relaxation to the vibrationally hot ground electronic state. About 4% (16%) of the excited thymine in the ionic liquid (CD3CN) relaxed to an intermediate electronic state, which relaxed into a low‐lying triplet state by intersystem crossing (ISC) (ISC did not relax to the ground electronic state within the experimental period (1 ns)). The low ISC yield for thymine in an ionic liquid was correlated with molecular
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
在这项研究中,研究了通过使用 [2 + 2]-环加成反应连接自组装分子,将自组装结构转化为连续的聚合物结构。合成的受生物启发的基于胸腺嘧啶的 bola 两亲分子被设计为迫使两个分子之间的相互作用使两个胸腺嘧啶参与其自组装结构以进行环加成反应。基于芳族取代基(邻-)(间-)(对-),使用不同的亚苯基间隔基设计和合成了基于胸腺嘧啶的双亲分子。使用分子力学模拟对这些分子形成的自组装结构进行了表征和比较。进行模拟以讨论分子间和分子内环加成对不同取代基的敏感性之间的关系。 图形概要 基于胸腺嘧啶的 bola 两性分子的分子间 [2 + 2] 环加成反应在自组装纳米带状结构内进行,形成连续的共价结构。