Like-Charge PISA: Polymerization-Induced Like-Charge Electrostatic Self-Assembly
Like-Charge PISA: Polymerization-Induced Like-Charge Electrostatic Self-Assembly
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DOI：
10.1021/acsmacrolett.3c00372
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发表时间：
2023-07-13
影响因子：
7.015
通讯作者：
Cai，Yuanli
中科院分区：
文献类型：
--
作者：
Luo，Caihui;Wang，Xiyu;Cai，Yuanli
We report the use ofl-aspartic acid chiral ionic hydrogen bonds to drive liquid–liquid phase separation (LLPS) and precision two-dimensional electrostatic self-assembly in photo-RAFT aqueous polymerization-induced self-assembly (photo-PISA). Homopolymerization can yield salt-resistant, 3 nm ultrafine fibril-structured 5 nm ultrathin lamellaeviaLLPS, a left-to-right-handed chirality transition, and a droplets-to-lamellae transition. Like-charge block copolymerization leads to supercharged yet identical fibril-structured ultrathin lamellae, also,viaLLPS, the left-to-right chirality transition and the droplets-to-lamellae transition. Ultrafine structures maintain intactness upon the seeded polymerization of the oppositely charged monomer. This work demonstrates that amino acid chiral ionic hydrogen bonds are powerful for the precision synthesis of salt-resistant ultrathin membrane nanomaterials.
