Citation: Chen Ho TUNG, Li Zhu WU. ENHANCEMENT OF INTRAMOLECULAR EXCIMER FORMATION AND PHOTODIMERIZATION OF POLYETHERS BEARING NAPHTHALENE CHROMOPHORES VIA COMPLEXATION WITH CATIONS[J]. Chinese Chemical Letters, ;1995, 6(2): 113-116. shu

ENHANCEMENT OF INTRAMOLECULAR EXCIMER FORMATION AND PHOTODIMERIZATION OF POLYETHERS BEARING NAPHTHALENE CHROMOPHORES VIA COMPLEXATION WITH CATIONS

Chen Ho TUNG ,
Li Zhu WU

Institute of Pnotographic Chemistry, Academia Sinica. Beijing 100101

Received Date: 26 September 1994

Fund Project: This work is supported by the National Science Foundation of China.

The fluorescence spectra and photodimerization of naphthalene end-labelled poly(ethylene glycol)oligomers(N-P_n-N)in methanol in the prescence of alkali cations have been investigated.The ion enhances or inhibits intramolecular excimer formation and photodimerization of N-P_n-N,depending on the size of the ion and the length of the polyether chain.This observation suggests that the polyether chain binds the ion,thus adopts a crown ether-like conformation.
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