Naoh ar

PEN−PPL was synthesized in our laboratory as per the previous report [37 (link)]. Meanwhile, PEN−BPA was purchased from Sichuan Energy Investment Chuanhua New Material Technology Co., Ltd. (Chengdu, China) since it is one of the commercial types of PEN. It was used after purification with dilute hydrochloric acid and deionized water to remove residual organic solvent and catalyst. The employed typical PDA monomer is 10, 12-pentacosadiynoic acid (PCDA) (98%, RG), which was obtained from Shanghai Titan Technology Co. (Shangai, China), Ltd. N, N-dimethylformamide (DMF) (AR) and NaOH (AR) were purchased from Chengdu Kelong Chemical Co., Ltd. (Chengdu, China) and used directly without further purification.

Diethoxyacetophenone (DEAP, 99%) and 3-acrylamidophenylboronic acid (3-AAPBA, 99%) were purchased from Aladdin Co. Ltd (Shanghai, China). Acrylamide (AAm, 99%) was purchased from Maclin (Shanghai, China). Acrylic acid (AAc, 99%) was purchased from Jindong Tianzheng Fine Chemical Reagent Factory (Tianjin, China). N,N’-Methylene-bis (acrylamide) (BIS, 99%) was purchased from Adamas-beta, Shanghai China. Dimethylsulfoxide (DMSO, 99%) was obtained from Chengdu Jinshan Chemical Reagent Company (Chengdu, China). Polyvinyl alcohol (PVA, 99%), NaOH (AR) and HCl (AR) were purchased from Chengdu Kelong Chemical Reagent Company (Chengdu, China). All the reagents were used as received.