Optical Properties and Amplified Spontaneous Emission of Novel MDMO-PPV/C500 Hybrid

Journal Article

AlSalhi, Rasha A. Abumosa , Bandar Ali Al-Asbahi and Mohamad Saleh . 2017

• المجلة \ الصحيفة: Polymers

مستخلص المنشور

The influence of the solvent nature on optical properties of poly[2-methoxy-5-3,7-
dimethyloctyloxy-1,4-phenylenevinylene] (MDMO-PPV)/Coumarine 500 (C500) have been
investigated. In addition, the amplified spontaneous emission (ASE) from MDMO-PPV and efficient
energy transfer between the MDMO-PPV and C500 has been verified. The MDMO-PPV was dissolved
in aromatic and nonaromatic solvents, while the solution blending method was employed to prepare
the MDMO-PPV:C500 hybrid. The quantum yield of the MDMO-PPV was found to increase with the
reduction of a few factors such as polarity index of the solvent, absorption cross section (a), emission
cross section (e), and extinction coefficient ("max). The fluorescence spectra of the MDMO-PPV
appears from two vibronic band transitions (0-0, 0-1) and the ASE occurs at 0-1 transition, which was
verified by the ASE from MDMO-PPV. The MDMO-PPV in toluene exhibited the best ASE efficiency
due to its high quantum yield compared with other solvents. Strong overlap between the absorption
spectrum of MDMO-PPV and emission spectrum of C500 confirmed the efficient energy transfer
between them. Moreover, the ASE for energy transfer of the MDMO-PPV:C500 hybrid was proved.