首页|Luminescent terphen[3]arene sulfate-activated FRET assemblies for cell imaging
Luminescent terphen[3]arene sulfate-activated FRET assemblies for cell imaging
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Multicharged supramolecular assemblies based on luminescent macrocycle play an important role in extending their optical properties and functions.Herein,we reported macrocyclic supramolecular as-semblies based on luminescent terphen[3]arene sulfate(TP[3]AS)and tetraphenylethylene pyridinium(TPE-4Py)through electrostatic interactions,host-guest encapsulation and π-π stacking interactions.Förster resonance energy transfer(FRET)process from TP[3]AS to TPE-4Py was achieved with the en-ergy 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.
Luminescent macrocycleTerphen[3]arene sulfateMulticharged assemblyMultivalent interactionsFörster resonance energy transferCell imaging
Zhixue Liu、Haiqi Chen、Lijuan Guo、Xinyao Sun、Zhi-Yuan Zhang、Junyi Chen、Ming Dong、Chunju Li
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Tianjin Key Laboratory of Structure and Performance for Functional Molecules,College of Chemistry,Tianjin Normal University,Tianjin 300387,China
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