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Author: Hiroyuki Inoue
Publisher:
ISBN:
Category :
Languages : en
Pages : 4
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Book Description
Recently the sol-gel process for preparing amorphous materials has been studied. The low processing temperatures enable us to dope the gel with functional organic molecules. Such molecules have poor thermal stability and cannot be included in traditional oxide glasses. Avnir et al. have been reported the preparation and optical properties of amorphous silica doped with rhodamine 6G and pyrene. Makishima and Tani have doped one with 1,4dihydr-oxy-9,10-anthraquinone (DAQ) and showed photochemical hole burning (PHB) at 4.8 K. They have also demonstrated that other organic molecules can be successfully incorporated into sol-gel matrices. The number of potential applications of such materials is expected to be substantial. Although materials have been synthesized, little is known about the structure of sol-gel matrix and the interaction between the molecule and the matrix. PHB has attracted considerable interest as a tool for high-resolution solid state spectroscopy. The sol-gel thin film is expected to possess several advantages over gel bulks. Several studies suggest the differences of the structure and properties between bulks and thin films. However, due to the thickness, there have been rather few investigations attempting to obtain structural information directly. Recently the use of organic molecule appears to be one approach for supplying new insights regarding the chemistry of sol-gel materials. In this point of view PHB is expected to be high potential. We report here the preparation of sol-gel thin films doped with the porphine derivative and its application to PHB.
Author: Hiroyuki Inoue
Publisher:
ISBN:
Category :
Languages : en
Pages : 4
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Book Description
Recently the sol-gel process for preparing amorphous materials has been studied. The low processing temperatures enable us to dope the gel with functional organic molecules. Such molecules have poor thermal stability and cannot be included in traditional oxide glasses. Avnir et al. have been reported the preparation and optical properties of amorphous silica doped with rhodamine 6G and pyrene. Makishima and Tani have doped one with 1,4dihydr-oxy-9,10-anthraquinone (DAQ) and showed photochemical hole burning (PHB) at 4.8 K. They have also demonstrated that other organic molecules can be successfully incorporated into sol-gel matrices. The number of potential applications of such materials is expected to be substantial. Although materials have been synthesized, little is known about the structure of sol-gel matrix and the interaction between the molecule and the matrix. PHB has attracted considerable interest as a tool for high-resolution solid state spectroscopy. The sol-gel thin film is expected to possess several advantages over gel bulks. Several studies suggest the differences of the structure and properties between bulks and thin films. However, due to the thickness, there have been rather few investigations attempting to obtain structural information directly. Recently the use of organic molecule appears to be one approach for supplying new insights regarding the chemistry of sol-gel materials. In this point of view PHB is expected to be high potential. We report here the preparation of sol-gel thin films doped with the porphine derivative and its application to PHB.
Author: Sumio Sakka
Publisher: Springer Science & Business Media
ISBN: 9781402079665
Category : Science
Languages : en
Pages : 716
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Book Description
Since Dr. Disiich of Germany prepared a glass lens by the sol-gel method around 1970, sol-gel science and technology has continued to develop. Since then this field has seen remarkable technical developments as well as a broadening of the applications of sol-gel science and technology. There is a growing need for a comprehensive reference that treats both the fundamentals and the applications, and this is the aim of "Handbook of Sol-Gel Science and Technology."The primary purpose of sol-gel science and technology is to produce materials, active and non-active including optical, electronic, chemical, sensor, bio- and structural materials. This means that sol-gel science and technology is related to all kinds of manufacturing industries. Thus Volume 1, "Sol-Gel Processing," is devoted to general aspects of processing. Newly developed materials such as organic-inorganic hybrids, photonic crystals, ferroelectric coatings, photocatalysts will be covered. Topics in this volume include: Volume 2, "Characterization of Sol-Gel Materials and Products, "highlights the important fact that useful materials are only produced when characterization is tied to processing. Furthermore, characterization is essential to the understanding of nanostructured materials, and sol-gel technology is a most important technology in this new field. Since nanomaterials display their functional property based on their nano- and micro-structure, "characterization" is very important. Topics found in Volume 2 include: Sol-gel technology is a versatile technology, making it possible to produce a wide variety of materials and to provide existing substances with novel properties. This technology was applied to producingnovel materials, for example organic-inorganic hybrids, which are quite difficult to make by other fabricating techniques, and it was also applied to producing materials based on high temperature superconducting oxides. "Applications of Sol-Gel Technology," (Volume 3), will cover applications such as:
Author: Renata Reisfeld
Publisher: Springer Verlag
ISBN: 9780387543741
Category : Technology & Engineering
Languages : en
Pages : 265
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Book Description
1. R.C. Mehrotra, Jaipur, India Present Status and Future Potential of the Sol-Gel Process 2. J. Fricke, A. Emmerling, Wuerzburg, FRG Aerogels - Preparation, Properties, Applications 3. S. Sakka, T. Yoko, Kyoto, Japan Sol-Gel-Derived Coating Films and Applications 4. H. Schmidt, Saarbruecken, FRG Thin Films, the Chemical Processing up to Gelation 5. M. Henry, J.P. Jolivet, J. Livage, Paris, France Aqueous Chemistry of Metal Cations: Hydrolysis, Condensation and Complexation 6. R. Reisfeld, Jerusalem, Israel, C.K. Joergensen, Geneva, Switzerland Optical Properties of Colorants or Luminescent Species in Sol-Gel Glasses.
