGTCTGAGGCGTCCTGG

450 nm 4 s 100 mW 5

Power at OPO Parent Ion Wavelength Irradiation time Example spectrum exit dCCAGGTCTGAGGCGTCCTGG

+ m-amsacrine 490 nm 4 s 100 mW

dCCAGGTCTGAGGCGTCCTGG

+ m-amsacrine 450 nm 4 s 100 mW 6

Irradiation Power at Parent Ion Wavelength Example spectrum time OPO exit [FAM-dCCAGGTCTGAGGCGTCCTGG]6- 355 nm 480 nm: 440 nm 460 nm 480 nm 2 s  80 mW 500 nm 520 nm 540 nm 560 nm

[dCCAGGTCTGAGGCGTCCTGG- 440 nm: 440 nm DABSYL]6- 460 nm 480 nm 2 s  80 mW 500 nm 520 nm