氨基苯硼酸修饰的聚联乙炔囊泡的合成及热可逆研究

Research on Fabrication and Reversible Thermal Transition of Diacetylene Vesicles Modified with Amino-phenylboronic Acid

以氨基苯硼酸修饰的10，12-二十五碳二炔酸（PCDA）为单体，经囊泡组装、聚合制备了一种具有热可逆性质的聚联乙炔衍生物（APCDA-PBA），采用傅里叶变换红外光谱（FT-IR）、扫描电子显微镜（SEM）、微孔板检测系统对单体官能团、囊泡形貌、温度的感应变化进行表征，结果表明，修饰后的聚联乙炔衍生物的热可逆有效温度范围为30℃～60℃。在该温度范围内，随着温度上升，蓝相650nm处的吸收峰发生红移，出现红相540nm的吸收峰；当降温时，红相540nm处的吸收峰开始蓝移，650nm处吸收峰开始恢复。

The polydiacetylene derivative （APCDA-PBA） with reversible thermal transition was prepared by vesicle assembly, polymerization using benzene amino acid-modified carbon diyne 10,12 twenty- five acid （PCDA） monomer. The functional groups, surface morphology and thermal transition of vesicles were characterized by Fourier Transform infrared spectroscopy （FT-Itl）,scanning electron microscope （SEM） and Molecular Devices. The results indicates that the modified Polydiacetylenes＂ thermal transition range is 30℃-60℃. With the rising of temperatures, a blue-to-red color transition with a peak shift from 650 nm to 540 nm was observed. With the falling of temperature, the corresponding color changes from red to blue.