Facile reflux synthesis of polyethyleneimine-capped fluorescent carbon dots for sequential bioassays toward Cu2+/H2S and its application for a logic system
Facile reflux synthesis of polyethyleneimine-capped fluorescent carbon dots for sequential bioassays toward Cu2+/H2S and its application for a logic system
复制标题
用于 Cu2/H2S 连续生物测定的聚乙烯亚胺封端荧光碳点的简便回流合成及其在逻辑系统中的应用
DOI：
10.1002/bab.1739
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发表时间：
2019-05-01
影响因子：
2.8
通讯作者：
Zhang, Min
中科院分区：
文献类型：
--
作者：
Chen, Zi-Han;Han, Xin-Yue;Zhang, Min
In this work, we present a novel facile strategy for green synthesis of polyethyleneimine (PEI)-capped carbon dots (PEI-CDs), in which citric acid and PEI were chosen as reactants and highly fluorescent PEI-CDs could be readily obtained via a simple one-pot refluxing under 120 degrees C within 2 H. Fluorescence studies indicate that the as-prepared PEI-CDs exhibit strong fluorescence emission at 446 nm with excitation at 365 nm. Upon the sequential addition of Cu2+ and H2S, PEI-CDs result in an interesting "ON-OFF-ON" three-state emission responses, promising a bifunctional sensory platform. Moreover, the Cu2+/H2S-facilated reversible fluorescence changes of PEI-CDs have demonstrated the design of an INHIBIT logic system based on Boolean logic.
