Journal
TETRAHEDRON LETTERS
Volume 51, Issue 40, Pages 5336-5340Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2010.08.012
Keywords
Dendron; Gel; Amino acids; Energy transfer; Light-harvesting
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Funding
- National Natural Science Foundation of China [20974004]
- 973 Program of China [2011CB933300]
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The gels and co-gels from glycine (Gly) and glutamic acid (Glu)-based dendrons with either tyrosine (Tyr) or tryptophan (Trp), two of the luminescent amino acid residues in natural proteins, at the focal point were prepared (Tyr-AB(4) and Trp-AB(4)). It was found that such gels, especially the co-gels from Tyr-AB(4)/Trp-AB(4), showed a high efficient energy transfer (ET) and light-harvesting behaviors. Moreover, luminescent gels with tunable emission ranging from blue to green were also observed owing to the cascade intra- and intermolecular ET from dendritic gelators to the guest molecules (PDNS) in the host-guest gel sample (co-gel with PDNS as the guest molecule), which mimicked the natural light-harvesting systems. (C) 2010 Elsevier Ltd. All rights reserved.
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