Order from disorder: Directed assembly of alkyl-π functional molecular liquids |
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Institution: | 1. Division of Soft Matter, Graduate School of Life Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0810, Japan;2. International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba 305-0044, Japan |
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Abstract: | Controlled self-assembly of π-conjugated molecules is a widely accepted approach to optimizing the performance of organic optoelectronics. In particular, directed assembly delivers precisely organized π-conjugated units in response to external stimuli. The attachment of branched alkyl chains not only modulates these assembly processes, but also isolates the π-core as observed in alkyl-π functional molecular liquids (FMLs). This review highlights recent advances in alkyl-π FMLs, their molecular design principle, and the methodologies to achieve their directed assembly by chemical additives and physical stimuli. It also presents how the disorder-to-order transition in alkyl-π FMLs leads to altered photoluminescence and other inherent benefits of these stimuli-driven assembled structures, which comprise a new paradigm in the field of stimuli-responsive soft materials and their application in soft electronics. |
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Keywords: | Alkyl-π functional molecular liquids Directed assembly Hydrophobic amphiphilicity Supercooled liquids Stimuli-response |
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