Exciton interactions in cyanine dye--hyaluronic acid (HA) complex: reversible and biphasic molecular switching of chromophores induced by random coil-to-double-helix phase transition of HA.

Reversible and biphasic switching of monomer-to-R-chiral dimer transition and R-chiral-to-S-chiral dimer transition of cyanine chromophores were demonstrated by complex formation with hyaluronic acid. Copyright 2004 The Royal Society of Chemistry