Davletbaeva Ilsiya M, Li Ekaterina D, Faizulina Zulfiya Z, Sazonov Oleg O, Mikhailov Oleg V, Safiullin Karim R, Davletbaev Ruslan S
Technology of Synthetic Rubber Department, Kazan National Research Technological University, Karl Marx str., 68, 420015 Kazan, Russia.
Material Science and Technology of Materials Department, Kazan State Power Engineering University, Krasnoselskaya str., 51, 420066 Kazan, Russia.
Materials (Basel). 2023 Oct 22;16(20):6810. doi: 10.3390/ma16206810.
The influence of stable-to-self-condensation Cu(II)-coordinated polyoxyethylene-substituted silicas (ASiP-Cu-0.5) on the synthesis of microporous block copolymers (OBCs) whose structural feature is the existence of coplanar polyisocyanate blocks of acetal nature (O-polyisocyanates) and a flexible-chain component of amphiphilic nature was studied. The use of ASiP-Cu-0.5 increased the yield of O-polyisocyanate blocks and the microphase separation of OBC. The resulting OBCs turned out to be effective sorbents for the analytical reagents PAN and PHENAZO, which, being in the micropore cavity, interacted with copper(II) and magnesium ions. To reduce the thickness of the selective OBC layer ten-fold and simplify the technology for obtaining analytical test systems, polyethylene terephthalate was used as a substrate for applying OBC. It was found that the increased sensitivity of the resulting test systems was due to the fact that in thin reaction layers, the efficiency of the formation of O-polyisocyanate blocks noticeably increased.
研究了稳定至自缩合的铜（II）配位聚氧乙烯取代二氧化硅（ASiP-Cu-0.5）对微孔嵌段共聚物（OBCs）合成的影响，该微孔嵌段共聚物的结构特征是存在具有缩醛性质的共平面多异氰酸酯嵌段（O-多异氰酸酯）和两亲性质的柔性链组分。使用ASiP-Cu-0.5提高了O-多异氰酸酯嵌段的产率和OBC的微相分离。所得的OBCs被证明是分析试剂PAN和菲那唑的有效吸附剂，它们在微孔腔内与铜（II）和镁离子相互作用。为了将选择性OBC层的厚度减小十倍并简化获得分析测试系统的技术，使用聚对苯二甲酸乙二酯作为涂覆OBC的基材。发现所得测试系统灵敏度的提高是由于在薄反应层中，O-多异氰酸酯嵌段的形成效率显著提高。
