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Effect of inhomogeneous broadening on the surface photochemistry of phthalazine

✍ Scribed by Jung Sang Suh; Dae Hong Jeong; Mi Sun Lee

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
92 KB
Volume
30
Category
Article
ISSN
0377-0486

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✦ Synopsis

The amount of photoproduct of phthalazine adsorbed on silver surfaces was examined by observing SERS spectra. Some of the phthalazine adsorbed on silver surface did not photoreact even with prolonged irradiation and the relative amount of photoproduct was larger on irradiation with two or multi laser wavelengths than with one. This is interpreted as reflecting inhomogeneous broadening of the excited state of molecules adsorbed on metal surfaces.

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Alkyl aryl ketones undergo Type II photoreaction both on a silica-gel surface and in solution. The amount of acetophenone produced from valerophenone increases linearly with increase in the amount of valerophenone loaded at coverage below ca 60%. The effect of the alkyl chain length on the Type II p