The Effect of Stabilizer Density on Transformation of CdTe Nanoparticles Induced by Ag Cations

Tang, Zhiyong; Podsiadlo, Paul; Shim, Bong Sup; Lee, Jungwoo; Kotov, Nicholas A.

doi:10.1002/adfm.200800691

Cited by 28 publications

(25 citation statements)

References 65 publications

(75 reference statements)

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“…80,81 Ag 2 Te nanowires have been produced by Ag + ions-induced transformation of CdTe nanowires selfassembled from CdTe NCs. 82 Covalent linking as a nanoassembly method is further developed in the direction of immobilizing NCs on thin, fluid films consisting of poly(acrylic acid) (PAA) polymer chains tethered by one end to an underlying substrate in a polymer brush configuration. 83 The protocol involves covalent bonding between amino groups present on the surface of CdTe NCs (stabilized by MA) and carboxylic groups of PAA polymer chains.…”

Section: Assemblies Of Thiol-capped Ncs: Toward Sophisticated Archite...mentioning

confidence: 99%

Thiol-capped CdTe nanocrystals: progress and perspectives of the related research fields

Gaponik

Rogach

2010

Phys. Chem. Chem. Phys.

114

106

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This article analyzes and summarizes recent developments and newly emerging research fields related to thiol-capped CdTe nanocrystals, the most successful example of the colloidal quantum dots directly synthesized in aqueous solution. Progress in the synthesis and design of novel materials and functionalities, sophisticated assemblies of thiol-capped nanocrystals, development and validation of analytical and spectroscopic methods relying on thiol-capped CdTe nanocrystals as a model system, and, finally, applications of thiol-capped semiconductor nanocrystals in various fields ranging from light harvesting and energy transfer to biotechnology are addressed.

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Section: Assemblies Of Thiol-capped Ncs: Toward Sophisticated Archite...mentioning

confidence: 99%

Thiol-capped CdTe nanocrystals: progress and perspectives of the related research fields

Gaponik

Rogach

2010

Phys. Chem. Chem. Phys.

114

106

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“…S7 †), including four kinds of small molecules containing a carboxyl group (-COOH) such as acetic acid, succinic acid, glutaric acid, and EDTA, and two kinds of small molecules with a hydroxyl (-OH), mercapto and amido (-SH and -NH 2 ) group, namely glycerol and mercaptamine. 30,[37][38][39] When the four kinds of small molecules containing a carboxyl group were used to replace TSC in the preparation of Se crystals, similar branched structures could be observed in all cases (Fig. S8 †).…”

Section: Resultsmentioning

confidence: 91%

Planar Se multipod crystals with unusual growth directions: thoughts on the spontaneous growth of hexagonal Se

Deng

Wang

2015

CrystEngComm

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Selenium (Se) is an important elemental semiconductor. Its intrinsic crystal structure is composed of hexagonally packed, one-dimensional (1D) spiral chains of Se atoms, which easily results in preferential 1D anisotropic growth along the [001] direction. In this study, we observed that planar Se multipod crystals with unusual growth directions (namely, not along the preferential [001] direction), including tripods, tetrapods, pentapods, hexapods, etc. could be formed spontaneously in water, via the oxidation of Na 2 Se by air and subsequent crystallization of Se monomers under ambient conditions. Here, the controlled synthesis of these Se multipods is achieved by using small molecules containing a carboxyl group to stabilize selectively the (001) facets of hexagonal Se (h-Se) crystals. Furthermore, their growth modes were investigated systematically and revealed, using a combination of scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected-area electron diffraction (SAED) and X-ray powder diffraction (XRD) characterization methods. Lastly, based on the acquired understanding, we consider that by selecting the type of small molecule and(/or) controlling the transformation rate of Se 2− → Se, the spontaneous growth of h-Se crystals could be controlled well.

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“…Very recently, Tang et al extended the preparation of 1-D NP assemblies by simultaneously taking advantage of chemical reactions inside NPs and physical dipole attractions between NPs [38]. In the reaction of CdTe nanoparticles replaced by Ag cations, they found that the NPs with partial removal of 2-aminoethanethiol stabilizers spontaneously organized into 3-D Ag 2 Te nanowire networks upon the intrinsic dipole attraction, whereas only separated Ag 2 Te NPs were obtained without the removal of the stabilizers, which showed strong screening effect of isotropic electrostatic repulsion against directional dipole attractions (Fig.…”

Section: Electric Dipole Momentmentioning

confidence: 99%

One-dimensional self-assembly of inorganic nanoparticles

Gao

Wang

et al. 2009

Front. Phys. China

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This review is focused on the recent research progresses on one-dimensional (1-D) inorganic nanoparticle (NP) assemblies. First, we introduce some preparation methods of 1-D NP assemblies, which are the base of the investigation to 1-D NP assemblies. In the following part, we discuss the formation mechanism of 1-D NP assemblies, which is very important for us to understand the self-assembly process. We also summarize the novel properties of 1-D NP assemblies. Finally, we outlook the development of 1-D NP assemblies in the near future. We believe that the scientific and technical potentials of NP assemblies are immense, and their future is bright.

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The Effect of Stabilizer Density on Transformation of CdTe Nanoparticles Induced by Ag Cations

Cited by 28 publications

References 65 publications

Thiol-capped CdTe nanocrystals: progress and perspectives of the related research fields

Thiol-capped CdTe nanocrystals: progress and perspectives of the related research fields

Planar Se multipod crystals with unusual growth directions: thoughts on the spontaneous growth of hexagonal Se

One-dimensional self-assembly of inorganic nanoparticles

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