Visible‐Light‐Harvesting Organogel Composed of Cholesterol‐Based Perylene Derivatives

Sugiyasu, Kazunori; Fujita, Norifumi; Shinkai, Seiji

doi:10.1002/anie.200352458

Cited by 437 publications

(172 citation statements)

References 70 publications

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“…29 Perylene derivatives absorb a wide range of visible light energy depending on their substituents. When gels were formed from a mixture of two or more different perylene derivatives and irradiated, an energy gradient was established in which the excitation energy of one derivative was passed on to the other, and then to the next one, in a stepwise manner.…”

Section: Light Harvestingmentioning

confidence: 99%

Supramolecular Gels: Functions and Uses

2005

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In recent years there has been immense interest in studying gels derived from low molecular mass gelators (supramolecular, or simply molecular gels). The motivation for this is not only to understand the fundamental aggregate structures in the gels at different length scales, but also to explore their potential for futuristic technological applications. Gels have been made sensitive to external stimuli like light and chemical entities by incorporating a spectroscopically active or a receptor unit as part of the gelator molecule. This makes them suitable for applications such as sensing and actuating. The diversity of gel structural architectures has allowed them to be utilized as templates to prepare novel inorganic superstructures for possible applications in catalysis and separation. Gels derived from liquid crystals (anisotropy gels) that can act as dynamically functional materials have been prepared, for example, for (re-writable) information recording. Supramolecular gels can be important in controlled release applications, in oil recovery, for gelling cryogenic fuels etc. They can also serve as media for a range of applications. This tutorial review highlights some of the instructive work done by various groups to develop smart and functional gels, and covers a wide spectrum of scientific interest ranging from medicine to materials science.

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Section: Light Harvestingmentioning

confidence: 99%

Supramolecular Gels: Functions and Uses

2005

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“…In a recent Communication in Angewandte Chemie he reported a light-harvesting organogel composed of cholesterol-based perylene derivatives. [4] Shinkai has been a member of the International Advisory Board of Angewandte Chemie since 2000. …”

Section: T Osaka: Electrochemistrymentioning

confidence: 99%

Chemical Society of Japan Awards

2004

Angew Chem Int Ed

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“…[9][10][11][12][13] Therefore much research has been conducted in this field to illustrate photoinduced processes in p-p stacking, hydrogen bonding or gel systems. [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] Porphyrin and perylene tetracarboxylic diimide (PDI) have been frequently employed in building photoactive systems recently because both photoinduced electron transfer and energy transfer between them are theoretically possible. [31][32][33][34][35][36][37][38][39][40] Moreover, the photophysical properties of these two chromophores are well-documented and easily characterized.…”

Section: Introductionmentioning

confidence: 99%

Photoinduced Electron and Energy Transfer in Dyads of Porphyrin Dimer and Perylene Tetracarboxylic Diimide

Chen

Wang

et al. 2008

ChemPhysChem

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Two compounds containing a porphyrin dimer and a perylene tetracarboxylic diimide (PDI) linked by phenyl (1) or ethylene groups (2) are prepared. The photophysical properties of these two compounds are investigated by steady state electronic absorption and fluorescence spectra and lifetime measurements. The ground state absorption spectra reveal intense interactions between the porphyrin units within the porphyrin dimer, but no interactions between the porphyirn dimer and PDI. The fluorescence spectra suggest efficient energy transfer from PDI to porphyrin accompanied by less efficient electron transfer from porphyrin to PDI. The energy transfer is not affected by the dimeric structure of porphyrin or the linkage between the porphyrin dimer and PDI. However, the electron transfer from porphyrin to PDI is significantly affected by either the linkage between the donor and the acceptor or the polarity of the solvents. The dimeric structure of the porphyrin units in these compounds significantly promotes electron transfer in nonpolar, but not in polar solvents.

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Visible‐Light‐Harvesting Organogel Composed of Cholesterol‐Based Perylene Derivatives

Cited by 437 publications

References 70 publications

Supramolecular Gels: Functions and Uses

Supramolecular Gels: Functions and Uses

Chemical Society of Japan Awards

Photoinduced Electron and Energy Transfer in Dyads of Porphyrin Dimer and Perylene Tetracarboxylic Diimide

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