Reversible Janus particle assembly via responsive host-guest interactions

Chem Commun (Camb). 2015 Feb 14;51(13):2725-7. doi: 10.1039/c4cc09672j.


Reversible assembly of Janus particles was manipulated by host-guest interaction of β-cyclodextrin (β-CD) and azobenzene. One side of every Janus particle was modified with β-CD. Superstructures of Janus particles were formed by adding azobenzene-containing polymers to the dispersion of Janus particles. The superstructures were reversibly disassembled by adding α-CD or light irradiation.