Excellent Multiphoton Excitation Fluorescence with Large Multiphoton Absorption Cross Sections of Arginine-Modified Gold Nanoclusters for Bioimaging
Zhongran Wei, Yatao Pan, Guangjing Hou, Xia Ran, Zhen Chi, Yulu He, Yanmin Kuang, Xiaojuan Wang, Renming Liu, Lijun Guo
Abstract
, respectively, much higher than those of conventional organic compounds and previously reported Au NCs. Moreover, Arg/ATT-Au NCs have been successfully applied in two-photon and three-photon excitation fluorescence imaging of living cells with NIR excitation. The manifold advantages of small size, high quantum yield, suppressed blinking, good photostability and cytocompatibility, large MPA cross sections, and excellent MPE fluorescence imaging performances make fluorescent Arg/ATT-Au NCs a great candidate of imaging probes with vis-NIR excitation.
Topics & Concepts
FluorescenceNanoclustersMaterials scienceAbsorption (acoustics)Absorption cross sectionTwo-photon excitation microscopyRelaxation (psychology)Quantum yieldExcitationFluorescence-lifetime imaging microscopyExcited stateTwo-photon absorptionPhotochemistryAnalytical Chemistry (journal)Atomic physicsOpticsChemistryNanotechnologyCross section (physics)LaserPhysicsPsychologyQuantum mechanicsSocial psychologyChromatographyComposite materialNanocluster Synthesis and ApplicationsGold and Silver Nanoparticles Synthesis and ApplicationsNeurological Complications and Syndromes