Table 2.1 Examples of photoresponsive functionalities that have been incorporated into LMWGs
Reaction class
Example
Equation
Trans–cis
(E-Z) isomerization
Azobenzene
Stilbene
Polymerization
Diacetylene
Dimerization
Imidazole
Benzophenone
Cycloaddition
Anthracene
Tautomerization
N-salicylidene
aniline (anil)
Electrocyclic
reaction
Spiropyran
Dihydroindolizine
Dithienylethene
(DTE)
R groups indicate common derivatization patterns but are not exhaustive
2.2 Light Responsive Gels
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