Hydrolytic synthesis and structural characterization of lanthanide-acetylacetonato/hydroxo cluster complexes - A systematic study

Lanthanide hydroxide cluster complexes with acetylacetonate were synthesized by the hydrolysis of the corresponding hydrated lanthanide acetylacetonates in methanol in the presence of triethylamine. Polymeric lanthanide hydroxide complexes based on diamond-shaped dinuclear repeating units of [Ln(2)(CH(3)CO(3))(2)](4+) (Ln = La, Pr) and discrete complexes featuring a tetranuclear distorted cubane core of [Ln(4)(mu(3)-OH)(2)(mu(3)-OCH(3))(2)](8+) (Ln = Nd, Sm) and a nonanuclear core of [Ln(9)(mu(4)-O)(mu(4)-OH)(mu(3)-OH)(8)](16+) (Ln = Eu-Dy, Er, Yb) were obtained. The dependence of the cluster nuclearity on the identity of the lanthanide ion is rationalized in terms of the influences of a metal ion's Lewis acidity and the sterics about the Ln-OH unit on the kinetics of the assembly process that leads to a particular cluster.U.S. NSF[CHE-0238790

Diameter-dependent, progressive alkylcarboxylation of single-walled carbon nanotubes

We demonstrate diameter-dependent, progressive alkylcarboxylation of single-walled carbon nanotubes by recycling a modified Billups-Birch reaction. The strong diameter dependence was confirmed by Raman spectroscopy. Alkylcarboxylation made SWNTs soluble in water, allowing the more readily functionalized, smaller diameter nanotubes to be enriched by water extraction.University of Maryland; ACS; Maryland Department of Business and Economic Development; State Scholarship Council of China; Department of Energy Office; FPNSFC[2009J05034

Butylphenyl-functionalized palladium nanoparticles as effective catalysts for the electrooxidation of formic acid

Monodisperse butylphenyl-functionalized palladium (Pd-BP, dia. 2.24 nm) nanoparticles were synthesized through co-reduction of butylphenyldiazonium and H(2)PdCl(4) by NaBH(4). Because of this unique surface functionalization and a high specific electro-chemical surface area (122 m(2) g(-1)), the Pd-BP nanoparticles exhibited a mass activity similar to 4.5 times that of commercial Pd black for HCOOH electrooxidation.National Science Foundation[CHE-0832605, CHE-1012258

A General Route to Diverse Mesoporous Metal Oxide Submicrospheres with Highly Crystalline Frameworks

通讯作者地址: Wang, JF (通讯作者), Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong Peoples R China 地址: 1. Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong Peoples R China 2. Univ Calif Santa Barbara, Dept Chem & Biochem, Santa Barbara, CA 93106 USA 电子邮件地址: [email protected], [email protected] NSF 0233728 NASA URETI NCC-1-02037 HK RGC Research 2060332 NSFC/RGC joint Research Scheme N_CUHK448/06 290031

A general synthetic strategy for oxide-supported metal nanoparticle catalysts

通讯作者地址: Stucky, GD (通讯作者), Univ Calif Santa Barbara, Dept Chem & Biochem, Santa Barbara, CA 93106 USA 地址: 1. Univ Calif Santa Barbara, Dept Chem & Biochem, Santa Barbara, CA 93106 USA 电子邮件地址: [email protected]

Promoting gold nanocatalysts in solvent-free selective aerobic oxidation of alcohols

通讯作者地址: Stucky, GD (通讯作者), Univ Calif Santa Barbara, Dept Chem & Biochem, Santa Barbara, CA 93106 USA 地址: 1. Univ Calif Santa Barbara, Dept Chem & Biochem, Santa Barbara, CA 93106 USA 电子邮件地址: [email protected] trace amount of metal carbonate, acetate or borate significantly boosts gold nanocatalysts in selective aerobic oxidation of alcohols under mild solvent-free conditions

One-dimensional assembly of chalcogenide nanoclusters with bifunctional covalent linkers

通讯作者地址: Bu, XH (通讯作者), Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA 地址: 1. Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA 2. Calif State Univ Long Beach, Dept Chem & Biochem, Long Beach, CA 90840 USA 电子邮件地址: [email protected], [email protected]

The interface chemistry between chalcogenide clusters and open framework chalcogenides

通讯作者地址: Feng, PY (通讯作者), Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA 地址: 1. Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA 2. Calif State Univ Long Beach, Dept Chem & Biochem, Long Beach, CA 90840 USAOne of the most exciting recent developments concerning molecular architectures is the emerging field of crystalline chalcogenide superlattices that bridges two traditional but distinct areas of research: chalcogenide clusters and porous materials. By combining synthetic and structural concepts in these two areas, many crystalline solids containing spatially organized chalcogenide clusters have been created that exhibit varied properties ranging from microporosity, fast ion conductivity, and photoluminescence to narrow and tunable electronic band gaps. The potential applications of these materials extend beyond traditional areas such as acid catalysis or adsorption-based separation to include shape-or size-selective photocatalysis, solid-state ionics, and electrochemistry

Pentasupertetrahedral clusters as building blocks for a three-dimensional sulfide superlattice

通讯作者地址: Feng, PY (通讯作者), Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA 地址: 1. Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA 2. Calif State Univ Long Beach, Dept Chem & Biochem, Long Beach, CA 90840 USA 电子邮件地址: [email protected]