Author: Lisa C. Klein
Publisher: William Andrew Publishing
ISBN: 9780815511540
Category : Technology & Engineering
Languages : en
Pages : 407
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Book Description
Covers principles, developments, and applications of sol-gel technology for thin films, fibers, preforms, electronics, and specialty shapes.
Author: Lisa Klein
Publisher: Springer Nature
ISBN: 3319321013
Category : Technology & Engineering
Languages : en
Pages : 3755
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Book Description
This completely updated and expanded second edition stands as a comprehensive knowledgebase on both the fundamentals and applications of this important materials processing method. The diverse, international team of contributing authors of this reference clarify in extensive detail properties and applications of sol-gel science and technology as it pertains to the production of substances, active and non-active, including optical, electronic, chemical, sensor, bio- and structural materials. Essential to a wide range of manufacturing industries, the compilation divides into the three complementary sections: Sol-Gel Processing, devoted to general aspects of processing and recently developed materials such as organic-inorganic hybrids, photonic crystals, ferroelectric coatings, and photocatalysts; Characterization of Sol-Gel Materials and Products, presenting contributions that highlight the notion that useful materials are only produced when characterization is tied to processing, such as determination of structure by NMR, in-situ characterization of the sol-gel reaction process, determination of microstructure of oxide gels, characterization of porous structure of gels by the surface measurements, and characterization of organic-inorganic hybrid; and Applications of Sol-Gel Technology, covering applications such as the sol-gel method used in processing of bulk silica glasses, bulk porous gels prepared by sol-gel method, application of sol-gel method to fabrication of glass and ceramic fibers, reflective and antireflective coating films, application of sol-gel method to formation of photocatalytic coating films, and application of sol-gel method to bioactive coating films. The comprehensive scope and integrated treatment of topics make this reference volume ideal for R&D scientists and engineers across a wide range of disciplines and professional interests.
Author: Ichiro Okura
Publisher: CRC Press
ISBN: 1351590553
Category : Medical
Languages : en
Pages : 252
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Book Description
Photosensitization of Porphyrins and Phthalocyanines covers the scentific background to porphyrins and phthalocyanines, and applications of the compounds, especially for the application for photosensitization. It also has a review of advances in research and applications in this field.
Author: Dawei Liu
Publisher:
ISBN:
Category :
Languages : en
Pages : 114
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Book Description
Author: Margaret Irene Steinhauser
Publisher:
ISBN:
Category :
Languages : en
Pages : 234
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Book Description
Author: Duangsamorn Charoenkul
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Karl Kadish
Publisher: Elsevier
ISBN: 9780123932204
Category : Science
Languages : en
Pages : 332
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Book Description
The Porphyrin Handbook, Volume 16: Phthalocyanines: Spectroscopic and Electrochemical Characterization provides information pertinent to every aspect of the chemistry, synthesis, spectroscopy, and structure of phthalocyanines. This book examines the biology and medical implications of porphyrin systems. Organized into five chapters, this volume begins with an overview of the photophysical properties of phthalocyanines that are important in relation to photosensitizers in photodynamic therapy, photoconductor, solar cells, and artificial photosynthesis. This text then describe how the data obtained from magnetic circular dichroism spectroscopy has provided the critical information required to describe the excited and ground state degeneracies of main group metallophthalocyanines complexes. Other chapters consider the electrocatalysis by electrodes modified with phthalocyanine sensors and complexes. This book discusses as well the properties of phthalocyanines and of their complexes. The final chapter deals with the experiments with organic pigment thin films. This book is a valuable resource for research scientists, engineers, and clinicians.
