Poly(dihexadecyl-4H-cyclopenta[2,1-b : 3,4-b ']dithiophene) film formationby cyclic voltammetry: dependence of the optical properties and morphologyon the thickness

The voltammetric, morphologic and spectral properties of poly(dihexadecyl-4 H-cyclopenta[2,1-b:3.4-b']dithiophene), synthesised on ITO electrode in ace tonitrile/dichloromethane mixed solvent by cyclic voltammetry, strongly dep end on the film thickness. The polymerisation occurs through two successive steps: the electrode covering and a further growing of the film on the pol ymer coated electrode. The rate of the film growing is higher in acetonitri le-rich solvent and is a linear function of the monomer concentration durin g both the electrode covering and the subsequent growing step. (C) 1999 Els evier Science Ltd. All rights reserved.