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

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 (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.

SUBMITTER: Manabe K

PROVIDER: S-EPMC8395658 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature

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

Manabe Kei K Tsai Sung-Yu SY Kuretani Satoshi S Kometani Satoshi S Ando Katsuyuki K Agata Yoshihiro Y Ohta Noboru N Chiang Yeo-Wan YW Lin I-Ming IM Fujii Syuji S Nakamura Yoshinobu Y Chang Yu-Ning YN Nabae Yuta Y Hayakawa Teruaki T Wang Chien-Lung CL Li Ming-Chia MC Hirai Tomoyasu T

JACS Au 20210401 4

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 (<i>it</i>-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, l ...[more]

PMID: 34467302

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