期刊
ADVANCED FUNCTIONAL MATERIALS
卷 30, 期 10, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201909614
关键词
aromatic cyclodipeptides; bioinspired LEDs; metal ion doping; supramolecular fluorescence; very initial oligomerization
类别
资金
- European Research Council under the European Union Horizon 2020 research and innovation program [694426]
- Joint NSFC-ISF Grant [3145/19]
- National Natural Science Foundation of China [11874189]
- Texas A&M University Graduate Diversity Fellowship from the TAMU Office of Graduate and Professional Studies
- Artie McFerrin Department of Chemical Engineering at Texas AM University
The self-assembly of cyclodipeptides composed of natural aromatic amino acids into supramolecular structures of diverse morphologies with intrinsic emissions in the visible light region is demonstrated. The assembly process can be halted at the initial oligomerization by coordination with zinc ions, with the most prominent effect observed for cyclo-dihistidine (cyclo-HH). This process is mediated by attracting and pulling of the metal ions from the solvent into the peptide environment, rather than by direct interaction in the solvent as commonly accepted, thus forming an environment-switching doping mechanism. The doping induces a change of cyclo-HH molecular configurations and leads to the formation of pseudo core/shell clusters, comprising peptides and zinc ions organized in ordered conformations partially surrounded by relatively amorphous layers, thus significantly enhancing the emissions and allowing the application of the assemblies for ecofriendly color-converted light emitting diodes. These findings shed light into the very initial coordination procedure and elucidate an alternative mechanism of metal ions doping on biomolecules, thus presenting a promising avenue for integration of the bioorganic world and the optoelectronic field.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据