White light emission from polystyrene under pulsed ultra violet laser irradiation

This paper reports for the first time the luminescent property of polystyrene (PS), produced by pulsed ultra violet laser irradiation. We have discovered that, in air, ultra-violet (UV) irradiated PS nanospheres emit bright white light with the dominant peak at 510 nm, while in vacuum they emit in t...

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Detalles Bibliográficos
Autores principales: Kim, Eunkyeom, Kyhm, Jihoon, Kim, Jung Hyuk, Lee, Gi Yong, Ko, Doo-Hyun, Han, Il Ki, Ko, Hyungduk
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2013
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3832854/
https://www.ncbi.nlm.nih.gov/pubmed/24247038
http://dx.doi.org/10.1038/srep03253
Descripción
Sumario:This paper reports for the first time the luminescent property of polystyrene (PS), produced by pulsed ultra violet laser irradiation. We have discovered that, in air, ultra-violet (UV) irradiated PS nanospheres emit bright white light with the dominant peak at 510 nm, while in vacuum they emit in the near-blue region. From the comparison of PS nanospheres irradiated in vacuum and air, we suggest that the white luminescence is due to the formation of carbonyl groups on the surface of PS by photochemical oxidation. Our results potentially offer a new route and strategy for white light sources.

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