Inverse Kinetic and Equilibrium Isotope Effects on Self-Assembly and Supramolecular Chirality of Porphyrin J-Aggregates

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• 作者：Dr. Roberto Zagami ; Prof. Andrea Romeo ; Dr. Maria A. Castriciano and Prof. Luigi Monsù ;  Scolaro
• 刊名：Chemistry - A European Journal
• 出版年：2017
• 出版时间：January 1, 2017
• 年：2017
• 卷：23
• 期：1
• 页码：70-74
• 全文大小：697K
• ISSN：1521-3765

文摘

When mixtures of D₂O/DCl are used to foster the self-assembly formation of TPPS₄ porphyrin J-aggregates in aqueous solutions, an inverse kinetic isotope effect of 0.4 and an inverse equilibrium isotope effect of 0.6 are clearly detected. Most importantly, the addition of at least 10 % D₂O causes an inversion in the handedness of the final chiral J-aggregates, thus evidencing an important role of deuterium in driving the enantiomeric excess in the scalemic mixture of such supramolecular assemblies.