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Optical properties of poly[2-methoxy-5-(3′,7′-dimethyloctyloxy)-1,4-phenylenevinylene] light-emitting polymer solutions: effects of molarities and solvents

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Abstract

The optical properties of the solutions of the MDMO-PPV light-emitting polymer were investigated. The maximum mass extinction coefficient values of the solutions of the MDMO-PPV for 6.640 and 3.014 µM were found to be 20.874 and 42.009 L g−1 cm−1, respectively. The absorption band edge values of the solutions of the MDMO-PPV shifted from 2.149 to 1.987 eV with increasing molarity. To obtain lower Eg values (2.020, 2.057, 2.083, 2.088 and 2.103 eV, respectively) of the MDMO-PPV can be preferred xylene, toluene, chlorobenzene, chloroform and tetrahydrofuran solvents, respectively. The E g of the solution of the MDMO-PPV was decreased with molarities and solvents. The refractive index values of the MDMO-PPV were controlled with various solvents. The optical parameters such as single oscillator energy, dispersion energy, M −1, M −3 moments, optical oscillator strengths, linear static refractive index, optical linear susceptibility, third-order nonlinear susceptibility and nonlinear refractive index were calculated using Wemple–DiDomenico equation. The highest contrast was obtained with xylene, while the lowest contrast was obtained with chlorobenzene. The MDMO-PPV can be used in the fabrication of the metal–semiconductor contacts due to low optical band gap and suitable optical parameters. Also, the surface morphology properties of the MDMO-PPV polymer film were investigated.

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Acknowledgments

This work was supported by The Management Unit of Scientific Research Projects of Muş Alparslan University (MUSBAP) under Project 0001. The author is grateful to Mrs. Hilal Gözler who is R&D Scientist and Nanomagnetic Instruments Co. because of helping with the AFM measurements.

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  1. Department of Science Education, Faculty of Education, Muş Alparslan University, Muş, 49250, Turkey

    Bayram Gündüz

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Gündüz, B. Optical properties of poly[2-methoxy-5-(3′,7′-dimethyloctyloxy)-1,4-phenylenevinylene] light-emitting polymer solutions: effects of molarities and solvents. Polym. Bull. 72, 3241–3267 (2015). https://doi.org/10.1007/s00289-015-1464-7

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