Ultraviolet
Patterned Calixarene-Derived Supramolecular
Gels and Films with Spatially Resolved Mechanical and Fluorescent
Properties
Ji Ha Lee
Sung Ho Jung
Shim Sung Lee
Ki-Young Kwon
Kazuo Sakurai
Justyn Jaworski
Jong Hwa Jung
10.1021/acsnano.7b00997.s002
https://acs.figshare.com/articles/media/Ultraviolet_Patterned_Calixarene-Derived_Supramolecular_Gels_and_Films_with_Spatially_Resolved_Mechanical_and_Fluorescent_Properties/4823377
Supramolecular
assemblies have in the past been considered mechanically
weak and in most cases unable to withstand their own weight. Calixarene-derived
networks can, however, provide robust supramolecular gels. Incorporating
a photoreactive stilbene moiety, we show that the aggregation state
of the material can be tuned by heating and UV exposure in order to
control the mechanical as well as the fluorescent properties. Regulating
the extent of heating to control the proportion of H-aggregates and
J-aggregates and further cross-linking of H-aggregates by control
over UV exposure allows for adjustable photopatterning of the fluorescence
as well as the material stiffness in the range from ∼100 to
450 kPa. We expect this straightforward supramolecular system will
be suitable for advanced prototyping in applications where modulus
and shape are important design criteria.
2017-03-30 00:00:00
Ultraviolet Patterned Calixarene-Derived Supramolecular Gels
supramolecular
photoreactive stilbene moiety
UV exposure
Fluorescent Properties Supramolecular assemblies
material
heating
H-aggregate