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Heptacyclo[6.6.0.02,6.03,13.04,11.05,9.010,14]tetradecane: a new type of spacer for mediating electron transfer processes

✍ Scribed by Nan-Rong Chiou; Tahsin J Chow; Chong-Yow Chen; Ming-Ann Hsu; Hong-Chuan Chen

Book ID
104211414
Publisher
Elsevier Science
Year
2001
Tongue
French
Weight
76 KB
Volume
42
Category
Article
ISSN
0040-4039

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✦ Synopsis

A series of derivatives of the titled compound with donor and acceptor substituents were prepared. Efficient fluorescence quenching was observed for the molecules in which donor and acceptor p-chromophores are coplanar. Charge recombination of the radical ion pairs resulted in broad charge transfer bands centered at ca. 510 nm. Twisting the donor and acceptor chromophores 90Β°with respect to each other seemed to retard the electron transfer process.

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## 6 13 II 59 1014 The rod-shaped hydrocarbon molecules 1 and 2 are synthesized from heptacyclo[6.6.0.02' .03' .04' .0, .0 ' ]tetradecane (HCTD) derivatives according to Barton's procedure, where the structures of 1 and the corresponding diketone of 2 belong to D2h and D~ symmetries, respectively