Light-induced luminescence quenching in precursor-route poly(p-phenylene vinylene)

The authors report the observation in partially converted precursor-route poly(p-phenylene vinylene) (PPV) of a strong light-induced luminescence fatigue. Increasing the conversion towards the fully conjugated polymer results in a loss of the quenching effect. They discuss exciton annihilation at photoexcited charged polaronic states as a possible mechanism for this phenomenon.

[1]  Hiroshi Ohnuma,et al.  Absorption and Fluorescence Spectra of Polydiacetylenes (4BCMU and 3BCMU) in Solution , 1985 .

[2]  R. Friend,et al.  Correlation between conjugation length and non-radiative relaxation rate in poly(p-phenylene vinylene): a picosecond photoluminescence study , 1987 .

[3]  Paul D. Townsend,et al.  Photo-excitation in conjugated polymers , 1987 .

[4]  Y. H. Kim,et al.  Long-lifetime charged photo-excitations in polydiacetylenes: strongly localised bipolarons , 1988 .

[5]  K. Yoshino,et al.  Thermochromism, Photochromism and Anomalous Temperature Dependence of Luminescence in Poly(3-Alkylthiophene) Film , 1988 .

[6]  Anita C Jones,et al.  Phonon-assisted energy transfer in the mixed molecular crystal p-terphenyl/tetracene , 1983 .

[7]  R. Friend,et al.  Photoexcitation in poly(arylenevinylenes) , 1987 .

[8]  D. Bradley.  Precursor-route poly(p-phenylenevinylene): polymer characterisation and control of electronic properties , 1987 .

[9]  P. Danielsen.  Photoluminescence quenching in cis-polyacetylene (a lattice relaxation approach) , 1987 .

[10]  K. Wong,et al.  Infrared photo-induced absorption in polydiacetylene , 1987 .

[11]  D. Campbell,et al.  Optical absorption from polarons in a model of polyacetylene , 1983 .

[12]  Validity of the Makinson-Landau argument for surface electromagnetic fields , 1987 .

[13]  K. Wong,et al.  Picosecond studies of luminescence in polythiophene and polydiacetylene , 1985 .

[14]  K. Wong,et al.  Infrared studies of optically excited polydiacetylene , 1987 .

[15]  Effects of Ammonia Gas on Properties of Poly (p-phenylene vinylene) , 1987 .

[16]  K. Yoshino,et al.  Kinetics of Photoluminescent Excitons in Polythiophene Films during Electrochemical Doping , 1988 .