BELT-SHAPED CYCLOPHANES VIA PHOTODIMERIZATION OF PHENANTHRO-CONDENSED[18]ANNULENES

Authors
MULLER K MEIER H BOUASLAURENT H DESVERGNE JP
Citation
K. Muller et al., BELT-SHAPED CYCLOPHANES VIA PHOTODIMERIZATION OF PHENANTHRO-CONDENSED[18]ANNULENES, Journal of organic chemistry, 61(16), 1996, pp. 5474-5480
Citations number
16
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Journal of organic chemistry → ACNP
ISSN journal
00223263
Volume
61
Issue
16
Year of publication
1996
Pages
5474 - 5480
Database
ISI
SICI code
0022-3263(1996)61:16<5474:BCVPOP>2.0.ZU;2-4
Abstract
A novel cyclophane type can be obtained by photocyclodimerization reac tions of condensed [18]annulenes. Quantitative yields in pure columnar liquid crystalline phases and high yields in 10(-6) M solution raise the inquiry about the unusual dimerization mechanism in this process. Concentration-dependent measurements of the emission and excitation sp ectra and the fluorescence lifetimes reveal a ground state aggregation in solution even at very low concentrations.