Inversion of supramolecular helicity in oligo-p-phenylene-based supramolecular polymers: influence of molecular atropisomerism.
Angew Chem Int Ed Engl
; 53(5): 1373-7, 2014 Jan 27.
Article
em En
| MEDLINE
| ID: mdl-24352979
ABSTRACT
The helical organization of oligo-p-phenylene-based organogelators has been investigated by atomic force microscopy, circular and vibrational circular dichroism, and Raman techniques. Whilst OPPs with more than two phenyl rings in the core self-assemble into left-handed helices, that with a biphenyl core shows an inversion of the supramolecular helicity depending on the formation conditions through the atropisomerism of the biphenyl central unit. The results presented herein outline a new example of kinetically controlled modulation of supramolecular helicity.
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MEDLINE
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En
Ano de publicação:
2014
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Article