Premium
Chiroptical Switching Based on Photoinduced Proton Transfer between Homopolymers Bearing Side‐Chain Spiropyran and Azopyridine Moieties
Author(s) -
Angiolini Luigi,
Benelli Tiziana,
Giorgini Loris,
Raymo Françisco M.
Publication year - 2008
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200800192
Subject(s) - spiropyran , chromophore , protonation , polymer chemistry , chemistry , photochemistry , side chain , methacrylate , photoisomerization , macromolecule , spectroscopy , methyl methacrylate , photochromism , polymer , organic chemistry , polymerization , ion , biochemistry , physics , isomerization , quantum mechanics , catalysis
A novel optically‐active polymeric methacrylate, bearing the ( S )‐3‐hydroxy pyrrolidinyl group linked through the nitrogen atom to an azopyridine chromophore, was synthesized and investigated in combination with a polymeric methacrylate incorporating the photoisomerizable spiropyran chromophore in the side‐chain. In the presence of acid, this system can be operated in solution to modulate the protonation of the azopyridine moieties by photoisomerizing the spiropyran component. In addition to UV‐vis spectroscopy, the proton transfer process occurring between the macromolecular components can be also followed by CD spectroscopy, thus behaving as a chiroptical switch.