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Conformational Dynamics of Charge-Transfer States in Donor−Bridge−Acceptor Systems

✍ Scribed by Xavier Y. Lauteslager; Ivo H. M. van Stokkum; H. John van Ramesdonk; Dick Bebelaar; Jan Fraanje; Kees Goubitz; Henk Schenk; Albert M. Brouwer; Jan W. Verhoeven

Publisher: John Wiley and Sons
Year: 2001
Tongue: English
Weight: 532 KB
Volume: 2001
Category: Article
ISSN: 1434-193X
DOI: 10.1002/1099-0690(200108)2001:16<3105::aid-ejoc3105>3.0.co;2-i

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✦ Synopsis

Donor-acceptor compounds containing a phenylenediamine electron donor and a naphthalene, a cyanobenzene, or a cyanonaphthalene acceptor were studied. The two chromophores are connected by three different bridging units, consisting of CH 2 groups linked to a semiflexible piperidine or piperazine ring or to a rigid 2,5-diazabicyclo[2.2.1]heptane group. All donor-acceptor compounds show photoinduced charge separation, resulting in the formation of a compact charge-transfer (CCT) state in nonpolar solvents. The conformational change needed to arrive at this species is imposs- [a]

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