Fluorescent and thermal properties of siloxane-polyurethanes based on 1,8-naphthalimide  

作　　者：Yan Ma Qian-Yun Tang Ji Zhu Li-Hong Wang Cheng Yao 

机构地区：[1]School of Science,Nanjing University of Technology

出　　处：《Chinese Chemical Letters》2014年第5期680-686,共7页中国化学快报（英文版）

基　　金：Financial support from the 863 program (No. 2011AA02A204)

摘　　要：A series of fluorescent siloxane-polyurethanes（HPMS-PUs） containing an amino-functionalized,1 8-naphthalimide,fluorescent monomer（AABD） as a chain extender were synthesized.The properties of the HPMS-PUs were investigated by UV–vis and fluorescence spectroscopies,thermogravimetric analysis and thermal migration behavior.The maximum absorption and emission wavelengths of HPMS-PUs showed a red shift of about 4 nm and a blue shift of about 9 nm,respectively,compared to those of AABD.The Stokes shifts of AABD and HPMS-PU2 were 3514 and 2931 cm 1,respectively.The quantum yield of HPMS-PU2 was 0.79,which was six times higher than that of AABD.Concentration self-quenching was observed in both AABD and HPMS-PUs.The fluorescence of HPMS-PUs was quite stable with respect to both temperature and fluorescence quencher effects.The thermal stability of HPMS-PUs increased with AABD content.The fluorophore units in the HPMS-PUs did not readily migrate.A series of fluorescent siloxane-polyurethanes（HPMS-PUs） containing an amino-functionalized,1 8-naphthalimide,fluorescent monomer（AABD） as a chain extender were synthesized.The properties of the HPMS-PUs were investigated by UV–vis and fluorescence spectroscopies,thermogravimetric analysis and thermal migration behavior.The maximum absorption and emission wavelengths of HPMS-PUs showed a red shift of about 4 nm and a blue shift of about 9 nm,respectively,compared to those of AABD.The Stokes shifts of AABD and HPMS-PU2 were 3514 and 2931 cm 1,respectively.The quantum yield of HPMS-PU2 was 0.79,which was six times higher than that of AABD.Concentration self-quenching was observed in both AABD and HPMS-PUs.The fluorescence of HPMS-PUs was quite stable with respect to both temperature and fluorescence quencher effects.The thermal stability of HPMS-PUs increased with AABD content.The fluorophore units in the HPMS-PUs did not readily migrate.

关 键 词：Polysiloxane Polyurethane 1 8-Naphthalimide Fluorescence Thermal properties 

分 类 号：O631.3[理学—高分子化学]