Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/6970
Title: Characterization of spirooxazine and spiropyran hosted in Poly(methyl methacrylate) for germicidal UV source indicator application
Authors: Bonefacino, J
Tse, MLV
Pun, CFJ
Cheng, X
Chan, WKE
Boersma, A
Tam, HY 
Keywords: UV indicator
Water disinfection
Photochromism
Polymer
Issue Date: Nov-2013
Publisher: Scientific Research
Source: Optics and photonics journal, Nov. 2013, v. 3, no. 7A, p. 11-16 How to cite?
Journal: Optics and photonics journal 
Abstract: A characterization of photophysical properties of 1,3-dihydro-1,3,3-trimethylspiro[2H-indole-2,3’-[3H]naphtha[2,1-b] [1,4]oxazine] (spirooxazine) and1’,3’-dihydro-1’,3’,3’-trimethyl-6-nitrospiro[2H-1-benzopyran-2,2’-(2H)-indole] (spiropyran) compounds hosted in poly(methyl methacrylate) (PMMA) was carried out. The parameters which influenced the photochromic behavior of both compounds were investigated. After ultraviolet (UV) irradiation, it was demonstrated that the temperature was the dominant factor which influenced the deactivation of both materials. For spiropyran, it was demonstrated that the process could be photo-induced with a certain wavelength which we have specified in this manuscript. It was also found that X-Ray did not affect the photo physical properties of spirooxazine and spiropyran. Finally, both materials could be used as low-cost germicidal UV indicators.
URI: http://hdl.handle.net/10397/6970
ISSN: 2160-8881 (print)
2160-889X (online)
DOI: 10.4236/opj.2013.37A002
Rights: Copyright © 2013 Julien Bonefacino et al. This is an open access article distributed under the Creative Commons Attribution Li- cense, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Appears in Collections:Journal/Magazine Article

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