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Effect of Chain Rigidity and Effective Conjugation Length on the Structural and Photophysical Properties of Pyridine‐Based Luminescent Polymers
Author(s) -
Tammer M.,
Horsburgh L.,
Monkman A.P.,
Brown W.,
Burrows H.D.
Publication year - 2002
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/1616-3028(20020618)12:6/7<447::aid-adfm447>3.0.co;2-e
Subject(s) - materials science , delocalized electron , copolymer , rigidity (electromagnetism) , polymer , monomer , luminescence , dynamic light scattering , scattering , pyridine , chain (unit) , chemical physics , polymer chemistry , photochemistry , nanotechnology , optics , optoelectronics , composite material , nanoparticle , organic chemistry , chemistry , physics , astronomy
We report on the characterization of a number of random copolymers of “ para ” poly(2,5‐pyridinediyl) (PPY) and “ meta ” poly(2,6‐pyridinediyl) (PmPY). We demonstrate some ability to control the photophysical properties by variation of the ratio of the monomeric components of the copolymers. These effects, in both film and solution, are then related to the chain rigidity and effective conjugation length of each copolymer as determined by light scattering, ellipsometric, and optical measurements. We find that, as expected, the more rigid the polymer chain, the more delocalized the backbone π‐electrons become in the solid state. However, in solution this does not appear to be the case.