通过手性转移制备具有优先手性螺旋结构的手性二氧化硅

Chiral Silica with Preferred-Handed Helical Structure via Chiral Transfer.

作者信息

Manabe Kei, Tsai Sung-Yu, Kuretani Satoshi, Kometani Satoshi, Ando Katsuyuki, Agata Yoshihiro, Ohta Noboru, Chiang Yeo-Wan, Lin I-Ming, Fujii Syuji, Nakamura Yoshinobu, Chang Yu-Ning, Nabae Yuta, Hayakawa Teruaki, Wang Chien-Lung, Li Ming-Chia, Hirai Tomoyasu

机构信息

Department of Applied Chemistry, Faculty of Engineering and Graduate School of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka 535-8585, Japan.

Department of Applied Chemistry, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu 30010, Taiwan.

出版信息

JACS Au. 2021 Apr 1;1(4):375-379. doi: 10.1021/jacsau.1c00098. eCollection 2021 Apr 26.

DOI:10.1021/jacsau.1c00098

PMID:34467302

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8395658/

Abstract

A strategy to obtain chiral silica using an achiral stereoregular polymer with polyhedral oligomeric silsesquioxane (POSS) side chains is described herein. The preferred helical conformation of the POSS-containing polymer could be achieved by mixing isotactic polymethacrylate-functionalized POSS (-PMAPOSS) and a chiral dopant. The array structure of POSS molecules, which are placed along the helical conformation, is memorized even after removing the chiral dopant at high temperatures, leading to a chiral silica compound with exclusive optical activity after calcination.

摘要

本文描述了一种使用具有多面体低聚倍半硅氧烷（POSS）侧链的非手性立构规整聚合物来获得手性二氧化硅的策略。通过将全同立构聚甲基丙烯酸酯官能化的POSS（-PMAPOSS）与手性掺杂剂混合，可以实现含POSS聚合物的优选螺旋构象。即使在高温下去除手性掺杂剂后，沿螺旋构象排列的POSS分子的阵列结构仍被保留，煅烧后得到具有独特光学活性的手性二氧化硅化合物。