Conformation effect of oligosilane linker on photoinduced electron transfer of tetrasilane-linked zinc porphyrin–[60]fullerene dyads

Shibano, Yuji; Sasaki, Michiko; Tsuji, Hayato; Araki, Yasuyuki; Ito, Osamu; Tamao, Kohei

doi:10.1016/j.jorganchem.2006.05.062

Cited by 35 publications

(26 citation statements)

References 65 publications

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“…Two conformationally constrained porphyrin-C 60 -linked tetrasilanes (syn: 9b, anti: 9c) have been prepared for comparison with the conformationally free 9a. 46 The conformational effects of the tetrasilane linker on the photoinduced electron transfer was studied using time-resolved fluorescence and absorption measurements. The study of poly(di-n-hexylsilane) embedded in nanoporous silica (pore size = 10 nm) using photoluminescence and photoluminescence excitation spectroscopies revealed three bands.…”

Section: ð3þmentioning

confidence: 99%

Inorganic and organometallic polymers

Noonan

Gates

2008

Annu. Rep. Prog. Chem., Sect. A: Inorg. Chem.

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Polymers composed partially or entirely of inorganic elements in the main chain possess unique structures, properties and applications. This report summarizes the developments in the synthesis and study of macromolecules which incorporate main group and transition elements in the polymer backbone. HighlightsMajor accomplishments in the synthesis of inorganic polymers reported in 2007 include: the use of self-assembly to chemically micropattern polysiloxanes, the synthesis of p-conjugated oligomeric models for poly(phenylenedisilene), the preparation of novel polythiophenes bearing borane substituents, the isolation of cyclic ferrocenophane macromolecules, the ''living'' growth of micelles from ferrocenylsilane block copolymers, and the observation of novel electron transfer and conductive properties of zinc-porphyrin polymers.

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Section: ð3þmentioning

confidence: 99%

Inorganic and organometallic polymers

Noonan

Gates

2008

Annu. Rep. Prog. Chem., Sect. A: Inorg. Chem.

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“…[1, 10,11] Owing to the 3D structure of C 60 , its relatively low reduction potential, and its high symmetry, C 60 features small reorganization energies in electron-transfer reactions. [12] This property renders C 60 useful as a building block in artificial-light-harvesting and energy-conversion systems.…”

Section: Introductionmentioning

confidence: 99%

Porphyrin–Phthalocyanine/Pyridylfullerene Supramolecular Assemblies

Pereira

Hausmann

Tomé

et al. 2012

Chemistry A European J

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The synthesis and photophysical properties of several porphyrin (P)-phthalocyanine (Pc) conjugates (P-Pc; 1-3) are described, in which the phthalocyanines are directly linked to the β-pyrrolic position of a meso-tetraphenylporphyrin. Photoinduced energy- and electron-transfer processes were studied through the preparation of H(2)P-ZnPc, ZnP-ZnPc, and PdP-ZnPc conjugates, and their assembly through metal coordination with two different pyridylfulleropyrrolidines (4 and 5). The resulting electron-donor-acceptor hybrids, which were formed by axial coordination of compounds 4 and 5 with the corresponding phthalocyanines, mimicked the fundamental processes of photosynthesis; that is, light harvesting, the transduction of excited-state energy, and unidirectional electron transfer. In particular, photophysical studies confirmed that intramolecular energy-transfer resulted from the S(2) excited state as well as from the S(1) excited state of the porphyrins to the energetically lower-lying phthalocyanines, followed by an intramolecular charge-transfer to yield P-Pc(.+)⋅C(60)(.-). This unique sequence of processes opens the way for solar-energy-conversion processes.

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“…1,2 为了揭示这一过程的微观机制, 人们合成以卟啉(Por)和醌类衍生物(Q)连成的卟啉-醌(Por-Q)作为模型化合物, 研究其分子内光诱导电子传递(PET)过程, 系统研究空间距离、方位、能量、介质等因素对 PET 速率的影响, 成为光合作用模拟的重要课题. [3][4][5][6][7] 与醌类其它化合物相比, 蒽醌分子具有共轭体 Fig.4 Fluorescence decay profile for dyads 1, 2, 3…”

Section: 引言unclassified

Spectral Research into Intramolecular Photoinduced Electron Transfer of Porphyrin-Anthraquinone Hybrids

Ping¹,

Xu²,

Ma³

2011

Acta Physico-Chimica Sinica

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A series of covalently linked porphyrin (Por)-anthraquinone (AQ) hybrids Por-Cn-AQ (n=1, 4, 10) with flexible different length carbon chains were synthesized and their intramolecular photoinduced electron transfer (PET) properties were investigated mainly by steady-state fluorescence and decayed luminescence spectra. We studied the PET mechanism using density functional theory (DFT). We found that PET occurs from the porphyrin moiety to the anthraquinone moiety of these dyads and that the PET efficiency is influenced considerably by the length of the linkage between the two moieties in the hybrids. From both the experimental and theoretical results, we can conclude that the PET of these dyads is seemingly most compatible with a"through-bond"(super-exchange) mechanism.

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Conformation effect of oligosilane linker on photoinduced electron transfer of tetrasilane-linked zinc porphyrin–[60]fullerene dyads

Cited by 35 publications

References 65 publications

Inorganic and organometallic polymers

Inorganic and organometallic polymers

Porphyrin–Phthalocyanine/Pyridylfullerene Supramolecular Assemblies

Spectral Research into Intramolecular Photoinduced Electron Transfer of Porphyrin-Anthraquinone Hybrids

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