Dendritic Effect on the Photoisomerization of 4,4′-Distyrylbiphenyl in Aqueous Solution

Newly synthesized 4,4′-distyrylbiphenyl-cored water-soluble dendrimers underwent trans-to-cis photoisomerization, while the core 4,4′-distyrylbiphenyl underwent cis-to-trans one-way photoisomerization.