Journal ArticleDOI
The nature of the silica cage as reflected by spectral changes and enhanced photostability of trapped Rhodamine 6G
Reads0
Chats0
TLDR
Rhodamine 6G was embedded in a matrix of silica gel glass by the sol-to-gel technique as discussed by the authors, and its photostability and non-leachability were discussed in comparison with other solid environments, such as adsorption on powders and within porous glasses, thin films, and doping of plastic matrices.Abstract:
Rhodamine 6G was embedded in a matrix of silica gel glass by the sol to gel technique. The special features of an inorganic oxide glass as a carrier of an organic dye are discussed in comparison with other solid environments, such as adsorption on powders and within porous glasses, thin films, and doping of plastic matrices. Among the advantages mentioned are photostability of the glass matrix, trapping of the dye molecule, and its total isolation from undesired interactions with its neighboring dye molecules, impurities, and photodecomposition products; nonleachability of the dye; the ability to reach stable very high dye concentrations; reduction of translational, rotational, and vibrational degrees of freedom of the trapped dye; good transparency down to the UV. Embedding R6G in the silica glass enables one to reach high concentrations without undesirable dye aggregation. Stokes shift is larger in the glass than in water. Photostability of the dye is higher in the glass than in water. A remarkable front-face fluorescence stability is observed. These observations, and a critical review of the literature, are used to elucidate the nature of the silica glass cage: it is suggested that it is a hydroxylic polar environment, though somewhat less polar than water. The rigidity of the cage is discussed in terms of required reorientation of the environment around an excited state.read more
Citations
More filters
Journal ArticleDOI
Birth of the sol–gel method: early history
TL;DR: The sol-gel method as discussed by the authors is a well-known method for manufacturing optical glass fibers for communication, but also for processing a wide range of functional, high technology materials, such as photonic, electronic, micromechanical, chemical, and bionic materials.
Journal ArticleDOI
Organic/inorganic hybrid electroluminescent devices prepared via sol-gel process
TL;DR: In this paper, an organic electroluminescent device (ELD) was fabricated in a simple structure of anode/hybrid layer/cathode, and the turn-on voltage was ca. 30 Vdc with the strong emission at 40 Vdc.
Journal ArticleDOI
What Is Driving the Growth of Inorganic Glass in Smart Materials and Opto-Electronic Devices?
TL;DR: In the last decades, inorganic glass was integrated into opto-electronic devices such as optical fibers, semiconductors, solar cells, transparent photovoltaic devices, or photonic crystals and in smart materials applications such as environmental, pharmaceutical, and medical sensors.
Dissertation
Syntesis of hybrid silica-organic materials for the development of electrochemical biosensing applications
Journal ArticleDOI
Kinetic approach to hyper-doped optical quality thin films
TL;DR: An alternative method of doping is presented where R6G is loaded to an evolving silica thin film and dopamine loading is markedly enhanced and doping can be carried out under relatively benign conditions.
References
More filters
Book
Advanced chemical methods for soil and clay minerals research : proceedings of the NATO Advanced Study Institute held at the University of Illinois, July 23 - August 4, 1979
J. W. Stucki,W. L. Banwart +1 more
TL;DR: In this article, the authors discuss the potential of the Mossbauer Effect and its application to Nuclei Other than Iron in the field of NMR and the application of ESR Spectroscopy to Inorganic-Clay.
Journal ArticleDOI
Advanced Chemical Methods for Soil and Clay Minerals Research
J. W. Stucki,W. L. Banwart +1 more
TL;DR: In this paper, the authors discuss the potential of the Mossbauer Effect and its application to Nuclei Other than Iron in the field of NMR and the application of ESR Spectroscopy to Inorganic-Clay.
Related Papers (5)
Organic fluorescent dyes trapped in silica and silica-titania thin films by the sol-gel method. Photophysical, film and cage properties
Optical properties of sol–gel glasses doped with organic molecules
Bruce Dunn,Jeffrey I. Zink +1 more