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Unusual photopolymerization behavior of amino Acid-derived polydiacetylene supramolecules.
MedLine Citation:
PMID:  21706558     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
UV-irradiation of aqueous suspensions of amino acid-derived amphiphilic diacetylene supramolecules promotes a process that involves initial formation of species that absorb at 640 nm followed by the generation of polymers that have longer wavelength (686 nm) absorbance. The initially formed intermediate polydiacetylenes display substantial colorimetric reversibility while the long wavelength absorbing polymers show irreversible thermochromism during heating and cooling cycles. The long wavelength absorbing polydiacetylenes, formed from amino acid-derived amphiphilic diacetylene supramolecules, are suggested to have more planer backbone structures that allow more efficient overlap of the conjugated p-orbitals.
Authors:
Jaewon Yoon; Kamalrul Azlan Bin Azizan; Hyun Oh Yoo; Shuji Okada; Jong-Man Kim
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Publication Detail:
Type:  Journal Article     Date:  2009-04-21
Journal Detail:
Title:  Macromolecular rapid communications     Volume:  30     ISSN:  1022-1336     ISO Abbreviation:  Macromol Rapid Commun     Publication Date:  2009 Jun 
Date Detail:
Created Date:  2011-06-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9888239     Medline TA:  Macromol Rapid Commun     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  981-5     Citation Subset:  -    
Copyright Information:
Copyright © 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Affiliation:
Department of Chemical Engineering, Hanyang University, Seoul 133-791, Korea.
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