Premium
Structural effects in poly(3‐alkylthiophene)s on the exposition to poor solvent
Author(s) -
Caronna Tullio,
Catellani Marinella,
Luzzati Silvia,
Meille Stefano Valdo,
Romita Valeria
Publication year - 1997
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.1997.030181007
Subject(s) - raman spectroscopy , alkyl , solvent , materials science , polymer chemistry , absorption spectroscopy , photochemistry , pentane , absorption (acoustics) , solvent effects , side chain , chemistry , polymer , organic chemistry , optics , composite material , physics
The exposure to pentane vapour of poly(3‐alkylthiophene)s with different alkyl chains produces a modification in the optical properties of the thin films. The treatment induces a red‐shift of the electronic absorption maximum and the appearance of vibronic structure in the UV spectra. We have followed these changes with IR and Raman spectroscopies to monitor the modification of the backbone conjugation, and with X‐ray diffraction to evidence the structural order of the chains.