Production, Characterization, and Utilization of Aerosol-Deposited Sol−Gel-Derived Films

Jordan, Jeffrey M.; Dunbar, Richard A.; Hook, Daniel; Zhuang, Hengzhong; Gardella, Joseph A.; Colón, and Luis A.; Bright, Frank V.

doi:10.1021/cm970612r

Cited by 29 publications

(22 citation statements)

References 57 publications

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“…Spray coatings 120,[139][140][141][142][143] Spray coating techniques are widely used in industry for organic lacquers and are suitable for coating substrates presenting irregular/complex shapes. In this process, very fine droplets are formed from the solution using atomisers or nebulisers.…”

Section: Processing Of Hybrid Materialsmentioning

confidence: 99%

Applications of advanced hybrid organic–inorganic nanomaterials: from laboratory to market

et al. 2011

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Today cross-cutting approaches, where molecular engineering and clever processing are synergistically coupled, allow the chemist to tailor complex hybrid systems of various shapes with perfect mastery at different size scales, composition, functionality, and morphology. Hybrid materials with organic-inorganic or bio-inorganic character represent not only a new field of basic research but also, via their remarkable new properties and multifunctional nature, hybrids offer prospects for many new applications in extremely diverse fields. The description and discussion of the major applications of hybrid inorganic-organic (or biologic) materials are the major topic of this critical review. Indeed, today the very large set of accessible hybrid materials span a wide spectrum of properties which yield the emergence of innovative industrial applications in various domains such as optics, micro-electronics, transportation, health, energy, housing, and the environment among others (526 references).

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Section: Processing Of Hybrid Materialsmentioning

confidence: 99%

Applications of advanced hybrid organic–inorganic nanomaterials: from laboratory to market

et al. 2011

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“…The composite xerogel surfaces of this study are model systems for comparison of anti-fouling and fouling-release properties. The sols were spin cast onto glass microscope slides to provide thin xerogel films of reproducible thickness and uniformity (Jordan et al 1998;Pandey et al 2000).…”

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confidence: 99%

Hybrid xerogel films as novel coatings for antifouling and fouling release

et al. 2005

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Hybrid sol-gel-derived xerogel films prepared from 45/55 (mol ratio) n-propyltrimethoxysilane (C3-TMOS)/tetramethy lorthosilane (TMOS), 2/98 (mol ratio) bis [3-(trimethoxysilyl)propyl]-ethylenediamine (enTMOS)/tetraethylorthosilane (TEOS), 50/50 (mol ratio) n-octyltriethoxysilane (C8-TEOS)/TMOS, and 50/50 (mol ratio) 3,3,3-trifluoropropyltrimethox ysilane (TFP-TMOS)/TMOS were found to inhibit settlement of zoospores of the marine fouling alga Ulva (syn. Enteromorpha) relative to settlement on acid-washed glass and give greater release of settled zoospores relative to glass upon exposure to pressure from a water jet. The more hydrophobic 50/50 C8-TEOS/TMOS xerogel films had the lowest critical surface tension by comprehensive contact angle analysis and gave significantly greater release of 8-day Ulva sporeling biomass after exposure to turbulent flow generated by a flow channel than the other xerogel surfaces or glass. The 50/50 C8 TEOS/TMOS xerogel was also a fouling release surface for juveniles of the tropical barnacle Balanus amphitrite. X-ray photon electron data indicated that the alkylsilyl residues of the C3-TMOS-, C8-TEOS-, and TFP-TMOS-containing xerogels were located on the surface of the xerogel films (in a vacuum), which contributes to the film hydrophobicity. Similarly, the amine-containing silyl residues of the enTMOS/TEOS films were located at the surface of the xerogel films, which contributes to the more hydrophilic character and increased critical surface tension of these films.

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“…These include, nuclear magnetic resonance (NMR), infrared (IR), Raman, fluorescence spectroscopy, cryogenic gas adsorption analysis, thermogravimetry, viscometry, small angle x-ray scattering (SAXS) and small angle neutron scattering (SANS) 17 . Recently, advanced microscopic techniques, viz., atomic force microscopy (AFM) and scanning electron microscopy (SEM) were found to be useful to characterise the sol-gel materials [18][19][20][21] . Imaging ellipsometry is extremely useful in determining the thickness and refractive indices of from sol-gel derived thin films 22 .…”

Section: Advantages Of Sol-gel Technologymentioning

confidence: 99%

Sol-gel Technology for Sensor Applications

Chaudhury

Gupta

Gulia

2007

DSJ

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Sol-gel processes refer to the transition of predefined compositions of inorganic alkoxides precursors from liquid sol phase to solid gel phase. The phenomenon of sol-gel was known to mankind for more than 150 years. It is because of concerted efforts of researchers from multidisciplinary fields, sol-gel science transformed to technology. Several products are already commercially available for applications in optical coatings, nanocomposites, and public healthcare. Potential applications in the areas of biosensors and environmental monitoring are expected. Newer applications with nanotechnology appear too exciting. An attempt has been made to address important applications of sol-gel technology, particularly in sensing techniques from the defence perspective.Keywords: Sol-gel technology, nanomaterials, healthcare, sensors, defence applications Revised 19 November 2006 . INTRODUCTIONThe term sol-gel was first coined in the late 1800s. It generally refers to a low-temperature method using inorganic precursors that can produce ceramics and glasses with better purity and homogeneity than through high temperature conventional processes 1 . Two most attractive features of the sol-gel process are that it can produce compositions that cannot be created with conventional methods, and that the mixing level of the solution is retained in the final product, often up to the molecular scale.Sol-gel method has been successfully used to manufacture a variety of products, viz., bulk glasses 2 , optical fibers 3 , special coatings, ultra-pure powders, and multifunctional materials. Figure 1 shows different types of materials made from sol-gels. Sol-gelprocessed transparent porous matrix offers the possibility of doping various organic and inorganic molecules [5][6][7][8] . Sol-gel process has been used to Defence Science Journal, Vol. 57, No. 3, May 2007, pp. 241-253 © 2007 241 REVIEW PAPERfabricate materials which can be used as new laser materials, nanocomposites, biomimetic systems, and so on. Because of potential in fabrication of a wide variety of new materials, understanding of sol-gel processes has become the centre of interdisciplinery research, viz., physics, chemistry, biology, biotechnology, biochemistry, electronics, and related engineering branches. Sol-gel materials have a wide range of applications, from environmental monitoring, biosensors for healthcare, to nanotechnology for sensing clinically-important analytes. . BASICS OF SOL-GEL PROCESSThe sol-gel process is a versatile technique which involves the transition of a predefined composition from liquid sol (mostly colloidal) phase into a solid gel phase 9 . Sol-gel processing involves the hydrolysis of a metal alkoxide followed by condensation and polymerisation reactions, leading to the sol-gel state.242 DEF SCI J, VOL. 57, NO. 3, MAY 2007 These general reactions are shown below:Metal alkoxides are most popular because these react readily with water. The most widely used metal alkoxides are the alkoxysilanes, such as tetramethoxysilane (TMOS) a...

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Production, Characterization, and Utilization of Aerosol-Deposited Sol−Gel-Derived Films

Cited by 29 publications

References 57 publications

Applications of advanced hybrid organic–inorganic nanomaterials: from laboratory to market

Applications of advanced hybrid organic–inorganic nanomaterials: from laboratory to market

Hybrid xerogel films as novel coatings for antifouling and fouling release

Sol-gel Technology for Sensor Applications

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