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首页> 外文期刊>Chemistry: A European journal >A Panchromatic Supramolecular Fullerene-Based Donor-Acceptor Assembly Derived from a Peripherally Substituted Bodipy-Zinc Phthalocyanine Dyad
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A Panchromatic Supramolecular Fullerene-Based Donor-Acceptor Assembly Derived from a Peripherally Substituted Bodipy-Zinc Phthalocyanine Dyad

机译：全色超分子富勒烯为基础的供体-受体组装体从周围取代的Bodipy-锌酞菁二元化合物衍生而来。

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摘要

A panchromatic 4,4-difluoro4-bora-3a,4a-diaza-s-indacene -zinc phthalocyanine conjugate (Bodipy-ZnPc) 1 was synthesized starting from phthalocyanine aldehyde 4, via dipyrromethane 3 and dipyrromethane 2. Conjugate I represents the first example in which it Bodipy unit is tethered to the peripheral position of it phthalocyanine core. Electrochemical and optical measurements provided evidence for strong electronic interactions between the Bodipy and ZnPc constituents in the ground state of 1. When conjugate 1 is Subjected to photoexcitation in the spectral region corresponding to the Bodipy absorption. the strong fluorescence characteristic of the latter subunit is effectively quenched (i.e., >= 97%). Excitation spectral analysis confirmed that the photoexcited Bodipy and the tethered ZnPc subunits interact and that intraconjugate singlet energy transfer Occurs with all efficiency of ca. 25%. Treatment Of conjugate 1 with N-pyridylfulleropyrrolidine (8). an electron-acceptor system containing it nitrogen ligand, gives rise to the novel electron donor-acceptor hybrid 1 <-> 8 through ligation to the ZnPc center. irradiation Of the resulting supramolecular ensemble within the visible range leads to it charge-separated Bodipy-ZnPc center dot+-C-60(center dot-) radical-ion-pair state, through it sequence of excited-state and charge transfers. characterized by it remarkably long lifetime of 39.9 ns in toluene.
机译：从酞菁醛4经由二吡咯甲烷3和二吡咯甲烷2合成了全色4,4-二氟4-硼-3a，4a-二氮杂-s-茚并茂-锌酞菁共轭物（Bodipy-ZnPc）1。在其中Bodipy单元拴在其酞菁核的周围位置。电化学和光学测量提供了在基态1下Bodipy和ZnPc成分之间强电子相互作用的证据。当缀合物1在对应于Bodipy吸收的光谱区域内受到光激发时。后一个亚基的强荧光特性被有效淬灭（即> = 97％）。激发光谱分析证实，光激发的Bodipy和束缚的ZnPc亚基相互作用，并且共轭单线态能量转移的发生效率约为200。 25％。用N-吡啶基全氟吡咯烷（8）处理缀合物1。包含氮配体的电子受体系统通过与ZnPc中心的连接产生了新型电子供体-受体杂化物1 8。在可见光范围内对所得的超分子集合体进行辐照会导致其电荷分离的Bodipy-ZnPc中心点+ -C-60（中心点-）自由基离子对状态，并通过其激发态和电荷转移的顺序进行。其特点是在甲苯中具有39.9 ns的超长使用寿命。

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