Hydrogen bonding-induced oxygen clusters and long-lived room temperature phosphorescence from amorphous polyols  

作　　者：Ya-Ling Wang Kang Chen Hai-Ru Li Bo Chu Zishan Yan Hao-Ke Zhang Bin Liu Shengliang Hu Yongzhen Yang 

机构地区：[1]School of Energy and Power Engineering,North University of China,Taiyuan 030051,China [2]MOE Key Laboratory of Interface Science and Engineering in Advanced Materials,Taiyuan University of Technology,Taiyuan 030024,China [3]Department of Polymer Science and Engineering,MOE Key Laboratory of Macromolecular Synthesis and Functionalization,Zhejiang University,Hangzhou 310027,China [4]Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering,Taiyuan 030032,China

出　　处：《Chinese Chemical Letters》2023年第1期187-191,共5页中国化学快报（英文版）

基　　金：the financial support of the National Natural Science Foundation of China(No.52003254);the Shanxi Scholarship Council of China(No.2020–051);the Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering(No.2021SX-TD012);the Foundational Research Project of Shanxi Province(Nos.20210302123164,201901D211282,201901D211283);the Science Foundation of North University of China(No.XJJ201925);the MOE Key Laboratory of Macromolecular Synthesis and Functionalization,Zhejiang University(No.2021MSF01)。

摘　　要：Developing non-conjugated luminescent polymers(NCLPs)with fluorescence and long-lived roomtemperature phosphorescence is of great significance for revealing the essence of NCLPs luminescence,which has gradually attracted the attention of researchers in recent years.Herein,polymethylol(PMO)and poly(3-butene-1,2-diol)(PBD)with polyhydroxy structures were prepared and their luminescence behaviors were investigated to reveal the clusteroluminescence(CL)mechanism.Compared with polyvinyl alcohol with non-luminescent behavior,PMO and PBD exhibit cyan-blue fluorescence with quantum yields of ca.12%and green room-temperature phosphorescence with lifetimes of ca.89 ms in the solid state.Both fluorescence and phosphorescence exhibit typical excitation-dependent CL behavior.Experimental and theoretical analyses show that the strong hydrogen-bonding interaction of PMO and PBD greatly promotes the formation of oxygen clusters and the through-space n-n interaction of oxygen atoms,enabling fluorescence and phosphorescence emission.Our results have enormous implications for understanding the CL mechanism of NCLPs and provide a new polymer design strategy for the rational design of novel NCLPs materials.

关 键 词：Clusteroluminescence Through-space interactions Polymethylol Poly(3-butene-1 2-diol) Hydrogen bonding POLYMERIZATION 

分 类 号：TB34[一般工业技术—材料科学与工程]