Visible-light sensitization

Wu J, Ye Z, Wang G, Jin D, Yuan J, Guan Y, Piper J (2009) Visible-light-sensitized highly luminescent europium nanoparticles preparation and application for time-gated luminescence bioimaging. J Mater Chem 19 1258-1264... [Pg.225]

Multifunctional photoinitiators, (II), were prepared by Sommerlade et al. (2) for radiation-curable dental compositions using UV light. A Norrish Type visible-light-sensitive multifunctional ketopinic amide derivative attached to a modified amino-silanated resin, (III), was prepared by Condon et al. (3) and used as a macroinitiator in dental applications. [Pg.424]

The author wishes to thank Prof. Akihiko Kudo at the Science University of Tokyo for fruitful discussions about visible light-sensitive photocatalysts. Author... [Pg.117]

It is known that cadmium sulfide (CdS) and ion oxide Te203) are visible light-sensitive materials, in particular, one-step photocata ysis of wate - is possible for CdS.25) Recently, Kudc et at. reported that bismuth vanadate (BiV04) snowed photocatalytic activity for 02 evolution from an aqueous silver nitrate solution under visible light.26 271 BiVCX is a very attractive photocatalyst although it is impossible to decompose water by a one-step process. Thus this material is a candidate for an 02 evolution photocatalyst to construct a two-phoion process 26) In other words, this material is expected to be an 02 evolution photocatalyst to... [Pg.290]

Dung DH, Serpone N, Gratzel M (1984) Integrated systems for water cleavage by visible-light - sensitization of TiCL particles by surface derivatization with ruthenium complexes. Helv Chim Acta 67 1012-1018... [Pg.216]

Houlding VH, Gratzel M (1983) Photochemical H2 generation by visible-light -sensitization of TO2 particles by surface complexation with 8-hydroxyquinoline. J Am Chem Soc 105 5695-5696... [Pg.216]

Dyes such as erythrosin B [172], eosin [173-177], rose bengal [178,179], rhodamines [180-185], cresyl violet [186-191], thionine [192], chlorophyll a and b [193-198], chlorophyllin [197,199], anthracene-9-carboxylate [200,201], perylene [202,203] 8-hydroxyquinoline [204], porphyrins [205], phthalocyanines [206,207], transition metal cyanides [208,209], Ru(bpy)32+ and its analogs [83,170,210-218], cyanines [169,219-226], squaraines [55,227-230], and phe-nylfluorone [231] which have high extinction coefficients in the visible, are often employed to extend the photoresponse of the semiconductor in photoelectro-chemical systems. Visible light sensitization of platinized Ti02 photocatalyst by surface-coated polymers derivatized with ruthenium tris(bipyridyl) complex has also been attempted [232,233]. Because the singlet excited state of these dyes is short lived it becomes essential to adsorb them on the semiconductor surface with... [Pg.319]

Vrachnou, E. Vlachopoulos, N. Graetzel, M. Efficient visible light sensitization of Ti02 by surface complexation with Fe(CN) , J. Chem. Soc., Chem. Commun. 1987, 868. [Pg.346]

Nakahira, T. Graetzel, M. Visible light sensitization of platinized T102 photocatalyst by surface-adsorbed poly(4-vinylpyridine) derivatized with ruthenium trisbipyridyl complex, Makromol. Chem., Rapid Commun. 1985, 6, 341. [Pg.347]

EFFICIENT VISIBLE LIGHT SENSITIZATION OF TiO BY SURFACE COMPLEXATION WITH TRANSITION METAL... [Pg.57]

Ion-implanted nanocomposite photocatalysts has been recently developed by Anpo and coworkers (1998 2000) for the synthesis of visible-light-sensitive photocatalysts. The key component of this system is the ion implanter, a typical setup of which is shown in Fig. 18.17. It consists of a metal ion source, a mass analyzer, and a high-voltage ion accelerator. The metal ions from the source are accelerated in... [Pg.498]

Carbon-Doped Anatase Ti02 Powders as a Visible-Light Sensitive Photocatalyst Oxidative annealing of TiC used to afford yellow doped powders. Study focus as in Entry 5. 310... [Pg.188]

Finally, some of the studies considered in Table 7 (Entries 11 and 13) buck the trend mentioned earlier that few of the studies on transition-metal doped TiCE are oriented toward the water-photosplitting application. These new studies exploit the visible light sensitization of the doped host material as well as the improved electronic characteristics observed in some cases (particularly the co-doped instance) to enhance the efficiency of the water photosplitting process. [Pg.190]

Positive Photoresists. Positive resists are entirely different from negative resists. For the purposes of this discussion we restrict ourselves to visible-light-sensitive materials. Typically, these materials are mixtures of low-molecular-weight phenol-formaldehyde polymers and derivatives of naphtho-1,2-quinone diazide, the photosensitive component. The former is soluble in aqueous alkali, but the presence of the latter, a hydrophobic species, inhibits attack of this developer on the film. On irradiation the "sensitizer" is converted to a ketene, which, after reaction with water, forms a base-soluble carboxylic acid. Thus the irradiated part of the film is rendered soluble in the developer and it can be removed selectively. The important feature of this system is that the unirradiated areas are not swollen by the developer and the resolution of this material is quite high. It is possible to prepare gratings having several... [Pg.267]

Yan, X. Ohno, T. Nishijima, K. Abe, R. Ohtani, B. Chem. Phys. Lett. 2006, 429, 606 This paper claimed inappropriate use of organic dyes as test compounds for visible light-sensitive photocatalysts. Citation of this paper was not expected at all, since the authors using methylene blue (MB) as a model compound for photocatalytic reaction never want to refer to this and, on the other hand, those who do not use MB need not to refer to this. However, there has been an appreciable number of citations and, to the author s surprise, approximately half of the citations of this paper were for reasonable use of MB, indicating that authors of those papers did not read the paper. [Pg.429]

Visible Light Sensitization by Adsorption of Organic and Inorganic Dyes... [Pg.760]

More recently, visible light sensitization has been shown to be possible by doping with small quantities of C [44-47], N [48-50], F [51, 52], S [53, 54], and to a lesser... [Pg.760]

Visible Light Sensitization by Metal Ion Implantation Techniques... [Pg.761]

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