✦ LIBER ✦

Primary photochemical processes of tetraphenylmethane solids

✍ Scribed by Tien-Sung Lin

Publisher: Elsevier Science
Year: 1973
Tongue: English
Weight: 350 KB
Volume: 19
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(73)80393-8

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✦ Synopsis

Studies of UV irradiated tetraphenylmethane crystals by electron paramagnetic resonance and electronic optical spectroscopy are presented. The primary processes of photochemical reactions are proposed as: (1) (C~HS)JC + Irv -(ChH5)3C-+ CeHs-and (2) 2C6H5---F C~HS-C~H~. No similar effect occurs with other tetraphenyl group IV compounds, triphenylmethanc, or diphcnylmethane.

The steric strain in PhgC and effective resonance in Ph3C. may be responsible for the high quantum yield of the above photochemical reactions.

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