Rational Concept To Recognize/Extract Single-Walled Carbon Nanotubes with a Specific Chirality

摘要: Single-walled carbon nanotubes (SWNTs) have remarkable and unique electronic, mechanical, thermal properties, which are closely related to their chiralities; thus, the chirality-selective recognition/extraction of SWNTs is one central issues in nanotube science. However, any rational materials design enabling efficiently extract/solubilize pure SWNT with a desired chirality has yet not been demonstrated. Herein we report that certain chiral polyfluorene copolymers can well-recognize preferentially, leading solubilization specific SWNTs. The were prepared by Ni0-catalyzed Yamamoto coupling reaction 2,7-dibromo-9,9-di-n-decylfluorene 2,7-dibromo-9,9-bis[(S)-(+)-2-methylbutyl]fluorene comonomers. selectivity was mainly determined relative fraction achiral side groups. By molecular mechanics simulation, cooperative interaction between fluorene moiety, alky...