Highly crystallization-induced emissive luminophores with mechanoluminescent features for two-photon harvesting fluorescence imaging and latent fingerprint identification  

作　　者：Jian Lu Juan Gao Rui-Xuan Qian Shuai-Hua Wang Fa-Kun Zheng Guo-Cong Guo 

机构地区：[1]Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China,Fuzhou 350108,China [2]State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China

出　　处：《Nano Research》2024年第7期6475-6482,共8页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.22205237,22271283,21971240,and 21827813);the National Key Research and Development Program of China(No.2017YFA0206802);the Scientific Instrument Developing Project of the Chinese Academy of Sciences(No.YJKYYQ20210039).

摘　　要：Fluorescence imaging can be employed in fields of medical treatment,astronomical exploration,and national defense security.Traditional fluorescence imaging often takes the single-photon techniques,which is vulnerable to background interference and photobleaching.Remedially,two-photon fluorescence imaging can achieve much higher-resolution fluorescence imaging for reducing scattering and deeper depth.Hence,by assembling the tetraphenylethylene backbones with nontoxic and non-noble K^(+)ions,compound 1([(Hdma)K(H_(2)ettc)]_(n),H_(4)ettc=4',4''',4''''',4'''''''-(ethene-1,1,2,2-tetrayl)tetrakis(([1,1'-biphenyl]-4-carboxylic acid)))with the crystallization-induced emissions exhibited charming fluorescence imaging under two-photon excitation microscopy(TPEM).Besides,luminescent powders based on compound 1 can achieve high-resolution fingerprint recognition,providing secure access control and identification for a novel authentication method.Compared with the commercial fluorescent dyes coumarin-6,the as-synthesized compound 1 showed great solvent stability,indicating its durability against harsh environment.Moreover,compound 1 shows mechanoluminescent properties for the perturbation of weak supramolecular interactions within ordered arrangements of the H_(2)ettc^(2−)ligands.This novel compound has provided an important insight to the development of twophoton fluorescence imaging and advanced external-stimuli responsive materials.

关 键 词：crystallization-induced emission fluorescence imaging two-photon absorption fingerprint recognition MECHANOLUMINESCENCE 

分 类 号：O62[理学—有机化学]