手性(物理)
葡萄糖氧化酶
不对称碳
材料科学
生物传感器
对映体
氨基酸
聚合
表面改性
化学工程
碳纤维
化学
有机化学
聚合物
纳米技术
手征对称破缺
光学活性
复合材料
工程类
物理
复合数
量子力学
生物化学
Nambu–Jona Lasinio模型
夸克
作者
Mengling Zhang,Yurong Ma,Huibo Wang,Bo Wang,Yunjie Zhou,Yang Liu,Mingwang Shao,Hui Huang,Fang Lü,Zhenhui Kang
标识
DOI:10.1021/acsami.0c21949
摘要
Chiral carbon dots (CDs) integrated the advantages of achiral CDs and the unique chiral property, which expand the prospect of the biological applications of CDs. However, the structure control and the origin of chirality for chiral CDs remain unclear. Herein, chiral CDs were obtained by thermal polymerization of chiral amino acids and citric acid, and their handedness of chirality could be controlled by adjusting the reaction temperature, which leads to different kinds of surface modifications. With aliphatic amino acids as a chiral source, all of the CDs that reacted at different temperatures (90–200 °C) have the same handedness of the chiral source. But with aromatic amino acids as a chiral source, CDs with maintained or inversed handedness compared with the chiral source could be obtained by adjusting the reaction temperature. Below a temperature of 120 °C, the chiral source was modified with CDs by esterification and transferred the handedness of chirality; at high temperatures (above 150 °C), which mainly connected by amidation accompanying with the formation of rigid structure generated by the π conjugation between the aromatic nucleus of chiral source and the carbon core of CDs, caused the inversing of the chiral signal. Further, we investigated the chiral effects of CDs on the glucose oxidase activity for a highly sensitive electrochemical biosensor.
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