A heterocumulene metathesis route to Cd[ESiMe3]2 and passivated CdE (E = S and Se) nanocrystals

被引：16

作者：

Babcock, JR ^{[1
]}

Zehner, RW ^{[1
]}

Sita, LR ^{[1
]}

机构：

[1] Univ Chicago, Dept Chem, Searle Chem Lab, Chicago, IL 60637 USA

来源：

CHEMISTRY OF MATERIALS | 1998年 / 10卷 / 08期

关键词：

D O I：

10.1021/cm980202i

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Heterocumulene metathesis of Cd[N(SiMe3)(2)](2) with (BuNCS)-N-t or CyNCSe in the presence of trioctylphosphine oxide (TOPO) provides TOPO-passivated CdS and CdSe nanocrystals which exhibit strong room-temperature emission. These materials have been converted to dodecanethiol-passivated nanocrystals that were then characterized by a variety of techniques, including TEM and optical spectroscopy. These results serve to expand the synthetic scope of heterocumulene metathesis for the preparation of metal trialkylsilylthiolates and -selenolates under mild conditions and, thereby, metal chalcogenide materials.

引用

页码：2027 / +

页数：4

共 23 条

[1] Perspectives on the physical chemistry of semiconductor nanocrystals [J].

Alivisatos, AP .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (31) :13226-13239

[2] Facile preparation of unsymmetric carbodiimides via in situ tin(II)-mediated heterocumulene metathesis [J].

Babcock, JR ;

Sita, LR .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1998, 120 (22) :5585-5586

[3] Room temperature cyclopentadiene elimination reaction for the synthesis of diethylgallium-amides, -phosphides, and -thiolates. Crystal and molecular structures of [Et(2)GaP(t-Bu)(2)](2) and [Et(2)GaS(SiPh(3))](2) [J].

Beachley, OT ;

Rosenblum, DB ;

Churchill, MR ;

Lake, CH ;

Toomey, LM .

ORGANOMETALLICS, 1996, 15 (17) :3653-3658

[4] ZINC, CADMIUM, AND MERCURY TELLUROLATES - HYDROCARBON SOLUBILITY AND LOW COORDINATION NUMBERS ENFORCED BY STERICALLY ENCUMBERED SILYLTELLUROLATE LIGANDS [J].

BONASIA, PJ ;

ARNOLD, J .

INORGANIC CHEMISTRY, 1992, 31 (12) :2508-2514

[5] BULK AND NANOSTRUCTURE GROUP-II-VI COMPOUNDS FROM MOLECULAR ORGANOMETALLIC PRECURSORS [J].

BRENNAN, JG ;

SIEGRIST, T ;

CARROLL, PJ ;

STUCZYNSKI, SM ;

REYNDERS, P ;

BRUS, LE ;

STEIGERWALD, ML .

CHEMISTRY OF MATERIALS, 1990, 2 (04) :403-409

[6] DARSTELLUNG UND SCHWINKUNGSSPEKTREN VON SILYLAMIDEN DER ELEMENTE ZINK CADMIUM UND QUECKSILBER [J].

BURGER, H ;

SAWODNY, W ;

WANNAGAT, U .

JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1965, 3 (02) :113-&

[7] PREPARATION OF LANTHANIDE TELLUROLATES AND EVIDENCE FOR THE FORMATION OF CLUSTER INTERMEDIATES IN THEIR THERMAL-DECOMPOSITION TO BULK METAL TELLURIDES [J].

CARY, DR ;

ARNOLD, J .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1993, 115 (06) :2520-2521

[8] IMPROVED SYNTHESES OF [FE2S2CL4]2- AND [FE2OCL6]2- AND OXO SULFIDO LIGAND SUBSTITUTION BY USE OF SILYLSULFIDE REAGENTS [J].

DO, Y ;

SIMHON, ED ;

HOLM, RH .

INORGANIC CHEMISTRY, 1983, 22 (25) :3809-3812

[9] CRYSTAL-STRUCTURE AND OPTICAL-PROPERTIES OF CD32S14(SC6H5)36.DMF4, A CLUSTER WITH A 15-ANGSTROM CDS CORE [J].

HERRON, N ;

CALABRESE, JC ;

FARNETH, WE ;

WANG, Y .

SCIENCE, 1993, 259 (5100) :1426-1428

[10] Synthesis and reactivity of [PPh(4)][Ru(N)Me(3)(SSiMe(3))], a ruthenium(VI) trimethylsilanethiolate complex [J].

Liang, HC ;

Shapley, PA .

ORGANOMETALLICS, 1996, 15 (05) :1331-1333

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