Supramolecular Chirality in Organogels: A Detailed Spectroscopic, Morphological, and Rheological Investigation of Gels (and Xerogels) Derived from Alkyl Pyrenyl Urethanes

被引：53

作者：

Das, Rajat K. ^{[1
]}

Kandanelli, Ramesh ^{[1
]}

Linnanto, Juha ^{[2
]}

Bose, Kunal ^{[3
]}

Maitra, Uday ^{[1
]}

机构：

[1] Indian Inst Sci, Dept Organ Chem, Bangalore 560012, Karnataka, India

[2] Univ Jyvaskyla, Dept Chem, SF-40351 Jyvaskyla, Finland

[3] S Asia Pacific, Agilent Technol Nanomeasurements, Bangalore 560048, Karnataka, India

来源：

LANGMUIR | 2010年 / 26卷 / 20期

基金：

芬兰科学院;

关键词：

CIRCULAR-DICHROISM; SOLDIERS PRINCIPLE; GELLING PROPERTIES; AMPLIFICATION; SERGEANTS; GELATION; TRANSCRIPTION; GELATORS; COLLAGEN; POLYMER;

D O I：

10.1021/la1029905

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This Article addresses the formation of chiral supramolecular structures in the organogels derived from chiral organogelator 1R (or 2R), and its mixtures with its enantiomer (1S) and achiral analogue 3 by extensive circular dichroism (CD) spectroscopic measurements. Morphological analysis by atomic force microscopy (AFM) and scanning electron microscopy (SEM) were complemented by the measurements of their bulk properties by thermal stability and rheological studies. Specific molecular recognition events (1/3 vs 2/3) and solvent effects (isooctane vs dodecane) were found to be critical in the formation of chiral aggregates. Theoretical studies were also carried out to understand the interactions responsible for the formation of the superstructures.

引用

页码：16141 / 16149

页数：9

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