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模板预组织效应驱动的卟啉超分子组装的手性增强

Chirality Enhancement of Porphyrin Supramolecular Assembly Driven by a Template Preorganization Effect.

作者信息

Gaeta Massimiliano, Raciti Domenica, Randazzo Rosalba, Gangemi Chiara M A, Raudino Antonio, D'Urso Alessandro, Fragalà Maria E, Purrello Roberto

机构信息

Department of Chemical Sciences, Università degli Studi di Catania, Viale A. Doria, 6, 95125, Italy.

出版信息

Angew Chem Int Ed Engl. 2018 Aug 13;57(33):10656-10660. doi: 10.1002/anie.201806192. Epub 2018 Jul 15.

DOI:10.1002/anie.201806192
PMID:29939459
Abstract

Cationic polylysine promotes, under neutral conditions, the spontaneous aggregation of opposite charged ZnTPPS in water. Spectroscopic investigations evidence a different preorganization of ZnTPPS onto the polypeptide matrix depending on the chain length. Spinodal decomposition theory in confined geometry is used to model this mechanism by considering the time evolution of a homogeneous distribution of randomly adsorbed particles (porphyrins) onto a rodlike polyelectrolyte (polymer) of variable length L.

摘要

在中性条件下，阳离子聚赖氨酸可促进带相反电荷的锌原卟啉IX（ZnTPPS）在水中自发聚集。光谱研究表明，根据链长不同，锌原卟啉IX在多肽基质上的预组织方式也不同。通过考虑随机吸附的粒子（卟啉）在长度可变的棒状聚电解质（聚合物）上均匀分布随时间的演化，利用受限几何中的旋节线分解理论对该机制进行建模。

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