Synthesis of two AIE polymers and their sensing performance to S2− in aqueous solution

In this paper, two polymers (P-AMB and P-DMAB) with aggregate induced emission (AIE) effect were synthesized successfully. Compared with the polymer monomer BNEA, P-AMB and P-DMAB not only have stronger AIE effect, but also have excellent water solubility and better light stability. In addition, the two polymers were tested for their response to different anions in aqueous solution, and both showed high selectivity and sensitivity to S 2− . The sensing mechanism of S 2− was studied by ultraviolet visible spectrum, infrared spectrum and 1 H NMR spectrum studies. These two polymer sensors have strong anti-interference ability and wide pH response range (5.0 ~ 10.0) when detecting S 2− , and could be used for qualitative and quantitative detection of S 2− in 100% aqueous solution.