Journal
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
Volume 21, Issue 12, Pages 2169-2177Publisher
SPRINGERNATURE
DOI: 10.1007/s43630-022-00286-0
Keywords
Self-assembly; [2+2] cycloaddition; Dynamic covalent bonding; Thymine
Funding
- Leading Graduate Program in Science and Engineering, the PEP Program, Energy-Next, and Nano-Energy Projects, Waseda University
- PRESO, JST [JPMHPR1515]
- NAGASE Science Technology Foundation
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This study investigates the conversion of self-assembled structures into continuous polymeric structures using the [2 + 2]-cycloaddition reaction. Bio-inspired thymine-based bolaamphiphilic molecules were designed and synthesized to allow cycloaddition reaction between two thymines in their self-assembled structure. The study provides a strategy for creating higher molecular weight linear polymers by controlling the photocyclization sites within the self-assembly.
In this study, the conversion of self-assembled structures into continuous polymeric structures by linking the self-assembled molecules using the [2 + 2]-cycloaddition reaction was investigated. Synthesized bio-inspired thymine-based bolaamphiphilic molecules were designed to force the interactions between two molecules to engage two thymines in their self-assembled structure to undergo a cycloaddition reaction. Thymine-based bolaamphiphilic molecules were designed and synthesized using different phenylene spacers based on aromatic substituents (ortho-) (meta-) (para-). The formed self-assembled structures from these molecules were characterized and compared using molecular mechanical simulations. Simulations were performed to discuss the relationship between the inter- and intramolecular cycloaddition sensitivity to different substituents. This study provides a strategy for creating higher molecular weight linear polymers by controlling the photocyclization sites within the self-assembly by spacers between thymines. [GRAPHICS] .
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