Synthesis and solid- and liquid-state characterization of a hexameric cluster of titanium(IV): Ti6(.mu.2-O)2(.mu.3-O)2(.mu.2-OC4H9)2(OC4H9)6(OCOCH3)8

Dœuff, S.; Dromzée, Yves; Taulèlle, Francis; Sanchez, Corinne

doi:10.1021/ic00324a006

Cited by 166 publications

(119 citation statements)

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“…[10][11][12][13] Because of their rich and versatile chemistry, titanium-oxo clusters have been extensively investigated by several research groups [14][15][16][17][18] including the Wien [19][20][21][22][23][24][25] and Paris [26][27][28][29][30][31][32][33][34][35][36][37][38][39] groups. Different approaches are usually applied to create functional building blocks for further hybrid material elaboration.…”

Section: Introductionmentioning

confidence: 99%

Ti₈O₈(OOCR)₁₆, a New Family of Titanium–Oxo Clusters: Potential NBUs for Reticular Chemistry

et al. 2010

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The reactions of titanium alkoxides with a large excess of different carboxylic acids under nonhydrolytic conditions leads to the reproducible formation of well‐defined nano‐building units (NBUs) with the formula [Ti8O8(OOCR)16] [R = C6H5, C(CH3)3, CH3]. The structures of these titanium–oxo–carboxylate clusters have been determined by crossingdifferent characterization techniques and methodologies (single‐crystal X‐ray diffraction, 13C and 1H NMR spectroscopy, and FTIR spectroscopy). These NBUs are obtained in high yields and, since all the alkoxo ligands have been removed by using solvothermal‐synthesis conditions, they present better stability upon hydrolysis than the often reported alkoxo–carboxylate–titanium–oxo clusters [TinO2n–x/2–y/2(OR′)x(OOCR)y] (n ≥ 2; x ≥ 1; y ≥ 1). In addition, the solubility and transferability of these clusters in common solvents can be tuned by selecting the nature of the organic ligand. Moreover, we also report for the first time, a robust post‐modification of the carboxylate ligands by transesterification reactions on the titanium–oxo clusters. These reactions keep the integrity of the octameric titanium–oxo core intact, while completely exchanging the organic shell of the cluster. This family of [Ti8O8(OOCR)16] clusters, which present 16 points of extension, a symmetric shape, and the ability to be post‐modified with conservation of the core structure, can therefore be considered as interesting NBUs to form new metal–organic frameworks.

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Section: Introductionmentioning

confidence: 99%

Ti₈O₈(OOCR)₁₆, a New Family of Titanium–Oxo Clusters: Potential NBUs for Reticular Chemistry

et al. 2010

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“…We have investigated the influence of the reaction temperature in the range 100-180 8C and found that highly crystalline TiO 2 nanoparticles and nanorods could only be obtained at temperatures higher than 120 8C, although Ti(OBu) 4 can react with LA to form Ti(OBu) 4Àx (C 17 H 31 CO 2 ) x at a rather low temperature. [6,7,23,25,29] We carried out the solvothermal reaction at 100 8C, but no TiO 2 could be deposited by alcohol and neither nanoparticles nor nanorods were observed by TEM. However, when the reaction temperature was higher than 120 8C, highly crystalline, near monodisperse and organic-solvent-dispersible TiO 2 nanoparticles were obtained.…”

Section: Introductionmentioning

confidence: 99%

Near Monodisperse TiO₂ Nanoparticles and Nanorods

Peng

et al. 2006

Chemistry A European J

175

139

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Highly crystalline, near monodisperse TiO2 nanoparticles, nanorods and their metal-ion-doped (Sn4+, Fe3+, Co2+, and Ni2+, etc.) derivatives have been prepared by well-controlled solvothermal reactions. Through adjusting the reaction parameters, such as reaction temperature, duration, and concentration of the reactants, the size, shape, and dispersibility of the products can be controlled. A possible reaction mechanism can be proposed based on experimental evidence.

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“…The rate of these two processes dramatically affects the shape of the final NC products. In the presence of both water and carboxylic acid, titanium alkoxide can readily react with water or acid (Doeuff et al, 1989;Cozzoli et al, 2003) to form hydroxyalkoxide or carboxyalkoxide, respectively. Subsequently, the reaction between these precursors via a hydrolytic condensation or a nonhydrolytic condensation process produces extensive Ti-O-Ti networks.…”

Section: Resultsmentioning

confidence: 99%

A solvothermal single‐step route towards shape‐controlled titanium dioxide nanocrystals

et al. 2011

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A versatile synthetic method which is based on a solvothermal technique for the fabrication of highly crystalline TiO 2 nanocrystals (NC) exhibiting different shapes such as rhombic, truncated rhombic, spherical, dog-bone, truncated, and elongated rhombic is reported. The dominant features of the present approach are first the use of water vapor as hydrolysis agent to accelerate the reaction, and second, the use of both oleic acid (OA) and oleylamine (OM) as two distinct capping surfactants having different binding strengths for the control of the growth of the TiO 2 nanoparticles. It is shown that the presence of an appropriate amount of water vapor along with the desired OA/OM molar ratio plays a crucial role in controlling size and shape of TiO 2 NCs. Moreover, it is also established that the thus-obtained TiO 2 NCs are excellent support for the synthesis of composite metal/TiO 2 photocatalysts in which metal clusters are uniformly deposited on the surface of each individual TiO 2 NC.

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Synthesis and solid- and liquid-state characterization of a hexameric cluster of titanium(IV): Ti6(.mu.2-O)2(.mu.3-O)2(.mu.2-OC4H9)2(OC4H9)6(OCOCH3)8

Cited by 166 publications

References 1 publication

Ti₈O₈(OOCR)₁₆, a New Family of Titanium–Oxo Clusters: Potential NBUs for Reticular Chemistry

Ti₈O₈(OOCR)₁₆, a New Family of Titanium–Oxo Clusters: Potential NBUs for Reticular Chemistry

Near Monodisperse TiO₂ Nanoparticles and Nanorods

A solvothermal single‐step route towards shape‐controlled titanium dioxide nanocrystals

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Synthesis and solid- and liquid-state characterization of a hexameric cluster of titanium(IV): Ti6(.mu.2-O)2(.mu.3-O)2(.mu.2-OC4H9)2(OC4H9)6(OCOCH3)8

Cited by 166 publications

References 1 publication

Ti8O8(OOCR)16, a New Family of Titanium–Oxo Clusters: Potential NBUs for Reticular Chemistry

Ti8O8(OOCR)16, a New Family of Titanium–Oxo Clusters: Potential NBUs for Reticular Chemistry

Near Monodisperse TiO2 Nanoparticles and Nanorods

A solvothermal single‐step route towards shape‐controlled titanium dioxide nanocrystals

Contact Info

Product

Resources

About

Ti₈O₈(OOCR)₁₆, a New Family of Titanium–Oxo Clusters: Potential NBUs for Reticular Chemistry

Ti₈O₈(OOCR)₁₆, a New Family of Titanium–Oxo Clusters: Potential NBUs for Reticular Chemistry

Near Monodisperse TiO₂ Nanoparticles and Nanorods