Guo Ming, Zhang Xinge, Zheng Yilu, Huang Dinghai
Department of Chemistry, Zhejiang Agricultural & Forestry University Hangzhou Zhejiang 311300 China
National Engineering and Technology Research Center of Wood-based Resources Comprehensive Utilization, Zhejiang Agricultural & Forestry University Hangzhou Zhejiang 311300 China.
RSC Adv. 2018 Jul 18;8(45):25636-25644. doi: 10.1039/c8ra04323j. eCollection 2018 Jul 16.
A cyclodextrin aldehyde based molecularly imprinted polymer with thermally responsive Diels-Alder (DA) linkages of grafted furan-type dienes was polymerized. The synthesized DA-MIP has dienophile characteristics and the specific absorption of ethyl carbamate (EC) can be switched on or off simply by thermal adjustment to 130 °C and 60 °C, respectively. The imprinting factors () of the MIP and rDA-MIP to EC were 6.2 and 5.0, and the selection factors () were 5.2 and 4.0, respectively. The restoration of the molecular target ratio was 88%, as determined by absorption and desorption experiments. The thermal restoration ratio, determined by thermal cycling experiments, was 78%. A new electrochemical sensor was prepared using the DA-MIP and its responsiveness for detecting trace amounts of EC was investigated. The results indicate that the electrode response has good affinity and excellent specific recognition performance for template molecular chemicals.
一种基于环糊精醛的分子印迹聚合物被聚合，该聚合物带有接枝呋喃型二烯的热响应性狄尔斯-阿尔德（DA）键。合成的DA-MIP具有亲双烯体特性，氨基甲酸乙酯（EC）的特异性吸附可以分别通过简单地将温度调节到130°C和60°C来开启或关闭。MIP和rDA-MIP对EC的印迹因子（）分别为6.2和5.0，选择因子（）分别为5.2和4.0。通过吸附和解吸实验确定，分子靶标比例的恢复率为88%。通过热循环实验确定的热恢复率为78%。使用DA-MIP制备了一种新型电化学传感器，并研究了其对痕量EC的响应性。结果表明，该电极响应对模板分子化学品具有良好的亲和力和优异的特异性识别性能。
