Abstract

We studied the photoluminescence of MEH-PPV polymer films and a MEH-PPV/DND nanocomposite after exposure to gamma irradiation from a radioisotope source of cesium-137 with doses of 0.5–12.2 kGy for H₂O and their relaxation processes after exposure to the maximum dose. Exposure to gamma irradiation leads to the formation of new structural units in MEH-PPV/DND, which are similar in structure to the structural units of the conductive PPV polymer. A microscopic model is proposed that describes the evolution of MEH-PPV/DND photoluminescence in the context of the formation of bonds between aliphatic radicals of polymers and the surface of detonation diamond.

© 2019 Optical Society of America

Lasing from MEH-PPV with a refractive index tunable by electron irradiation

Hyung San Lim, Ju Hyuk Lee, Heon Yong Jeong, and Sung Oh Cho
Opt. Express 29(13) 19945-19954 (2021)

Gas to crystal Effect on the Spectral Line Narrowing of MEH-PPV

Aziz Mahfoud Familia, Andrew Sarangan, and Thomas R. Nelson
Opt. Express 15(13) 8231-8236 (2007)

Effect of gamma-irradiation on the photoluminescence of silver-doped lithium triborate glass

Volodymyr Adamiv, Yaroslav Burak, Natalia Volodko, Ulyana Dutchak, Taras Izo, Ihor Teslyuk, and Andriy Luchechko
Appl. Opt. 63(10) 2630-2635 (2024)

Effects of a radiation dose in gamma-ray irradiation fields on holographic gratings formed by liquid crystal composites

Akifumi Ogiwara, Makishi Toda, Junya Ishido, Minoru Watanabe, and Hiroshi Kakiuchida
OSA Continuum 4(2) 514-528 (2021)

Tolerance of holographic polymer-dispersed liquid crystal memory for gamma-ray irradiation

Akifumi Ogiwara, Minoru Watanabe, and Yoshizumi Ito
Appl. Opt. 56(16) 4854-4860 (2017)