Title
Characterization of Spirooxazine and Spiropyran Hosted in Poly(Methyl Methacrylate) for Germicidal UV Source Indicator Application
Author
Bonefacino, J.
Tse, M.L.V.
Pun, C.F.J.
Cheng, X.
Chan, W.K.E.
Boersma, A.
Tam, H.Y.
Publication year
2013
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) and 1’,3’-dihydro-1’,3’,3’-trimethyl-6-nitrospiro[2H-1-benzopyran-2,2’-(2H)-indole] (spi- ropyran) 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 demon- strated 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.
Subject
Mechatronics, Mechanics & Materials
MIP - Materials for Integrated Products
TS - Technical Sciences
Industrial Innovation
UV Indicator
Water Disinfection
Photochromism
Polymer
To reference this document use:
http://resolver.tudelft.nl/uuid:f40acdbb-be98-44b4-90f3-9002115e874a
DOI
https://doi.org/10.4236/opj.2013.37a002
TNO identifier
536706
Publisher
Scirp
Source
Optics and Photonics Journal, 2013 (3), 11-16
Document type
article