Folding and hydrodynamic forces in J-aggregates of 5-phenyl-10,15,20-tris(4-sulfophenyl)porphyrin

被引：147

作者：

Escudero, Carlos

Crusats, Joaquim

Diez-Perez, Ismael

El-Hachemi, Zoubir

Ribo, Josep M.

机构：

[1] Univ Barcelona, Dept Quim Organ, E-08028 Barcelona, Spain

[2] Univ Barcelona, Dept Quim Fis, E-08028 Barcelona, Spain

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2006年 / 45卷 / 47期

关键词：

aggregation; chirality; foldamers; helical structures; porphyrinoids;

D O I：

10.1002/anie.200603182

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

(Figure Presented) Stir it up! Comparison of the evolution with time of J-aggregates of the title porphyrin in stagnant and vortex-stirred solutions showed that chiral-sign selection is due to the action of hydrodynamic gradients (shear flows) on particle folding. Brownian dynamics (stagnant solution) result in irregularly folded mesophases, whereas hydrodynamic gradients (vortex stirring) lead to long-order folding and formation of helical ribbons (see picture). © 2006 Wiley-VCH Verlag GmbH & Co. KGaA.

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页码：8032 / 8035

页数：4

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