C=N based PAMAM polymer dots: Fluorescent property and Cu2+ sensing application
C=N based PAMAM polymer dots: Fluorescent property and Cu2+ sensing application
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C=N 基 PAMAM 聚合物点：荧光特性和 Cu2 传感应用
DOI：
10.1016/j.colsurfa.2019.124112
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发表时间：
2020-01-20
影响因子：
5.2
通讯作者：
Dong, Biao
中科院分区：
文献类型：
--
作者：
Shi, Weiguang;Lu, Xiaoyi;Dong, Biao
以1.0 G PAMAM-NH2和DKG（氧化AA）为原料，通过水热法得到了绿光发光聚合物点（PDs），量子产率为18.7%。固有的强荧光源自亚胺和PAMAM-DKG的特殊结构，赋予所获得的PAMAM-DKG PD具有pH和温度响应特性，这可以为进一步开发这种含有不饱和结构的化合物的生物学和药物学方法提供新的视角。 PAMAM-DKG PDs的荧光通过交联过程中C=N键的形成而增强，当C=N键被破坏时，荧光转变成微弱的蓝色。此外，PAMAM-DKG PD 是一种潜在的荧光探针，可用于检测水介质中的 Cu2+。
A green emiting polymer dots (PDs) were obtained via a hydrothermal method from 1.0 G PAMAM-NH2 and DKG (oxidated AA), with a quantum yield of 18.7%. The intrinsic strong fluorescence originates from imines and the special structure of PAMAM-DKG, endowsing the obtained PAMAM-DKG PDs with pH- and temperature-responsive properties, which can provide a new perspective for further develop this approach in biology and pharmaceuticals with compounds containing unsaturated structure. The fluorescence of PAMAM-DKG PDs were enhanced by C=N bond formation with a crosslinking process, and the fluorescence tansformed into weak and blue when destruction of C=N bond occurred. In addition, PAMAM-DKG PDs is a potential fluorescence probe for Cu2+ detection in aqueous media.