Structure dependence of intramolecular photoinduced electron transfer in 9-aminoacridine benzoyl esters dyads linked by a polyether chain |
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Authors: | Shunlai Li Hongjian Tian Qingfu Zhou Zonghe Li Huijun Xu |
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Institution: | (1) Institute of Photographic Chemistry, Chinese Academy of Sciences, 100101 Beijing, China;(2) Department of Chemistry, Beijing Normal University, 100875 Beijing, China |
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Abstract: | Conclusions Both experimental observations and theoretical calculations indicated that: (I) The flexible dyads reported in this paper
exist preferentially in folded conformations in which the donor and the acceptor are held in close proximity. This allows
overlap of the orbitals of each moiety leading to very efficient intramolecular fluorescence quenching. (ii) Quenching of
the fluorescence of the donor in the dyads via electron transfer depends on the electron affinity of the acceptor. (iii) The
electron-attracting ability of the acceptors in the dyads is strongly influenced by the type and relative spatial disposition
of the substituents. |
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Keywords: | polyether donor-acceptor dyads intramolecular photoinduced electron transfer |
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