Geng Tong-Mou, Li Deng-Kun, Zhu Zong-Ming, Zhang Wei-Yong, Ye Sai-Nan, Zhu Hai, Wang Zhu-Qing
AnHui Province Key Laboratory of Optoelectronic and Magnetism Functional Materials, Key Laboratory of Functional Coordination Compounds of Anhui Higher Education Institutes, School of Chemistry and Chemical Engineering, Anqing Normal University, Anqing 246011, PR China.
AnHui Province Key Laboratory of Optoelectronic and Magnetism Functional Materials, Key Laboratory of Functional Coordination Compounds of Anhui Higher Education Institutes, School of Chemistry and Chemical Engineering, Anqing Normal University, Anqing 246011, PR China.
Anal Chim Acta. 2018 Jun 29;1011:77-85. doi: 10.1016/j.aca.2018.01.002. Epub 2018 Jan 30.
A novel conjugated microporous polymer based on perylene tetraanhydride bisimide (DPA) has been synthesized through Sonogashira-Hagihara cross-coupling polymerization of tetrabromo-substituted perylene tetraanhydride bisimide derivative (DPBrABr) with 1,4-diethynylbenzene, whose Brunauer-Emmett-Teller (BET) specific surface area is about 378 m g. The fluorescence quenching behaviors of the DPA were investigated. It is found that the DPA shows high sensitivity and selectivity to tracing o-nitrophenol (o-NP) in THF with Ks constant of 2.00 × 10 L mol. The detection limit (LOD) is 1.50 × 10 mol L. The possible sensing mechanism for the luminescent quenching of DPA towards o-NP exciting at 365 nm was considered the donor-acceptor electron transfer mechanism, which is a combined result from both dynamic (collisional) and static quenching. Moreover, the static quenching process is dominant for DPA.
通过四溴代苝四酸二酐双酰亚胺衍生物（DPBrABr）与1,4-二乙炔基苯的Sonogashira-Hagihara交叉偶联聚合反应，合成了一种基于苝四酸二酐双酰亚胺（DPA）的新型共轭微孔聚合物，其Brunauer-Emmett-Teller（BET）比表面积约为378 m²/g。研究了DPA的荧光猝灭行为。结果发现，DPA对四氢呋喃中痕量邻硝基苯酚（o-NP）具有高灵敏度和选择性，Ks常数为2.00×10⁴ L/mol。检测限（LOD）为1.50×10⁻⁷ mol/L。DPA在365 nm激发下对o-NP发光猝灭的可能传感机制被认为是供体-受体电子转移机制，这是动态（碰撞）猝灭和静态猝灭共同作用的结果。此外，静态猝灭过程对DPA起主导作用。
