二肽
手性(物理)
对映体
环加成
化学
结晶学
Crystal(编程语言)
晶体结构
化学物理
材料科学
立体化学
手征对称破缺
肽
催化作用
有机化学
对称性破坏
物理
量子力学
生物化学
程序设计语言
计算机科学
Nambu–Jona Lasinio模型
作者
Rishika Rai,Baiju P. Krishnan,Kana M. Sureshan
标识
DOI:10.1073/pnas.1718965115
摘要
Significance Recently many crystals have been reported to show various mechanical responses when triggered by stimuli (heat, light, and pressure). Such properties are attributed to polymorphic transitions, conformational changes, packing changes, isomerizations, or chemical reactions inside the crystal and the consequent strain developed between parent and daughter phases. The role of molecular chirality in such macroscopic phenomena is yet to be established. In the present study we found that crystals of dipeptide LL undergo right-handed twisting and those of its enantiomer, dipeptide DD, undergo left-handed twisting upon heat-induced topochemical azide–alkyne cycloaddition. This study provides clear evidence for the role of molecular chirality in controlling the direction of macroscopic twisting of crystals.
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