Mechanically induced cis-to-trans isomerization of carbon–carbon double bonds using atomic force microscopy

文献情報

出版日 2016-10-21

DOI 10.1039/C6CP05696B

インパクトファクター 3.676

著者

Milad Radiom, Phally Kong, Plinio Maroni, Mark Schäfer, Andreas F. M. Kilbinger, Michal Borkovec

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要旨

Cis-to-trans isomerization of carbon–carbon double bonds can be induced by the application of mechanical force. Using single molecule force spectroscopy by means of atomic force microscopy (AFM) we pulled polymer molecules which contained cis double bonds in the backbone. In the force versus extension profiles of these polymers, a sudden extension increase is observed which is due to the conversion of shorter cis isomers into longer trans isomers. The added length to the polymer results in relaxation in probed force. We find that the isomerization occurs at forces of 800 ± 60 pN, independent of AFM tip and solid substrate chemistries. Investigation of similar polymers which exclusively contained single bonds in the backbone showed no evidence of a similar transition.

掲載誌

Physical Chemistry Chemical Physics

CiteScore: 5.5

自己引用率: 10.3%

年間論文数: 3036

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