Chiral Silica with Preferred-Handed Helical Structure via Chiral Transfer
Kei ManabeKei Manabe 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 More by Kei Manabe , Sung-Yu Tsai, Satoshi Kuretani, Satoshi Kometani, Katsuyuki Ando, Yoshihiro Agata, Noboru Ohta, Yeo-Wan Chiang, I-Ming Lin, Syuji Fujii, Yoshinobu Nakamura, Yu-Ning Chang, Yuta Nabae, Teruaki Hayakawa, Chien-Lung Wang, Ming-Chia Li*, and Tomoyasu Hirai*
ACS Publications JACS Au 2021
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 (it-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.
polyhedral oligomeric silsesquioxane (POSS), stereoregularity, chiral transfer, living anionic polymerization, silica