A Simple and Feasible Synthetic Strategy towards Poly(4-thiostyrene)
A Simple and Feasible Synthetic Strategy towards Poly(4-thiostyrene)
复制标题
一种简单可行的聚(4-硫代苯乙烯)合成策略
DOI：
10.1002/macp.202200092
复制
发表时间：
2022
影响因子：
2.5
通讯作者：
Hirotaka Ejima
中科院分区：
文献类型：
--
作者：
Jincai Li;Joseph J. Richardson;Hirotaka Ejima
聚（4 -硫苯乙烯），一个历史上具有挑战性的合成聚合物，在这里通过一个可行的三步方案合成。基于新开发的保护-脱保护策略，采用Li/萘对含硫甲基的前驱体聚合物进行脱保护，酸化后得到聚（4‐硫苯乙烯）。这种新开发的方法对于防止巯基的交联至关重要，因此所得到的聚合物可溶于常见的有机溶剂（例如氯仿、四氢呋喃），并且可以长期储存，这在过去60年里一直具有挑战性。成功的合成得到了各种表征技术的证实，包括核磁共振、傅里叶变换红外光谱（FTIR）和拉曼分析，这些技术都是以前的报告中通常无法获得的新的有用数据。这项工作为合成这种有前途的聚合物提供了一个可靠的方法，并为研究含硫醇聚合物提供了一条新的途径。
Poly(4‐thiostyrene), a historically challenging to synthesize polymer, is synthesized herein via a feasible three‐step protocol. Based on the newly developed protection–deprotection strategy, the precursor polymer containing thiomethyl groups is deprotected using Li/naphthalene to yield poly(4‐thiostyrene) after acidification. This newly developed procedure is crucial for preventing crosslinking of the thiol groups and therefore the resulting polymer is soluble in common organic solvents (e.g., chloroform, tetrahydrofuran) and can be stored long‐term, which has been challenging to accomplish over the past 60 years. The successful synthesis is confirmed by various characterization techniques including NMR, Fourier‐transform infrared spectroscopy (FTIR), and Raman analysis, which collectively are new and useful data that have generally been unavailable in previous reports. This work provides a robust approach for synthesizing this promising polymer and offers a new route to investigate thiol‐containing polymers.