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Electrochemical and optical studies of the band gaps of alternating polyfluorene copolymers

Shimelis Admassie ; Olle Inganaes ; Wendimagegn Mammo ; Erik Perzon (Institutionen för kemi- och bioteknik, Polymerteknologi) ; Mats R. Andersson (Institutionen för kemi- och bioteknik, Polymerteknologi)
Synthetic Metals Vol. 156 (2006), 7-8, p. 614-623.
[Artikel, refereegranskad vetenskaplig]

The electrochem. and optical properties of alternating polyfluorene copolymers with low band gaps were detd. These polymers incorporated fluorene units alternating with groups including electron-withdrawing (A) and electron-donating (D) groups in donor-acceptor-donor (DAD) sequence to achieve the lowering of band gaps. The polymers were solvent-casted on Pt disk electrode and the band gaps were estd. from cyclic voltammetry (CV). These values were compared with values obtained from optical absorption measurements. Although the electrochem. detd. band gaps are slightly higher than the optical band gap in most cases, values are well correlated. The values of the band gaps detd. range from 2.1 to 1.3 eV. [on SciFinder (R)]

Nyckelord: Cyclic voltammetry, Oxidation potential, Reduction potential, UV and visible spectra (electrochem. and optical studies of band gaps of alternating polyfluorene copolymers), Band gap (electrochem., electrochem. and optical studies of band gaps of alternating polyfluorene copolymers), Band gap (optical, electrochem. and optical studies of band gaps of alternating polyfluorene copolymers), electrochem optical band gap polyfluorene



Denna post skapades 2007-01-12.
CPL Pubid: 25384

 

Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Polymerteknologi (2005-2014)

Ämnesområden

Makromolekylfysik
Polymerkemi

Chalmers infrastruktur