Fullerenes as Novel Acceptors in Photosynthetic Electron Transfer

Imahori, Hiroshi; Sakata, Yoshiteru

doi:10.1002/(sici)1099-0690(199910)1999:10<2445::aid-ejoc2445>3.0.co;2-g

Cited by 409 publications

(61 citation statements)

References 100 publications

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“…C 60 has been synthesized by many researchers and various characteristics have been studies. One of the most important characters is photophysical studies of systems in which C 60 behaves as an energy/electron acceptor in the ground or excited state [168] either in covalently linked dyads [169] or as heterogeneous blends [170,171] for the fabrication of photovoltaic devices [172,173]. Furthermore, C 60 was used to construct a single-layer organic LED [174].…”

Section: Fullerene-ferrocene Liquid Crystalline Polymersmentioning

confidence: 99%

Organometallic Ferrocene- and Phosphorus-Containing Polymers: Synthesis and Characterization

Hussein

Asiri

2012

Designed Monomers and Polymers

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The inclusion of organometallic units into polymeric structures has attracted much attention in different fields according to the nature and behaviour of the inserted metal. Moreover, the discovery of organometallic polymers and their structural characterization initiated an explosive rebirth of organometallic chemistry. Organometallic moieties are in or pendent to the polymer backbone and examine some of the uses of the emergent metallocene polymers, and new uses are still being found for these remarkable organometallic moieties. This review gives a simple introduction to variable organometallic molecules and their characteristics. This review will focus on the syntheses and characterization of organometallic polymers, including ferrocene-and phosphorus-containing polymers. A general overview on ferrocene polymers with a special attention to ferrocene-containing liquid crystalline polymers (including a ferrocene moiety in the main chain, side-chain or dendrimers) and fullerene-ferrocene liquid crystalline polymers is presented. In addition, more details for synthesis and properties of phosphorus-containing polymers are illustrated.

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Section: Fullerene-ferrocene Liquid Crystalline Polymersmentioning

confidence: 99%

Organometallic Ferrocene- and Phosphorus-Containing Polymers: Synthesis and Characterization

Hussein

Asiri

2012

Designed Monomers and Polymers

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“…A large number of molecular systems composed of donor (D) and acceptor (A) with a rigid spacer or a bridging element or composed of D and A as the separate constituents, which mimic the PIET in photosynthetic reaction center, have been designed and synthesized with the aim of the construction of an artificial PIET system equivalent to biological system. For the proper exploitation of such D-A systems, however, the elucidation of the kinetics and mechanisms of forward electron transfer as well as back electron transfer in the excited states is prerequisite [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Magnetic field effects on electro-photoluminescence of photoinduced electron transfer systems in a polymer film

Awasthi

Ohta

2011

Journal of Photochemistry and Photobiology A: Chemistry

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Magnetic field effects on photoluminescence (PL) in the presence of external electric fields have been examined for a variety of electron donor and acceptor pairs, either linked with methylene chain or randomly distributed in polymethyl methacrylate (PMMA) films, which show intermolecular photoinduced electron transfer (PIET). Application of electric fields changes the energy separation among different electronic states, because the electric dipole moment at the state under consideration is usually different from the others. The energy levels within the same spin multiplicity are also shifted or splitted by application of magnetic field. Then, simultaneous application of electric field and magnetic field induces interesting effects on PL which cannot be observed when only electric field or magnetic field is applied to molecules. In this article, experimental results of the magnetic field effect of the electric field effect both on LE fluorescence and on exciplex fluorescence resulting from PIET are presented, and the mechanism of the synergy effects of the electric and magnetic fields on PL are discussed. The hyperfine interaction of the various radical-ion pairs produced by PIET has been also determined on the basis of the synergy effects on PL, and the results are compared with the calculated values.

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“…[30][31][32][33] Later, carbon nanotubes (CNTs) became available, representing a transition from molecular species (fulleroids) to materials. Also, CNTs have been widely used for photon induced electron transfer [34] and optoelectronic applications, including photovoltaic cells.…”

Section: Graphene Oxide In Photobiocatalysismentioning

confidence: 99%

Photobiocatalysis: The Power of Combining Photocatalysis and Enzymes

Maciá-Agulló

Corma

Garcı́a

2015

Chemistry A European J

140

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Photobiocatalysts are constituted by a semiconductor with or without light harvester that activates an enzyme. A logical source of inspiration for the development of photobiocatalysts has been natural photosynthetic centers. In photobiocatalysis, the coupling of the semiconductor and the enzyme frequently requires of the natural cofactor and a relay transferring charge carriers from the semiconductor. The most widely studied photobiocatalysts so far make use of conduction band electrons of excited semiconductor to promote enzymatic reductions mediated by NAD + /NADH and an electron relay. The present review presents the state of the art in the field and has been organized based on the semiconductor and the reaction type including oxidations, hydrogen generation, CO 2 reduction. The possibility of direct enzyme activation by the semiconductor and the influence of the nature of mediator are also discussed as well as the use of mimics of enzyme active center in combination with the semiconductor. The final section summarizes the state of the art of photobiocatalysis and comments on our view on future developments of the field.

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Fullerenes as Novel Acceptors in Photosynthetic Electron Transfer

Cited by 409 publications

References 100 publications

Organometallic Ferrocene- and Phosphorus-Containing Polymers: Synthesis and Characterization

Organometallic Ferrocene- and Phosphorus-Containing Polymers: Synthesis and Characterization

Magnetic field effects on electro-photoluminescence of photoinduced electron transfer systems in a polymer film

Photobiocatalysis: The Power of Combining Photocatalysis and Enzymes

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