Fluorescent Gel from a Self-Assembling New Chromophoric Moiety Containing Azobenzene Based Tetraamide
IR@IICB: CSIR-Indian Institute of Chemical Biology, Kolkata
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Title |
Fluorescent Gel from a Self-Assembling New Chromophoric Moiety Containing Azobenzene Based Tetraamide
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Creator |
Palui, Goutam
Banerjee, Arindam |
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Subject |
Chemistry
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Description |
Discovery and developments of low molecular-weight organogelators (LMOG) are important due to their unique features1 and their potential applications in nanotechnology,2 pollution control,3 oil-spill recovery,4 and light-harvesting materials,5 in preparing dye sensitized solar cells,6 and in other uses.7 In order
to generate a gel-phase material it is necessary to select or construct a molecular building block that will provide a
supramolecular three-dimensional network using various noncovalent interactions including hydrogen bonds,8 π-π staking,9 metal coordination,10 and van der Waals interactions.11 A wide range of different types of organic molecules have been investigated as low molecular weight organogelators including saccharides,12 peptides,13 amides,14 ureas,15 nucleobase,16 steroid
derivatives17 and others.18 Many of these above-mentioned
organogelators self-assemble utilizing hydrogen bonds and/or
π-π interactions to form corresponding gels. Smith and his
co-workers are the pioneer of amino acid based dendritic
organogelator.19 Organogelators with π-conjugated molecular
structure have drawn a special attention due to their advantages for displaying various applications in increased charge transport, fluorescence and sensing capabilities.20 However, chromophorebased organogelators, particularly gels based on extended π-conjugated systems21,24 are relatively less in number. Weiss et al.22 and Desvergne et al.23 synthesized anthracene-containing gelators and examined their unique fluorescence properties. Ajoyghosh et al.21g–k synthesized π-conjugated-oligo (p-phenylenevinylene)
based gelators, which show unique fluorescent properties. Shinkai et al.24 also designed a triphenylene-based gels showing excimer emission arising from the unusual
π-electron overlapping mode of a triphenylene moiety. For all these gelator molecules, long alkyl chains, steroidal groups or trifluoromethyl substituents have been introduced into the gelator structure for attaining the effective gelation process.
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Date |
2008
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Type |
Article
PeerReviewed |
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Format |
application/pdf
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Identifier |
http://www.eprints.iicb.res.in/216/1/JOURNAL_OF_PHYSICAL_CHEMISTRY_B%2C112_%2C33%2C10107%2D10115%2C__2008[45].pdf
Palui, Goutam and Banerjee, Arindam (2008) Fluorescent Gel from a Self-Assembling New Chromophoric Moiety Containing Azobenzene Based Tetraamide. J. Phys. Chem, 112. pp. 10107-10115. |
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Relation |
http://dx.doi.org/10.1021/jp801657h
http://www.eprints.iicb.res.in/216/ |
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