摘要
通过重氮、还原、取代、醚化、酯化等反应,合成了具有温敏和光敏基团的新型双功能性树枝状单体,采用红外光谱(FTIR)、核磁共振(~1HNMR、^(13)CNMR)、质谱(MS)对目标产物进行了表征;通过紫外可见分光光度计(UVVis)对单体水溶液的温敏性和光敏性进行了研究。结果表明:单体水溶液(1 mg/m L)的低临界溶解温度(LCST)为12.5℃;紫外光照射后,LCST降低了6.3℃,同时,单体水溶液对紫外可见光的吸收具有良好的可逆性。
A novel dual functional dendritic monomer containing thermo-responsive and light-responsive groups was designed and prepared via a multi-step process of diazotization,reduction,substitution,etherification,and esterification reaction. The chemical structure of monomer was confirmed by Fourier transform infrared spectroscopy（ FTIR）,nuclear magnetic resonance（^1HNMR and ^13CNMR） and mass spectrometry（ MS） techniques. The thermo-and light-responsive behaviors of the monomer aqueous solution were investigated by ultraviolet and visible spectrophotometry（ UV-Vis）. The results showed that the lower critical solution temperature（ LCST） of the monomer aqueous solution（ 1 mg / m L） was12. 5 ℃,and decreased by 6. 3 ℃ after UV light irradiation. Meanwhile,monomer aqueous solution demonstrated a good reversibility to UV-Vis light absorption.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2016年第6期613-619,共7页
Fine Chemicals
基金
国家自然科学基金项目(21576076
21106037)~~
关键词
双重刺激响应性
树枝状单体
温敏基团
偶氮苯光敏基团
功能材料
dual stimuli-responsive
dendritic monomer
thermo-responsive groups
azobenzene photo-responsive group
functional materials
