Optical Activity and Chiral Memory of Thiol-Capped CdTe Nanocrystals

被引：190

作者：

Nakashima, Takuya ^{[1
]}

Kobayashi, Yuki ^{[1
]}

Kawai, Tsuyoshi ^{[1
]}

机构：

[1] Nara Inst Sci & Technol, Grad Sch Mat Sci, Nara 6300192, Japan

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2009年 / 131卷 / 30期

关键词：

QUANTUM DOTS; CHEMISTRY; SURFACE;

D O I：

10.1021/ja902800f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

CdTe nanocrystals (NCs) passivated with chiral ligands D- and L-cysteinemethylester hydrochloride were prepared and observed to exhibit characteristic CD profiles with symmetrical mirror images depending on the chirality of the capping ligand. The optical activity of CdTe NCs is shown to originate from the distorted US shell including chiral capping molecules. The chirality of the NC surface is maintained even after ligand exchange with an achiral thiol, providing an unprecedented chiral memory effect.

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页码：10342 / +

页数：3

相关论文

共 30 条

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

Alivisatos, AP .

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

[2] Relations between the photoluminescence efficiency of CdTe nanocrystals and their surface properties revealed by synchrotron XPS [J].

Borchert, H ;

Talapin, DV ;

Gaponik, N ;

McGinley, C ;

Adam, S ;

Lobo, A ;

Möller, T ;

Weller, H .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (36) :9662-9668

[3] Chiral shells and achiral cores in CdS quantum dots [J].

Elliott, Simon D. ;

Moloney, Micheal P. ;

Gun'ko, Yurii K. .

NANO LETTERS, 2008, 8 (08) :2452-2457

[4] Thiol-capping of CdTe nanocrystals:: An alternative to organometallic synthetic routes [J].

Gaponik, N ;

Talapin, DV ;

Rogach, AL ;

Hoppe, K ;

Shevchenko, EV ;

Kornowski, A ;

Eychmüller, A ;

Weller, H .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (29) :7177-7185

[5] Efficient phase transfer of luminescent thiol-capped nanocrystals: From water to nonpolar organic solvents [J].

Gaponik, N ;

Talapin, DV ;

Rogach, AL ;

Eychmuller, A ;

Weller, H .

NANO LETTERS, 2002, 2 (08) :803-806

[6] Chiral inversion of gold nanoparticles [J].

Gautier, Cyrille ;

Buergi, Thomas .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (22) :7077-7084

[7] Chiral Gold Nanoparticles [J].

Gautier, Cyrille ;

Buergi, Thomas .

CHEMPHYSCHEM, 2009, 10 (03) :483-492

[8] Semiconductor quantum dots for bioanalysis [J].

Gill, Ron ;

Zayats, Maya ;

Willner, Itamar .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2008, 47 (40) :7602-7625

[9] The chemistry of intrinsically chiral surfaces [J].

Held, Georg ;

Gladys, Michael J. .

TOPICS IN CATALYSIS, 2008, 48 (1-4) :128-136

[10] STRUCTURAL INSTABILITY OF ULTRAFINE PARTICLES OF METALS [J].

IIJIMA, S ;

ICHIHASHI, T .

PHYSICAL REVIEW LETTERS, 1986, 56 (06) :616-619