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Updated: Mar 10, 2026

Synthesis and Characterization of Supramolecular Colloids
Published on: April 22, 2016
A Photoresponsive Orthogonal Supramolecular Complex Based on Host-Guest Interactions
Dongsheng Wang1, Manfred Wagner1, Andrew K Saydjari1,2
1Max-Planck Institute of Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.
Abstract:
We synthesized a novel green-light-responsive tetra-ortho-isopropoxy-substituted azobenzene (ipAzo). Cis-ipAzo forms a strong host-guest complex with γ-cyclo dextrin (γ-CD) whereas trans-ipAzo binds weakly. This new photoresponsive host-guest interaction is reverse to the well-known azobenzene (Azo)/α-cyclodextrin (α-CD) complex, which is strong only between trans-Azo and α-CD. By combining the UV-light-responsive Azo/α-CD and green-light-responsive ipAzo/γ-CD host-guest complexes, a photoresponsive orthogonal supramolecular system is developed.
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