Journal article

Publication year: 1999

Pages: 1801-1806

Journal: Physical Chemistry Chemical Physics

Volume number: 1

Issue number: 8

ISSN: 1463-9076

eISSN: 1463-9084

DOI Link: https://doi.org/10.1039/a808586b

Publisher: Royal Society of Chemistry

Abstract: 
Thin films of the title compound MePTCDI were deposited by physical vapour deposition on microstructured interdigital Au electrode arrays on a SiO2-Si substrate. Initial island formation followed by bulk him growth was detected by conductivity measurements during the film growth. Conductivity changes were observed as a consequence of exposure of the films to partial pressures of acetone and ethanol in the range of 10(-7)-10(-4) mbar. Following a relative fast decrease at the beginning of exposure the conductivity reached a steady state after about 10 min in each case. The conductivity of the films in the steady state followed a Langmuir adsorption law. Analysis of the time-dependence of the conductivity before the steady state was reached revealed the presence of a redox reaction which leads to the observed changes in charge carrier concentration in the films. Assuming first order kinetics for this reaction the transients as obtained at different partial pressures could be successfully discussed and the validity of the model consisting of a surface reaction in two steps was thereby confirmed.

Harvard Citation style: Graaf, H., Schlettwein, D. and Jaeger, N. (1999) Redox reactions of acetone and ethanol with the surface of N,N′-dimethylperylene-3,4,9,10-biscarboximide (MePTCDI) thin films, Physical Chemistry Chemical Physics, 1(8), pp. 1801-1806. https://doi.org/10.1039/a808586b

APA Citation style: Graaf, H., Schlettwein, D., & Jaeger, N. (1999). Redox reactions of acetone and ethanol with the surface of N,N′-dimethylperylene-3,4,9,10-biscarboximide (MePTCDI) thin films. Physical Chemistry Chemical Physics. 1(8), 1801-1806. https://doi.org/10.1039/a808586b