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Updated: Jun 16, 2025

Compact Quantum Dots for Single-molecule Imaging
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Published on: October 9, 2012

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在 CuInS2 量子点上交换醇联体在高沸溶剂中的量子点

Satoshi Koyasu1, Haruna Ikeda2, Takamasa Ishigaki1,2,3

  • 1Faculty of Bioscience and Applied Chemistry, Department of Chemical Science and Technology, Hosei University, 3-7-2 Kajino-cho, Koganei, Tokyo 184-8584, Japan.

Langmuir : the ACS journal of surfaces and colloids
|August 20, 2024
PubMed
概括

铜二硫化物 (CuInS2) 量子点 (QDs) 上的联体交换改善了光电子设备的电荷传输. 这项研究证明了使用双相溶剂系统的高效连接物交换,提高了太阳能电池的性能.

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Preparation and Reactions of Thiols02:33

Preparation and Reactions of Thiols

Thiols are prepared using the hydrosulfide anion as a nucleophile in a nucleophilic substitution reaction with alkyl halides. For instance, bromobutane reacts with sodium hydrosulfide to give butanethiol.
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Preparation and Reactions of Sulfides02:26

Preparation and Reactions of Sulfides

Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
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Structure and Nomenclature of Thiols and Sulfides

Thiols and sulfides are sulfur analogs of alcohols and ethers, respectively, where the sulfur atom takes the place of the oxygen atom. Thus, thiols are generally represented as RSH, where R is an alkyl substituent and —SH is the functional group. On the other hand, in sulfides, the central sulfur atom is bonded to two hydrocarbon groups on either side. Depending upon the type of group, sulfides can be either symmetrical or asymmetrical. Both thiols and sulfides display a bent geometry,...
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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
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