Au nanoparticles encapsulated in Ru carbonyl carboxylate shells

被引：17

作者：

Wang, Suhua ^{[1
]}

Sim, Wee-Sun ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Chem, Singapore 119260, Singapore

来源：

LANGMUIR | 2006年 / 22卷 / 18期

关键词：

D O I：

10.1021/la060784f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A two-step surface functionalization approach has been used to encase Au nanoparticles in monolayer organometallic Ru-complex shells by the reaction of an intermediate surface-bound mercaptopropanoic acid capping species with Ru dodecacarbonyl (Ru-3(CO)(12)) clusters. Vibrational ( infrared and Raman) spectroscopy shows that insertion of carboxylate groups into the Ru clusters results in their fragmentation and the formation of a shell of Ru dicarbonyl carboxylate oligomers that remain attached to the Au nanoparticles through the original Au-alkanethiolate bonds. The structural integrity of the metallic nanoparticulate Au cores has been verified by X-ray photoelectron spectroscopy, X-ray diffraction, and transmission electron microscopy. The organometallic Ru-complex shell may be decomposed thermally to eliminate the mercaptopropanoate and carbonyl groups and leave a mixed phase of Au and RuO2.

引用

页码：7861 / 7866

页数：6

共 48 条

[21] DINUCLEAR RUTHENIUM COMPLEXES AS ACTIVE CATALYST PRECURSORS FOR THE LOW-PRESSURE HYDROFORMYLATION OF ALKENES INTO ALDEHYDES [J].

JENCK, J ;

KALCK, P ;

PINELLI, E ;

SIANI, M ;

THOREZ, A .

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1988, (21) :1428-1430

[22] Self-assembled monolayers of thiolates on metals as a form of nanotechnology [J].

Love, JC ;

Estroff, LA ;

Kriebel, JK ;

Nuzzo, RG ;

Whitesides, GM .

CHEMICAL REVIEWS, 2005, 105 (04) :1103-1169

[23]

MOULDER JF, 1992, HDB XRAY PHOTOELECTR, P115

[24] Synthesis and characterization of monodisperse nanocrystals and close-packed nanocrystal assemblies [J].

Murray, CB ;

Kagan, CR ;

Bawendi, MG .

ANNUAL REVIEW OF MATERIALS SCIENCE, 2000, 30 :545-610

[25] FUNDAMENTAL-STUDIES OF THE CHEMISORPTION OF ORGANOSULFUR COMPOUNDS ON AU(111) - IMPLICATIONS FOR MOLECULAR SELF-ASSEMBLY ON GOLD SURFACES [J].

NUZZO, RG ;

ZEGARSKI, BR ;

DUBOIS, LH .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1987, 109 (03) :733-740

[26] Effects of branched ligands on the structure and stability of monolayers on gold nanoparticles [J].

Paulini, R ;

Frankamp, BL ;

Rotello, VM .

LANGMUIR, 2002, 18 (06) :2368-2373

[27]

PSARO R, 1980, J MOL CATAL, V7, P511

[28] RAMAN FREQUENCIES OF METAL CLUSTER COMPOUNDS - OS3(CO)12 AND RU3(CO)12 [J].

QUICKSALL, CO ;

SPIRO, TG .

INORGANIC CHEMISTRY, 1968, 7 (11) :2365-+

[29] CHEMISTRY OF BRIDGED CARBOXYLATE RUTHENIUM COMPLEXES - CRYSTAL-STRUCTURES OF [RU(PHCOO)(CO)2(PHCOOH)]2, [RU(4-FC6H4COO)2(CO)5(H2O)]2.0.5 C6H6, AND [RU2(S-BUCO2)2(CO)4(S-BUCO2H)]2 [J].

ROTEM, M ;

GOLDBERG, I ;

SHMUELI, U ;

SHVO, Y .

JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1986, 314 (1-2) :185-212

[30] NEW BRIDGED RUTHENIUM CARBOXYLATE COMPLEXES - STRUCTURE AND CATALYTIC ACTIVITY [J].

ROTEM, M ;

SHVO, Y ;

GOLDBERG, I ;

SHMUELI, U .

ORGANOMETALLICS, 1984, 3 (11) :1758-1759

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