Continuous intra- and intermolecular energy transfer in light-harvesting gels from natural amino acids-based dendrons
✍ Scribed by Wu-Song Li; Ming-Jun Teng; Xin-Ru Jia; Yen Wei
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- French
- Weight
- 672 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
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 intraand 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.