The solvatochromic behavior of chloroform solutions of poly(3-decyl-2,5-thienylene), poly[3-(10-hydroxydecyl)-2,5-thienylene] and their copolymers was studied by the addition of the non-solvent methanol. A reversed chromic transformation was found associated with the content of the hydroxyalkyl substituent. This anomalous effect was investigated using a number of non-solvents, in particular aliphatic alcohols from methanol up to decanol. In the case of a chloroform/methanol mixture, which gives the maximum anomalous effect, the effect produced by temperature variation was also examined. An explanation based on a molecular approach was attempted.
Anomalous solvatochromic effect. Comparison between decyl and ω-hydroxydecyl 3-substituted polythiophenes / Lanzi M.; Della-Casa C.; Costa-Bizzarri P.; Bertinelli F.. - In: MACROMOLECULAR CHEMISTRY AND PHYSICS. - ISSN 1022-1352. - STAMPA. - 202:9(2001), pp. 1917-1923. [10.1002/1521-3935(20010601)202:9<1917::AID-MACP1917>3.0.CO;2-X]
Anomalous solvatochromic effect. Comparison between decyl and ω-hydroxydecyl 3-substituted polythiophenes
Lanzi M.;
2001
Abstract
The solvatochromic behavior of chloroform solutions of poly(3-decyl-2,5-thienylene), poly[3-(10-hydroxydecyl)-2,5-thienylene] and their copolymers was studied by the addition of the non-solvent methanol. A reversed chromic transformation was found associated with the content of the hydroxyalkyl substituent. This anomalous effect was investigated using a number of non-solvents, in particular aliphatic alcohols from methanol up to decanol. In the case of a chloroform/methanol mixture, which gives the maximum anomalous effect, the effect produced by temperature variation was also examined. An explanation based on a molecular approach was attempted.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
