3 years ago

Chirality Control and Its Memory at Microphase-Separated Interface of Self-Assembled Chiral Block Copolymers for Nanostructured Chiral Materials

Chirality Control and Its Memory at Microphase-Separated Interface of Self-Assembled Chiral Block Copolymers for Nanostructured Chiral Materials
Ming-Chia Li, Eiji Yashima, Hsiao-Fang Wang, Naoki Ousaka, Rong-Ming Ho
Here, we show the induced chirality of an achiral chromophoric dye as a joint of polylactide-containing chiral block copolymers (BCPs*) driven by self-assembly, giving the achiral dyes preferentially arranged in a one-handed helical array at the microphase-separated interface. This helical arrangement of the achiral dyes can be “memorized” after hydrolysis of the polylactides in the BCPs* and serves as a chiral template for further chirality induction of different achiral dyes, probably through attractive aromatic π–π interactions at the interface, producing nanostructured chiral materials with tunable circular dichroism signals at desired wavelengths.

Publisher URL: http://dx.doi.org/10.1021/acsmacrolett.7b00493

DOI: 10.1021/acsmacrolett.7b00493

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