Donor‐Linked Fullerenes: Photoinduced electron transfer and its potential application

Imahori, Hiroshi; Sakata, Yoshiteru

doi:10.1002/adma.19970090704

Cited by 612 publications

(274 citation statements)

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“…The recent those of common acceptors with smaller size such as progress in the chemistry of C [4] allows the preparation benzoquinone. Actually, accelerated charge separation and 60 of many fullerene derivatives covalently bound to donor decelerated charge recombination has been observed in a moieties [5,6]. These systems provide entry into intrafullerene-based acceptor-donor system when compared to molecular processes such as energy and electron transfer the equivalent benzoquinone-based system [26].…”

Section: Pergamonmentioning

confidence: 99%

Synthesis and electronic properties of donor-linked fullerenes

Nierengarten

Eckert

Felder

et al. 2000

Carbon

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Synthesis and electronic properties of donor-linked fullerenes towards photochemical molecular devices Nierengarten, J.F.; Eckert, J.F.; Felder, D.; Nicoud, J.F.; Armaroli, N.; Marconi, G.; Vicinelli, V.; Boudon, C.; Gisselbrecht, J.P.; Gross, M. Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum. AbstractWe report our recent progress in the synthesis and the study of donor-linked fullerenes. The synthesis of C polyadducts 60 with well defined three-dimensional structure provides versatile building blocks for the preparation of porphyrin-fullerene derivatives with unusual stereochemical and electronic properties. Phenanthroline ligands substituted with fullerenefunctionalized dendritic wedges and their copper(I) complexes have been prepared. Electrochemical and photophysical investigations have shown that the bis(phenanthroline)copper(I) central core is somehow buried in a dendritic black box. Finally, fullerene-oligophenylenevinylene hybrids have been synthesised in order to provide a molecular approach to photovoltaic conversion, and to prevent the morphology problems resulting from the phase separation in donor-acceptor composites.

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Section: Pergamonmentioning

confidence: 99%

Synthesis and electronic properties of donor-linked fullerenes

Nierengarten

Eckert

Felder

et al. 2000

Carbon

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“…The search for prompted us to investigate fullerene-containing thermotropic liquid crystals has been investigated [175][176][177][178] as an important behaviour for fullerene-based materials. The development of multifunctional new materials was achieved by the combination of the fullerene and ferrocene units within the same liquid crystalline molecular framework [136,179]. These structures represent an important new step in organometallic chemistry.…”

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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“…28, 29 Marcus theory 30,31 predicts that small values of λ will shift the back ET into the so-called Marcus inverted region, where higher values of the exergonic free energy for back ET are accompanied by slower rates for the process, as is the case in natural photosynthesis. 2,[32][33][34] It is well established that long lived CSS are observed for a large variety of materials, in which C 60 is the electron acceptor in electron donor-acceptor systems, in which porphyrins, phthalocyanines and other electron donors are linked either covalently 35 or mechanically [20][21][22][23][24][25][26] to C 60 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and photophysical properties of new catenated electron donor–acceptor materials with magnesium and free base porphyrins as donors and C₆₀as the acceptor

et al. 2015

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A new series of nanoscale electron donor-acceptor systems with [2]catenane architectures has been synthesized, incorporating magnesium porphyrin (MgP) or free base porphyrin (H 2 P) as electron donor and C 60 as electron acceptor, surrounding a central tetrahedral Cu(I)-1,10-phenanthroline ( phen) complex.Model catenated compounds incorporating only one or none of these photoactive moieties were also prepared. The synthesis involved the use of Sauvage's metal template protocol in combination with the 1,3-dipolar cycloaddition of azides and alkynes ("click chemistry"), as in other recent reports from our laboratories. Ground state electron interactions between the individual constituents was probed using electrochemistry and UV-vis absorption spectroscopy, while events occurring following photoexcitation in tetrahydrofuran (under both aerobic and anaerobic conditions) at various wavelengths were followed by means of time-resolved transient absorption and emission spectroscopies on the femtosecond and nanosecond time scales, respectively, complemented by measurements of quantum yields for generation of singlet oxygen. From similar studies with model catenates containing one or neither of the chromophores, the events following photoexcitation could be elucidated. The results were compared with those previously reported for analogous catenates based on zinc porphyrin (ZnP). It was determined that a series of energy transfer (EnT) and electron transfer (ET) processes take place in the present catenates, ultimately generating long-distance charge separated (CS) states involving oxidized porphyrin and reduced C 60 moieties, with lifetimes ranging from 400 to 1060 nanoseconds. Shorter lived short-distance CS states possessing oxidized copper complexes and reduced C 60 , with lifetimes ranging from 15 to 60 ns, were formed en route to the long-distance CS states. The dynamics of the ET processes were analyzed in terms of their thermodynamic driving forces. It was clear that intramolecular back ET was occurring in the inverted region of the Marcus parabola correlating rates and driving forces for electron transfer processes. In addition, evidence for triplet excited states as a product of either incomplete ET or back ET was found. The differences in behavior of the three catenates upon photoexcitation are analyzed in terms of the energy levels of the various intermediate states and the driving forces for EnT and ET processes.

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Donor‐Linked Fullerenes: Photoinduced electron transfer and its potential application

Cited by 612 publications

References 133 publications

Synthesis and electronic properties of donor-linked fullerenes

Synthesis and electronic properties of donor-linked fullerenes

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

Synthesis and photophysical properties of new catenated electron donor–acceptor materials with magnesium and free base porphyrins as donors and C₆₀as the acceptor

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Donor‐Linked Fullerenes: Photoinduced electron transfer and its potential application

Cited by 612 publications

References 133 publications

Synthesis and electronic properties of donor-linked fullerenes

Synthesis and electronic properties of donor-linked fullerenes

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

Synthesis and photophysical properties of new catenated electron donor–acceptor materials with magnesium and free base porphyrins as donors and C60as the acceptor

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Product

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Synthesis and photophysical properties of new catenated electron donor–acceptor materials with magnesium and free base porphyrins as donors and C₆₀as the acceptor