An examination of the interfacial interactions between quantum-confined cadmium sulfide clusters and aminocalixarene stabilizer molecules

Coffer, Jeffery L.; Chandler, Robin R.; Gutsche, C. David; Alam, Iftikhar; Pinizzotto, Russell F.; Yang, Hong

doi:10.1021/j100105a027

Cited by 25 publications

(6 citation statements)

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“…124,125 Calixarenes, which are methylene-linked phenolic macrocycles available in a number of cavity sizes, 126 have been used as the host for CdS clusters. 127 The carrier quantum-confinement (SQ) aspects of these and other systems (including those in Tables 4 and 5) are the subject of a subsequent section. Finally, even porous silicon 128 has been used as a host matrix for incorporating CdS; a sequential CBD technique was utilized for this purpose.…”

Section: Layered Compositesmentioning

confidence: 99%

“…Self-assembled monolayers (SAMs) based on thiolated β-cyclodextrin have been shown to be effective for securing ordered arrays of a variety of guest systems, including semiconductors . Other examples for the use of SAMs or supramolecular assemblies as the host are available. , Calixarenes, which are methylene-linked phenolic macrocycles available in a number of cavity sizes, have been used as the host for CdS clusters and ) are the subject of a subsequent section.…”

Section: Preparative Aspectsmentioning

confidence: 99%

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Semiconductor-Based Composite Materials: Preparation, Properties, and Performance

2001

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A diverse array of semiconductor-based composite materials have been prepared, characterized, and utilized in many applications ranging from photocatalysis, photovoltaic cells, photoelectrochromic displays, and light-emitting devices to sensors. The composite architectures (nanoarchitectures in many cases) are equally diverse. In this review, we highlight the advances that have been made and identify some of the gaps in our current knowledge of these materials. Size quantization effects and semiconductor quantum dots are also discussed.

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Section: Layered Compositesmentioning

confidence: 99%

Section: Preparative Aspectsmentioning

confidence: 99%

Semiconductor-Based Composite Materials: Preparation, Properties, and Performance

2001

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“…Numerous studies in the literature exist in which surfactants, − , capping molecules, ,− ,− , and coordinating solvents 15,16 have been used to control particle nucleation and growth and the final particle size. The development of subsequent processing steps, such as gel electrophoresis, , capillary zone electrophoresis, chromatography, ,, size-selective precipitation, ,, and high-temperature annealing, ,,, has helped to further narrow the size distribution and/or improve particle quality in many cases.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Size-Monodisperse CdS Nanocrystals Using Phosphatidylcholine Vesicles as True Reaction Compartments

1996

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Phosphatidylcholine vesicles provide reaction compartments for synthesis of size-quantized CdS nanocrystals of dimension predicted to within 2.5 Å on the basis of initial encapsulated CdCl2 concentration and vesicle diameter. Vesicle formation by detergent dialysis of phosphatidylcholine/hexylglucoside mixed micelles yields highly monodisperse lipid capsules within which monodisperse CdS nanoparticles are precipitated with sulfide. Size-quantized CdS nanocrystals, with diameters ranging from 20 to 60 Å, have been produced with typical standard deviations about the mean diameter of ±8%, as measured by transmission electron microscopy. Spectrophotometric and photoluminescence spectra are consistent with highly crystalline, monodisperse particles with few core or surface defects. Measured exciton energies show excellent agreement with data in the literature. The empirical pseudopotential model presented by Krishna and Friesner for a cubic CdS lattice, correcting for experimentally measured lattice contractions, best fits the exciton energy versus particle diameter data.

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“…Semiconductor nanoparticles are widely used in rapidly growing nanotechnologies owing to their unique photophysical and chemical properties. An important practical issue is to stabilize nanoparticles in a matrix capable of preventing their aggregation [2,3]. In connection with this, considerable effort is focused on the synthesis of semiconductor nanocrystals, including CdS, in various media, such as polymers, glass, thin films, monolayers, and solutions [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

CdS nanoparticles in R-phycoerythrin, a protein matrix

Brekhovskikh

Bekasova

2005

Inorg Mater

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Cadmium sulfide nanoparticles (3.2 to 5.6 nm) are synthesized using R-phycoerythrin as a protein matrix. The effects of the reactant concentrations and solution pH on the particle size of CdS are examined. The optical and photochemical properties of the nanoparticles are studied. Selective fluorimetry results suggest that CdS particles ≥ 3.2 nm in diameter are heteroaggregates. It is found that, during photoreduction of methyl viologen dichloride, the synthesis of CdS nanoparticles resumes. The growth of CdS particles is presumably restricted by the dimensions of the channel in the center of the R-phycoerythrin hexamer (3.5 × 6 nm).

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An examination of the interfacial interactions between quantum-confined cadmium sulfide clusters and aminocalixarene stabilizer molecules

Cited by 25 publications

References 0 publications

Semiconductor-Based Composite Materials: Preparation, Properties, and Performance

Semiconductor-Based Composite Materials: Preparation, Properties, and Performance

Synthesis of Size-Monodisperse CdS Nanocrystals Using Phosphatidylcholine Vesicles as True Reaction Compartments

CdS nanoparticles in R-phycoerythrin, a protein matrix

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