Origin of the temperature dependence of the rate of singlet energy transfer in a three-component truxene-bridged dyads
作者： Adam Langlois , Hai-Jun Xu , Bertrand Brizet , Franck Denat , Jean-Michel Barbe
DOI: 10.1142/S1088424613501150
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摘要: We report a truxene-based dyad built upon one donor (tri-meso-phenylzinc(II)porphyrin) and two acceptors (octa-b-alkylporphyrin free base) in which the exhibits rotation around Ctruxene-Cmeso single bond at 298 K fluid solution but not 77 glass matrix, whereas have very limited motion as they are blocked by b-methyl groups. This case is interesting because all structural spectroscopic parameters affecting rate for singlet energy transfer according to Forster Resonance Energy Transfer only weakly temperature dependent, leaving Dexter mechanism explaining larger variation of transfers with hence providing circumstantial evidence dual (Foster Dexter) dyads (or polyads) S1 excited states.
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