Luminescent terphen[3]arene sulfate-activated FRET assemblies for cell imaging  

作　　者：Zhixue Liu Haiqi Chen Lijuan Guo Xinyao Sun Zhi-Yuan Zhang Junyi Chen Ming Dong Chunju Li 

机构地区：[1]Tianjin Key Laboratory of Structure and Performance for Functional Molecules,College of Chemistry,Tianjin Normal University,Tianjin 300387,China

出　　处：《Chinese Chemical Letters》2024年第9期183-186,共4页中国化学快报（英文版）

基　　金：the National Natural Science Foundation of China(Nos.21971192,21807038);the Tianjin Municipal Education Commission(No.2021KJ188);the China Postdoctoral Science Foundation(No.2021T140343)。

摘　　要：Multicharged supramolecular assemblies based on luminescent macrocycle play an important role in extending their optical properties and functions.Herein,we reported macrocyclic supramolecular assemblies based on luminescent terphen[3]arene sulfate(TP[3]AS)and tetraphenylethylene pyridinium(TPE-4Py)through electrostatic interactions,host-guest encapsulation andπ-πstacking interactions.F?rster resonance energy transfer(FRET)process from TP[3]AS to TPE-4Py was achieved with the energy transfer efficiency of 99.9%,accompanied by TPE-4Py fluorescence emission bathochromic shifted of 15 nm and enhanced by 1.68 times in PBS solution.In contrast,other non-luminescent sulfato-β-cyclodextrin and sulfobutylether-β-cyclodextrin only can enhance the fluorescence intensity of TPE-4Py without bathochromic shift.Due to the strong fluorescence and good stability of TPE-4Py@TP[3]AS,it can be used for optical imaging in living cells,which provided an effective approach for the construction of assembling-confined luminescent biomaterials.

关 键 词：Luminescent macrocycle arene sulfate Multicharged assembly Multivalent interactions Forster resonance energy transfer Cell imaging 

分 类 号：O657.3[理学—分析化学] Q2-33[理学—化学]