Retracted Article: Spatially resolved mechanical properties of photo-responsive azobenzene-based supramolecular gels

Gyuri Mun; Heekyoung Choi; Nayoung Im; Junho Ahn; Jaehyeon Park; Hyowon Seo; Yeonweon Choi; Ji Ha Lee; Jong Hwa Jung

doi:10.1039/C7RA03797J

Retracted Article: Spatially resolved mechanical properties of photo-responsive azobenzene-based supramolecular gels†

Gyuri Mun,‡^a Heekyoung Choi,‡^a Nayoung Im,^a Junho Ahn,^a Jaehyeon Park,^a Hyowon Seo,^a Yeonweon Choi,^a Ji Ha Lee

*^ab and Jong Hwa Jung

*^a

Author affiliations

* Corresponding authors

^a Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 660-701, Korea
E-mail: jonghwa@gnu.ac.kr

^b Department of Chemistry and Biochemistry, The University of Kitakyushu, HiBikino, Kitakyushu 808-013, Japan
E-mail: l-ji@kitakyu-u.ac.jp

Abstract

The viscoelastic and stiffness properties of azobenzene-based supramolecular gels have been investigated by rheometry and AFM. Interestingly, the viscoelastic properties of cis-isomers were 8–10 fold enhanced in comparison to the trans-isomer, which was a unique phenomenon. More interestingly, Young's modulus of gels increased linearly with time of UV irradiation. The stiffness of gels was finely controlled in the spatial micro-scale environment. The improved mechanical strength was attributed to electrostatic interaction with the production of radicals of the gelators.

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Retracted Article: Spatially resolved mechanical properties of photo-responsive azobenzene-based supramolecular gels†

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