Solid State NMR and Fluorescence Studies of Conjugated Polymer Nanocomposties  

作　　者：Chao Jun JING Liu Sheng CHEN Yi SHI Xi Gao JIN 

机构地区：[1]State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080 [2]Graduate School of the Chinese Academy of Sciences, Beijing 100080

出　　处：《Chinese Chemical Letters》2005年第11期1519-1522,共4页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.20023003).

摘　　要：^13C spin-lattice relaxation times （T1） of a conjugated polymer MEH-PPV in polymer/ layered silicate nanocomposites together with the steady state fluorescence emission and transient fluorescence decay measurements have been investigated. The T1 values of the conjugated carbons decrease dramatically according to the reduction of polymer concentration in the nano composites, while the fluorescence life times （τ） show a linear prolonging tendency. The results are explained from the point of view of molecular dynamics.^13C spin-lattice relaxation times （T1） of a conjugated polymer MEH-PPV in polymer/ layered silicate nanocomposites together with the steady state fluorescence emission and transient fluorescence decay measurements have been investigated. The T1 values of the conjugated carbons decrease dramatically according to the reduction of polymer concentration in the nano composites, while the fluorescence life times （τ） show a linear prolonging tendency. The results are explained from the point of view of molecular dynamics.

关 键 词：Conjugated polymer NANOCOMPOSITES FLUORESCENCE solid state ^13C NMR 

分 类 号：TB383[一般工业技术—材料科学与工程] TB33