Premium
Highly Fluorescent Merocyanine and Cyanine PMMA Copolymers
Author(s) -
Pasch Peter,
Papadopoulos Julian,
Goralczyk Andreas,
Hofer Marc L.,
Tabatabai Monir,
Müller Thomas J. J.,
Hartmann Laura
Publication year - 2018
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201800277
Subject(s) - cyanine , merocyanine , copolymer , monomer , photochemistry , solvatochromism , fluorescence , chromophore , polymer chemistry , materials science , quantum yield , methyl methacrylate , methacrylate , chemistry , polymer , photochromism , optics , physics , composite material
Polymerizable merocyanine and cyanine dye monomers are synthesized and applied in a statistical copolymerization with methylmethacrylate, giving a series of highly fluorescent poly(methyl methacrylate) (PMMA) copolymers. Photophysical properties of yellow to red merocyanine‐ and of pink to dark purple cyanine‐containing copolymers are studied by fluorescence spectroscopy in solid state as well as in different solvents. The highest quantum yield measured in the solid state is observed for copolymers with the lowest dye content: 16% for merocyanine‐based and 13% for cyanine‐based copolymers, respectively. Fluorescence properties in solution show positive solvatochromism for both merocyanine monomer and copolymer. Copolymer, in comparison to monomer, is hypsochromically shifted to lower wavelengths which point toward H‐aggregation of the chromophores in the copolymer matrix.