Post-Polymerization Modification Approach for Synthesis of Urea Group-Containing Polyacetylenes with Anion-Sensing Properties
WANG Dengfei1, YANG Guoxing1, ZHAO Xinglong1, ZHANG Rui1, HE Shuyan1, REN Juntao2
1. Daqing Petrochemical Research Center, Petrochemical Research Institute of PetroChina, Daqing 163714, China;
2. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116000, China
Abstract：Incorporation of functional groups can endow polyacetylene derivatives with unique physical and chemical properties. These polymers had potential applications in asymmetric catalysis, optical materials, and chemosensors. In this study, carbamate pendent group-containing polyacetylene (P1) was designed and synthesized as a substrate for subsequent modification. On the basis of the carbamate moiety could undergo nucleophilic substitution with various amine molecules, modification of P1 with 1-phenylethanamine and 3,5-bis(trifluoromethyl)aniline afforded the two target polymers bearing urea moieties, P2 and P3, respectively. By virtue of the synergistic effects of intrinsic capability of hydrogen bonding between urea and anion and conjugated main-chain of polyacetylene, P3 exhibited intriguing anion-sensing properties. The addition of anions to the P3/THF solution led to different adsorption peak changes in the UV-vis spectra depending on the anion type, and especially for some cases such as F-, Cl-, Br- and CH3COO-, new peaks appeared around 450 nm and 480 nm at the visible area, suggesting that it can be used as a colorimetric sensor.
WANG Dengfei,YANG Guoxing,ZHAO Xinglong et al. Post-Polymerization Modification Approach for Synthesis of Urea Group-Containing Polyacetylenes with Anion-Sensing Properties[J]. Chemical Reaction Engineering and Technology, 2023, 39(6): 563-568.
