Chirality-Discriminated Conductivity of Metal-Amino Acid Biocoordination Polymer Nanowires
Chirality-Discriminated Conductivity of Metal-Amino Acid Biocoordination Polymer Nanowires
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金属-氨基酸生物配位聚合物纳米线的手性判别电导率
DOI：
10.1021/acsnano.6b03833
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发表时间：
2016
期刊：
影响因子：
17.1
通讯作者：
Tang Zhiyong
中科院分区：
文献类型：
--
作者：
Zheng Jianzhong;Wu Yijin;Deng Ke;He Meng;He Liangcan;Cao Jing;Zhang Xugang;Liu Yaling;Li Shunxing;Tang Zhiyong
通过手性半胱氨酸氨基酸与镉离子在溶液中的自组装，成功构建了生物配位聚合物(BCP)纳米线。考察了半胱氨酸的不同手性，揭示了BCP纳米线在形态和结构上的差异。更有趣和令人惊讶的是，电学性质测量表明，尽管所有Cd(II)/半胱氨酸BCP纳米线都具有半导体性质，但Cd(II)/dl-半胱氨酸纳米线的电导率是Cd(II)/L-半胱氨酸或Cd(II)/d-半胱氨酸纳米线的4倍。通过理论计算进一步阐明了BCP纳米线中手性识别特征的起源。这些发现表明，BCP纳米结构的形态、结构和性质可以通过桥联配体的手性来调节，这将有助于理解手性转录以及构建手性调控的功能材料。
Biocoordination polymer (BCP) nanowires are successfully constructed through self-assembly of chiral cysteine amino acids and Cd cations in solution. The varied chirality of cysteine is explored to demonstrate the difference of BCP nanowires in both morphology and structure. More interestingly and surprisingly, the electrical property measurement reveals that, although all Cd(II)/cysteine BCP nanowires behave as semiconductors, the conductivity of the Cd(II)/dl-cysteine nanowires is 4 times higher than that of the Cd(II)/l-cysteine or Cd(II)/d-cysteine ones. The origin of such chirality-discriminated characteristics registered in BCP nanowires is further elucidated by theoretical calculation. These findings demonstrate that the morphology, structure, and property of BCP nanostructures could be tuned by the chirality of the bridging ligands, which will shed light on the comprehension of chirality transcription as well as construction of chirality-regulated functional materials.