Synthesis and properties of chiral nanoparticles based on (p)- and (p)-decasubstituted pillar[5]arenes containing secondary amide fragments

Employing induced asymmetric synthesis, new decasubstituted pillar[5]arenes containing ( R )-(+)- or ( S )-(−)-1-phenylethane-1-acetamide fragments have been obtained and characterized. Using NTA and TEM, and circular dichroism spectroscopy, it was shown that the amidopillar[5]arenes synthesized for...

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Bibliographic Details
Published in:RSC advances 2016-01, Vol.6 (11), p.9124-9131
Main Authors: Shurpik, D. N, Padnya, P. L, Evtugyn, V. G, Mukhametzyanov, T. A, Khannanov, A. A, Kutyreva, M. P, Stoikov, I. I
Format: Article
Language:English
Subjects:
Aggregates
Asymmetry
Cotton
Dichroism
Fragments
Heating
Nanoparticles
Synthesis
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Summary:Employing induced asymmetric synthesis, new decasubstituted pillar[5]arenes containing ( R )-(+)- or ( S )-(−)-1-phenylethane-1-acetamide fragments have been obtained and characterized. Using NTA and TEM, and circular dichroism spectroscopy, it was shown that the amidopillar[5]arenes synthesized form spherical chiral nanoscale aggregates in CHCl 3 . During heating, both positive and negative Cotton effects corresponding to nanoparticles in CHCl 3 reversibly decrease. Keeping the nanoparticles at room temperature results in a decrease in their size and intensification of the Cotton effect. Employing induced asymmetric synthesis, new decasubstituted pillar[5]arenes containing ( R )-(+)- or ( S )-(−)-1-phenylethane-1-acetamide fragments have been obtained and characterized.
ISSN:2046-2069
2046-2069
DOI:10.1039/c5ra25562g