PHOTOCHEMICAL ACTIVATION OF DISTAL CHROMOPHORES BY ANTENNA SUBSTITUENTS IN POLYFUNCTIONAL MOLECULES

Authors
MORRISON H AGYIN K JIANG A XIAO C
Citation
H. Morrison et al., PHOTOCHEMICAL ACTIVATION OF DISTAL CHROMOPHORES BY ANTENNA SUBSTITUENTS IN POLYFUNCTIONAL MOLECULES, Pure and applied chemistry, 67(1), 1995, pp. 111-116
Citations number
10
Categorie Soggetti
Chemistry
Journal title
Pure and applied chemistry → ACNP
ISSN journal
00334545
Volume
67
Issue
1
Year of publication
1995
Pages
111 - 116
Database
ISI
SICI code
0033-4545(1995)67:1<111:PAODCB>2.0.ZU;2-W
Abstract
Steroids have been prepared which bear a dimethylphenylsiloxy (DPS) gr oup and additional ketone or olefin functionalities. The DPS group has been used to harvest photons in order to direct the excitation energy to the remote target acceptor groups. Examples of intramolecular sing let-singlet and triplet-triplet energy transfer are described, with th e DPS group placed at C3, C6 or C17. An earlier example of the role of an 11-keto group in acting as a ''singlet/triplet switch'' has been e xtended to activation of an ethylidene group at C17.