Ligand adsorption/desorption on sterically stabilized InP colloidal nanocrystals: Observation and thermodynamic analysis

被引：74
作者：
Moreels, Iwan
Martins, Jose C.
Hens, Zeger
机构：
[1] Univ Ghent, Phys Chem Lab, B-9000 Ghent, Belgium
[2] Univ Ghent, Dept Organ Chem, B-9000 Ghent, Belgium
来源：
CHEMPHYSCHEM | 2006年 / 7卷 / 05期
关键词：
colloids; ligand effects; nanostructures; NMR spectroscopy; surface chemistry;
D O I：
10.1002/cphc.200500659
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：
Macroscopic characterisation: The adsorption/desorption equilibrium of trioctylphosphine oxide ligands at colloidal InP nanocrystals (see picture) is investigated with quantitative, one-dimensional 1H NMR spectroscopy. Thermodynamic analysis of the isotherm demonstrates that formation of the capping is driven by favorable adsorbate-substrate interactions and is strengthened by adsorbate-adsorbate interactions. © 2006 Wiley-VCH Verlag GmbH & Co. KGaA.
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收藏
页码：1028 / 1031
页数：4
相关论文
共 30 条
  • [1] ALABADLEH HA, 2005, J PHYS CHEM B, V109
  • [2] Structure and chain dynamics of alkanethiol-capped gold colloids
    Badia, A
    Gao, W
    Singh, S
    Demers, L
    Cuccia, L
    Reven, L
    [J]. LANGMUIR, 1996, 12 (05) : 1262 - 1269
  • [3] Shell-tunneling Spectroscopy of the single-particle energy levels of insulating quantum dots
    Bakkers, EPAM
    Hens, Z
    Zunger, A
    Franceschetti, A
    Kouwenhoven, LP
    Gurevich, L
    Vanmaekelbergh, D
    [J]. NANO LETTERS, 2001, 1 (10) : 551 - 556
  • [4] Identification of atomic-like electronic states in indium arsenide nanocrystal quantum dots
    Banin, U
    Cao, YW
    Katz, D
    Millo, O
    [J]. NATURE, 1999, 400 (6744) : 542 - 544
  • [5] NMR analysis of surfaces and interfaces in 2-nm CdSe
    Berrettini, MG
    Braun, G
    Hu, JG
    Strouse, GF
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (22) : 7063 - 7070
  • [6] Nanoscale colloidal metals and alloys stabilized by solvents and surfactants - Preparation and use as catalyst precursors
    Bonnemann, H
    Braun, G
    Brijoux, W
    Brinkmann, R
    Tilling, AS
    Seevogel, K
    Siepen, K
    [J]. JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1996, 520 (1-2) : 143 - 162
  • [7] Improved optical properties of US quantum dots by ligand exchange
    Comparelli, R
    Zezza, F
    Striccoli, M
    Curri, ML
    Tommasi, R
    Agostiano, A
    [J]. MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS, 2003, 23 (6-8): : 1083 - 1086
  • [8] THERMAL-STABILITY OF SELF-ASSEMBLED MONOLAYERS
    DELAMARCHE, E
    MICHEL, B
    KANG, H
    GERBER, C
    [J]. LANGMUIR, 1994, 10 (11) : 4103 - 4108
  • [9] Single-step synthesis to control the photoluminescence quantum yield and size dispersion of CdSe nanocrystals
    Donegá, CD
    Hickey, SG
    Wuister, SF
    Vanmaekelbergh, D
    Meijerink, A
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (02) : 489 - 496
  • [10] Synthesis of size-selected, surface-passivated InP nanocrystals
    Guzelian, AA
    Katari, JEB
    Kadavanich, AV
    Banin, U
    Hamad, K
    Juban, E
    Alivisatos, AP
    Wolters, RH
    Arnold, CC
    Heath, JR
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (17) : 7212 - 7219
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