Print Email Facebook Twitter Characterization of Spirooxazine and Spiropyran Hosted in Poly(Methyl Methacrylate) for Germicidal UV Source Indicator Application 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 & MaterialsMIP - Materials for Integrated ProductsTS - Technical SciencesIndustrial InnovationUV IndicatorWater DisinfectionPhotochromismPolymer 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 Files To receive the publication files, please send an e-mail request to TNO Library.