Theoretical Evidence for the Distance-Dependent Photoinduced Electron Transfer of Porphyrin-Oligothiophene-Fullerene Triads
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چکیده
منابع مشابه
Photoinduced electron transfer in a b,b0-pyrrolic fused ferrocene–(zinc porphyrin)–fullerene
A donor–acceptor linked triad with a short spacer (Fc-ZnP-C60) 1 was designed and synthesised to attain the longest charge-separation lifetime, 630 ms, ever reported for triads at room temperature. The ferrocene electron donor and fullerene electron acceptor of triad 1 are attached to imidazole rings fused to opposite b,b0-pyrrolic positions of the zinc porphyrin. After excitation of the porphy...
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Two rotaxanes containing zinc porphyrin (ZnP) with crown ether and [60]fullerene (C(60)) with cationic and neutral axles are synthesized. Optimized structures calculated by molecular orbital methods indicate that the rotaxane with an ammonium cation in the center of the axle has a shorter distance between the C(60) and ZnP moieties than that of the rotaxane with a neutral axle because of acylat...
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Cationic zinc porphyrin, ZnTMAP4+, externally binds to calf thymus DNA or polynucleotides through electrostatic interactions in a self-stacked (for DNA or [poly(dA-dT)]2) or unstacked (for [poly(dG-dC)]2) form at low [porphyrin]/[base-pair] ratios. When ZnTMAP4+ in these conjugates was excited in the presence of a cationic electron acceptor, electron transfer (ET) occurred to produce the radica...
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Molecular electronics has been growing rapidly, to a point where the ambition is to miniaturize conventional electronic devices down to the single-molecule scale. One of the essential components of the future molecular circuits is miniaturized power sources. A few reports have addressed this key issue by using a single nanowire as a low-power source for nanoelectronics, such as a piezoelectric ...
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Single- and multiwalled carbon nanotubes have been covalently functionalized with free-base porphyrin. The quantity of porphyrin linked to the surface was determined from thermogravimetric and UV-vis analysis. A reversible protonation equilibrium between the attached porphyrin and the residual acid groups of the carbon nanotubes has been identified. Steady-state fluorescence emission spectrum o...
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ژورنال
عنوان ژورنال: International Journal of Photoenergy
سال: 2012
ISSN: 1110-662X,1687-529X
DOI: 10.1155/2012/314896