Solvothermally Mediated Self-Assembly of Ultralong Peptide Nanobelts Capable of Optical Waveguiding

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• 作者：Yongxin Li ; Linyin Yan ; Kai Liu ; Juan Wang ; Anhe Wang ; Shuo Bai and Xuehai Yan
• 刊名：Small
• 出版年：2016
• 出版时间：May 18, 2016
• 年：2016
• 卷：12
• 期：19
• 页码：2575-2579
• 全文大小：926K
• ISSN：1613-6829

文摘

The formation of ultralong peptide crystalline nanobelts using a solvothermal approach from a di-phenylalanine gel within 10 min, where the self-assembly process is accelerated by several orders of magnitude compared with the month-long glutaraldehyde induction method previously reported, has been demonstrated. The solvothermal treatment can facilitate the phase separation of di-phenylalanine gels while speeding up the kinetics of the intramolecular cyclization reaction and concomitant crystallization. Moreover, the modulation effect of formaldehyde as an additive is revealed, and that a small amount of formaldehyde leads to thicker crystalline platelets capable of curved optical waveguiding that can potentially be applied in advanced bio-optical and optoelectronic devices, a rare feat with peptide-based crystals.