Plasmon coupling-driven enhanced high-order multiphoton excited fluorescent performance of metal-organic frameworks  

作　　者：Tong Meng Bo Li Linlin Zeng Xianshun Sun Yupeng Tian Hongping Zhou Meng Zhou Dandan Li 

机构地区：[1]Institutes of Physical Science and Information Technology,Key Laboratory of Structure and Functional Regulation of Hybrid Materials,Ministry of Education,Anhui University,Hefei 230601,China [2]School of Chemistry and Chemical Engineering,Anhui University,Hefei 230601,China [3]Hefei National Research Center for Physical Sciences at the Microscale,University of Science and Technology of China,Hefei 230026,China

出　　处：《Nano Research》2024年第7期6502-6508,共7页纳米研究（英文版）

基　　金：supported by a grant for the National Natural Science Foundation of China(Nos.22171001 and 22305001);Natural Science Foundation of Anhui Province(No.2108085MB49);the Institutional Animal Care and Use Committee of Anhui University(serial number:2021-015)based on the National Standard of China GB/T35892-2018 guidelines for Ethical Review of Experimental Animal Welfare.

摘　　要：Accessing high-order multiphoton excited fluorescence(H-MPEF)materials is challenging yet and needs complicated synthesis procedures.In this study,we successfully assembled plasmonic Au nanorods(Au NRs)with multiphoton responsive metalorganic frameworks(MOFs),resulting in a significant several-fold enhancement of H-MPEF.The extent of multiphoton enhancement was found to be strongly dependent on the degree of overlap between the multiphoton excitation wavelength of MOFs and the localized surface plasmon resonance absorbance of Au NRs,indicating the importance of plasmon-induced resonance energy transfer.Besides,plasmon-induced hot electron transfer played a vital role in enhanced multiphoton activity as well.Notably,the optimum H-MPEF enhancement occurs at the second near-infrared(NIR-II)region,which provides a promising platform for fluorescent bioimaging.Our findings provide a feasible and practical method to fabricate optimized H-MPEF materials for biological imaging using tissue-penetrating NIR-II light.

关 键 词：metal-organic framework(MOF) plasmon resonance multiphoton activity fluorescence imaging 

分 类 号：O43[机械工程—光学工程]