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Hydrophobic Acceleration of Electron‐Transfer Fluorescence Quenching Processes between Excited 1‐Alkanoylperylenes and Ferrocene Derivatives
Author(s) -
Shi JiLiang,
Xu JiaYi,
Jiang XiKui
Publication year - 2001
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20010190509
Subject(s) - chemistry , quenching (fluorescence) , fluorescence , intramolecular force , photochemistry , electron transfer , electron acceptor , acceptor , ferrocene , excited state , fluorescence spectroscopy , electron donor , phenothiazine , stereochemistry , organic chemistry , catalysis , physics , electrode , quantum mechanics , nuclear physics , electrochemistry , condensed matter physics , medicine , pharmacology
Coaggregation‐facilitated Electron‐transfer (ET) fluorescence quenching processes between an excited 1‐alkanoylperylene (Pe‐ n, n = 4, 8, 12) as an acceptor and an 1‐alkanoylferrocene (Fc‐m, m = 4, 8, 12, 16) or a 1,1‐dialkanoylferrocene (Fc‐ m ‐2, m =4, 8, 12, 16) as a donor have been investigated by means of fluorescence spectroscopy in dioxane (DX)‐H 2 O binary solvents of different Θ values, where Θ is the volume fraction of the organic component of an aquiorgano mixture. This is a first observation of an ET processes facilitated by hydrophobic‐lipophilic interaction (HLI) with organometallic compounds as donors. The extent of HLI‐driven co‐aggregation between the acceptor and the donor may be assessed from the efficiency of fluorescence quenching, i. e ., the slope B of Eq. (2). The chain‐foldability effect and the intramolecular “self‐satisfaction” of HLI for Fc‐ m ‐2 have been observed. The experimental results show that the behavior of Fc‐ m as a quencher for fluorescence quenching of Pe n is rather similar to that of N ‐alkylsubstituend phenothiazine.