Preparation and thin-layer chromatography of cis-dicyanobis(2,2'-bipyridine)ruthenium(II)

Demas, J. N.; Turner, Thomas F.; Crosby, G. A.

doi:10.1021/ic50073a052

Cited by 54 publications

(31 citation statements)

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“…The Ru͑II͒ complexes cis-Ru͑bpy͒ 2 ͑CN͒ 2 , which has been used for quenching the PL of the PSi, was synthesized according to the documented literature. 35 …”

Section: The Vapor-phase Silanizationmentioning

confidence: 99%

Vapor-phase silanization of oxidized porous silicon for stabilizing composition and photoluminescence

Zhu

et al. 2009

Journal of Applied Physics

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A vapor-phase deposition approach to the silanization modification of the oxidized porous silicon ͑PSi͒ surface using ͑CH 3 O͒ 3 Si͑CH 2 ͒ 3 NH 2 has been exploited. Standard clean ͑SC͒-1 ͑NH 3 H 2 O / H 2 O 2 / H 2 O, 1:1:5,v/ v͒ and SC-2 ͓HCl/ H 2 O 2 / H 2 O ͑1:1:6,v/ v͔͒ solutions are utilized for the first time to obtain oxidized PSi and have been proved to be a very efficient combination for creating Si-OH species on the PSi surface. After the modification, an amine group terminated surface was successfully created as demonstrated by the contact angle with water, the x-ray photoelectron spectroscopy, and the Fourier transform infrared ͑FTIR͒ spectra. The influences of the surface derivatives on the composition stability of the PSi layer and on its photoluminescence properties were investigated by means of FTIR spectra, photoluminescence spectra, and time-resolved photoluminescence measurements.

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“…The Ru͑II͒ complexes cis-Ru͑bpy͒ 2 ͑CN͒ 2 , which has been used for quenching the PL of the PSi, was synthesized according to the documented literature. 35 …”

Section: The Vapor-phase Silanizationmentioning

confidence: 99%

Vapor-phase silanization of oxidized porous silicon for stabilizing composition and photoluminescence

Zhu

et al. 2009

Journal of Applied Physics

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“…To prepare the dye [13][14][15][16], Ru(dcbH2)2C12 (0.2 g, 0.3 mmol) was dissolved in 10 ml of water adjusted to pH 7 by the addition of NaOH. The symbols (dcbH 2) and (bpy) represent the 2,2'bipyridil-4,4'dicarboxylic acid and the 2,2'bipyridil ligands, respectively.…”

Section: Ru Trinuclear Dye Anionic Formmentioning

confidence: 99%

“…The symbols (dcbH 2) and (bpy) represent the 2,2'bipyridil-4,4'dicarboxylic acid and the 2,2'bipyridil ligands, respectively. This solution was slowly added to a 120 ml boiling solution of Ru(bpy)2CN 2 (1.4 g, 3 mmol) [15] in methanol. The mixture was refluxed for 18 h.…”

Section: Ru Trinuclear Dye Anionic Formmentioning

confidence: 99%

Testing of dye sensitized TiO2 solar cells I: Experimental photocurrent output and conversion efficiencies

Smestad

Bignozzi²,

Argazzi³

1994

Solar Energy Materials and Solar Cells

321

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Recently, a paper was published by the Lausanne Group headed by Dr. M. Graetzel which reported a simple low cost 7% efficient photo electrochemical solar cell made from a trinuclear Ru dye complex adsorbed on the very rough surface of a colloidal TiO 2 film. In the current paper, a verification of this result is presented using procedures described in the literature. Measurements are reported in simulated and natural sunlight which confirm that the efficiency is indeed in the range previously reported. Predicted Air Mass 1.5 photo currents are compared to those obtained from fabricated dye sensitized cells. Although current densities of 12 mA/cm 2 and voltages of over 0.6 V are measured, it is found that corresponding fill factors, less than 0.6, limit the performance of the cell under solar illumination. The basic economics of such a device are outlined and it is proposed that cell costs of $ 0.6 per peak watt could be possible if the longevity of the cell is at least 15 years.

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“…The Ru complexes were prepared according to [62]. [Ru(phen),(CN)J [63] were prepared coulometrically using a Hg working electrode, a Pt wire as auxiliary electrode, and a SCE as reference. The s o h .…”

Section: Experimental Partmentioning

confidence: 99%

Photogeneration of Carbon Monoxide and of Hydrogen via Simultaneous Photochemical Reduction of Carbon Dioxide and Water by Visible‐Light Irradiation of Organic Solutions Containing Tris(2,2′‐bipyridine)ruthenium(II) and Cobalt(II) Species as Homogeneous Catalysts

Ziessel¹,

Hawecker²,

Lehn³

1986

Helvetica Chimica Acta

147

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CO and H, are photogenerated simultaneously by visible-light irradiation of systems containing a photosensitizer, the [R~(bpy)~],+ complex, C o ( f f ) species as homogeneous catalysts, which mediate COz and H,O reduction by intermediate formation of Co(l), a tertiary amine as electron donor, which provides the electrons for the reduction, and an organic solvent which also facilitates dissolution of CO,. The efficiency of (CO + H,) gas production and the selectivity CO/H, markedly depend upon the composition of the medium, the nature of the tertiary amine, the solvent, and the ligand of the Co ions. 2,9-Dimethyl-l, 10-phenanthroline is particularly effective in promoting CO and H, formation, giving a quantum yield of 7.7% in (CO + H2) (1.2% for CO and 6.5% for H,). The process consists of two catalytic cycles: a photocatalytic cycle for the Ru complex and a double dark reaction pathway for the Co species; oxidative and/or reductive quenching of the excited state of the photosensitizer lead to the formation of Co (1) Over the last years, we have described three homogeneous catalytic systems which perform photochemical CO, reduction [7]: the first allows the simultaneous reduction of CO, and H,O into CO and H,, respectively, based on [Ru(bpy),]CI, (bpy = 2,2'-bipyridine) as photosensitizer and Co(1l) ions or Co(1I) complexes as catalyst [8], the second is highly efficient and selective for the reduction of CO, into CO and based on a single complex,fuc-[Re(bpy)(CO),]X (X = C1, Br) acting both as photosensitizer and as catalyst [9], and the third, based on Ru complexes, performs the photochemical reduction of CO, to formate [lo]. In our initial reports [8] [9], we described the simultaneous photo-

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Preparation and thin-layer chromatography of cis-dicyanobis(2,2'-bipyridine)ruthenium(II)

Cited by 54 publications

References 0 publications

Vapor-phase silanization of oxidized porous silicon for stabilizing composition and photoluminescence

Vapor-phase silanization of oxidized porous silicon for stabilizing composition and photoluminescence

Testing of dye sensitized TiO2 solar cells I: Experimental photocurrent output and conversion efficiencies

Photogeneration of Carbon Monoxide and of Hydrogen via Simultaneous Photochemical Reduction of Carbon Dioxide and Water by Visible‐Light Irradiation of Organic Solutions Containing Tris(2,2′‐bipyridine)ruthenium(II) and Cobalt(II) Species as Homogeneous Catalysts

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