Photofunctions of Dye Encapsulated Nanostructured Silica Films Suitable for Optical Filter Application

Abstract:

The development of nanostructured silica thin films encapsulated with organic functionalities has been an area of active research. The functionalization of films can be done by post doping, covalent or non-covalent methodology. The materials researchers were interested to study and understand the nature of interactions existing in the host silica network and associated physicochemical properties of the derived films. The photofunction imparted films have been explored for chemical and biological sensing applications. In the presented work, an optical filter application based on dye encapsulated nanostructured silica films is reported. To the best of our knowledge, we report for the first time cresol red- a sulfonephthalein dye based nanostructured silica film acting as optical filter. These supported films were found to resemble optical notch filter with center wavelength (CWL) at 432 nm and optical density of 0.05. The films were formed on glass slides by spin coating technique. The coating solution was prepared by template assisted sol-gel method. The films were studied for their physical and chemical characteristics using an array of instrumental techniques.

• Periodical: Materials Science Forum (Volume 757)
• Pages: 257-269
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.757.257
• Online since: May 2013
• Authors: Shobhit Singh Chauhan, A.L. Sharma, R.V. Jasra
• Keywords: Cresol Red, Mesoporous Material, Nanostructured Materials, Notch Filter, Sol-Gel, Thin Film

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