Photoluminescence of Tris(2,2'-bipyridine)ruthenium(II) Ions Intercalated in Layered Niobates and Titanates: Effect of Interlayer Structure on Host-Guest and Guest-Guest Interactions

Nakato, Teruyuki; Kusunoki, Kazuhiko; Yoshizawa, Katsuaki; Kuroda, Kazuyuki; Kaneko, Masao

doi:10.1021/j100051a015

Cited by 81 publications

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“…On the basis of the observed C, H and N distribution of 10.30%, 2.38% and 2.17% of the hybrid powders, respectively, the composition formula for CoTMPyP-Ti 4 O 9 hybrid could be assigned as (CoTMPyP) 0.09 H 1.64 Ti 4 O 9 ·3.1H 2 O. The area of the host layer surface per charge is 0.113 nm 2 , so the projected area of each CoTMPyP ion can be calculated as 0.113 × 2 / 0.09 = 2.51 nm 2 [25]. The distance between the adjacent Co centers was calculated as 1.58 nm.…”

Section: Resultsmentioning

confidence: 99%

A nanostructured hybrid synthesized by the intercalation of CoTMPyP into layered titanate: Direct electrochemistry and electrocatalysis

Liu

Shao

et al. 2012

Electrochemistry Communications

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Section: Resultsmentioning

confidence: 99%

A nanostructured hybrid synthesized by the intercalation of CoTMPyP into layered titanate: Direct electrochemistry and electrocatalysis

Liu

Shao

et al. 2012

Electrochemistry Communications

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“…3) Another type of photochemical events has been reported for intercalation compounds of the layered niobates and titanates with dyes, where the photoprocesses can be initiated by photoexcitation of the intercalated dye molecules with visible light. Photoinduced electron/energy transfer from the intercalated dye species to the oxide layers has been achieved in the intercalation compounds or structurally compatible layer-bylayer assemblies of the semiconducting oxides with a ruthenium complex, 14) 16) porphyrin, 17),18) cyanine 19) and rhodamine dyes, 20) and polyaniline. 21) These studies provide important basis of photosensitizing the semiconducting layers required for effective utilization of solar energy, and thus, one can construct multicomponent systems for visible-light-induced electron transfer, which is a key process of artificial photosynthesis, by combining an electron acceptor and photosensitizer with the layered niobates and titanates.…”

Section: Introductionmentioning

confidence: 99%

Visible-light-induced electron transfer in intercalation-type composites organized on photocatalytically active layered niobate

Nakato¹,

Kamase²,

Shinozaki³

2011

J. Ceram. Soc. Japan

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We prepared multicomponent composites of layered hexaniobate, a photocatalytically active layered semiconductor, with cationic organic species of methylviologen as an electron acceptor, proflavine as a photosensitizing dye, and triethanolammonium as a sacrificial donor. Two types of composites with different location of methylviologen, which was incorporated in the interlayer spaces or adsorbed on the external surfaces, were obtained. Visible light irradiation caused photoreduction of methylviologen in the composites, which was ascribed to the photoinduced electron transfer initiated by the photoexcitation of the proflavine dye. The location of methylviologen affected aggregation of the photoreduced methylviologen. A mixture of the three organic species without the niobate did not cause the reduction of viologen but self-decomposition of the proflavine dye under the same irradiation conditions, which indicated that the semiconducting niobate layers were indispensible for transferring electrons from the photoexcited dye to the acceptor.

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“…These titanates exhibit diverse potential application associated with their high ion exchange ability. Thus, they are used for the host materials to intermediate organic guest molecules [6][7][8], to fabricate porous materials [9,10] and to fix the radioactive metal ions [11,12]. Several non alkali metal members are also prepared by ion exchange reactions [13].…”

Section: Introductionmentioning

confidence: 99%

Bulk ac conductivity studies of lithium substituted layered sodium trititanates (Na2Ti3O7)

Pal¹,

Pal²,

Pandey

et al. 2010

J Mater Sci: Mater Electron

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Lithium mixed sodium tntltanates with 0.3, 0.5 and 1.0 M percentage of Li z C0 3 (general formula Naz-xLixTi 3 0 7 ) have prepared by a high temperature solid-state reaction route. EPR analysis, high temperature range (473-773 K) and variable frequency range (100 Hz-1 MHz) ac conductivity measurements were carried out on prepared sample. The lithium ions are accommodated with the sodium ions in the interlayer space. The EPR specta of lithium mixed sodium Trititanates confirm the partial reduction of Ti 4 + ions to Ti 3 +. Four distinct regions have identified in the LnaT versus 1,0001T plots. Various conduction mechanisms which dependence on concentration, frequency and temperature are reported in this paper for lithium mixed layered sodium Trititanates. The dilation of interlayer space has further been proposed to occur due to inclusion of lithium ions in the interlayer space. The conductivity increases as the concentration of lithium increases. The increase of ionic conductivity in these compounds is due to accommodation of lithium ions with sodium ions in interlayer space.

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Photoluminescence of Tris(2,2'-bipyridine)ruthenium(II) Ions Intercalated in Layered Niobates and Titanates: Effect of Interlayer Structure on Host-Guest and Guest-Guest Interactions

Cited by 81 publications

References 0 publications

A nanostructured hybrid synthesized by the intercalation of CoTMPyP into layered titanate: Direct electrochemistry and electrocatalysis

A nanostructured hybrid synthesized by the intercalation of CoTMPyP into layered titanate: Direct electrochemistry and electrocatalysis

Visible-light-induced electron transfer in intercalation-type composites organized on photocatalytically active layered niobate

Bulk ac conductivity studies of lithium substituted layered sodium trititanates (Na2Ti3O7)

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