A Dithienylethene-Based Rewritable Hydrogelator

Dithienylethene photochromic switching units have been incorporated into a hydrogelating system based on a tripeptide motif. The resulting hybrid system provided both a photochromic response and the ability to gelate water under acidic and neutral conditions. Fluorescence spectroscopy shows that the...

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Bibliographic Details
Published in:Chemistry : a European journal 2014-03, Vol.20 (11), p.3077-3083
Main Authors: van Herpt, Jochem T., Stuart, Marc C. A., Browne, Wesley R., Feringa, Ben L.
Format: Article
Language:English
Subjects:
Chemistry
electron microscopy
Fibers
Fluorescence
gels
Hybrid systems
Hydrogels - chemistry
Molecular Structure
photochromism
Solubility
Spectrometry, Fluorescence
Spectroscopy
Stacks
Sulfur Compounds - chemistry
Switches
Switching
Water - chemistry
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Summary:Dithienylethene photochromic switching units have been incorporated into a hydrogelating system based on a tripeptide motif. The resulting hybrid system provided both a photochromic response and the ability to gelate water under acidic and neutral conditions. Fluorescence spectroscopy shows that the dithienylethene units are in sufficient proximity to each other to stack in gel fibers, with the tripeptide unit determining solubility. TEM measurements provided insight into the microscopic structure of the fibers formed. Flicking the switch: Dithienylethene photochromic switching units have been incorporated into a hydrogelating system based on a tripeptide motif. The resulting hybrid system provides both a photochromic response (see figure) and the ability to gelate water under acidic and neutral conditions.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.201304064