A facile route to aqueous Ag:ZnCdS and Ag:ZnCdSeS quantum dots: Pure emission color tunable over entire visible spectrum

Zeng, Ruosheng; Sun, Zhiguo; Cao, Sheng; Shen, Rongan; Liu, Zuoji; Long, Jintao; Zheng, Jinju; Shen, Yayun; Lin, Xiangnan

doi:10.1016/j.jallcom.2015.01.125

Cited by 19 publications

(2 citation statements)

References 42 publications

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“…Nowadays, semiconductor quantum dots (QDs) based on CdSe, ZnSe, CdTe, CdS, ZnS, InAs, InP, etc. attract a great deal of interest due to their unique size-dependent chemical and optical properties, and consequently, a wide range of their possible applications in optical, non-linear optical, and electronic devices and biomedicine [ 1 , 2 , 3 , 4 , 5 , 6 ]. Construction of devices based on QDs as an active medium requires rather often their embedding into a polymer matrix that may give rise to novel optical properties different from those of pure QDs and the matrix, as happens in the case of liquid crystal polymers [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Monochelic Versus Telechelic Poly(Methyl Methacrylate) as a Matrix for Photoluminescent Nanocomposites with Quantum Dots

et al. 2021

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Nanocomposites based on CdSe or CdSe/ZnS quantum dots (QDs) and poly(methyl methacrylate) (PMMA) of different molecular weights and functionality were synthesized by ligand exchange of oleic acid with RAFT-based PMMA. The successful ligand exchange was confirmed by dynamic light scattering in combination with the approach “macromolecules—ghosts” and transmission electron microscopy. Comparative study of mono- and telechelics of PMMA revealed the similarities and differences in their behavior in formation of complexes with QDs and the optical properties of the corresponding nanocomposites. Telechelics exhibited higher efficiency in the complex formation and seemed to be promising candidates for the construction of devices based on QDs and polymer matrix for optical applications.

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Section: Introductionmentioning

confidence: 99%

Monochelic Versus Telechelic Poly(Methyl Methacrylate) as a Matrix for Photoluminescent Nanocomposites with Quantum Dots

et al. 2021

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“…In recent years nanophosphors [1][2][3][4] and quantum dots (QDs) [5,6] have been investigated as possible sensors for many applications, including but not limited to, medicine, displays, and solar energy harvesting. QDs are semiconductor nanocrystals, in which optical properties are controlled by their particle size, which is in the nanoscale range, as well as shape and composition [7,8]. QDs have attracted attention since their emission spectra and electronic properties have found application as biological labels, light emitting devices, and optoelectronic sensors [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Optical Characteristics of ZnCuInS/ZnS (Core/Shell) Nanocrystal Flexible Films Under X-Ray Excitation

et al. 2019

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The aim of this article is to evaluate optical characteristics, such as the intrinsic conversion efficiency and the inherent light propagation efficiency of three polymethyl methacrylate (PMMA)/methyl methacrylate (MMA) composite ZnCuInS/ZnS (core/shell) nanocrystal flexible films. The concentrations of these were 100 mg/mL, 150 mg/mL, and 250 mg/mL, respectively. Composite films were prepared by homogeneously diluting dry powder quantum dot (QD) samples in toluene and subsequently mixing these with a PMMA/MMA polymer solution. The absolute luminescence efficiency (AE) of the films was measured using X-ray excitation. A theoretical model describing the optical photon propagation in scintillator materials was used to calculate the fraction of the generated optical photons passed through the different material layers. Finally, the intrinsic conversion efficiency was calculated by considering the QD quantum yield and the optical photon emission spectrum.

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ChemInform Abstract: A Facile Route to Aqueous Ag:ZnCdS and Ag:ZnCdSeS Quantum Dots: Pure Emission Color Tunable over Entire Visible Spectrum.

et al. 2015

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A Facile Route to Aqueous Ag:ZnCdS and Ag:ZnCdSeS Quantum Dots: Pure Emission Color Tunable over Entire Visible Spectrum. -Aqueous Ag:ZnCdS quantum dots (QDs) are prepared based on a co-nucleation doping strategy using aqueous solutions of Cd(OAc) 2, Zn(OAc)2 (in presence of mercaptopropionic acid; Cd:Zn molar ratio of 1:1), and AgNO 3 at pH 7 to which a reactive S (and Se) powder precursor (hydrothermal S (Se) solution in presence of NaBH 4) is given (autoclave, 180 C, 2 h). The influence of various experimental variables including the Zn/Cd ratio and Ag-doping concentration on luminescence and UV/Vis absorption spectra of Ag:ZnCdS QDs are systematically investigated. Color-tunable Ag:ZnCdSeS QDs are also prepared via variation of the Se/S precursor ratio. Furthermore, highly efficient Ag:ZnCdS/ZnS and Ag:ZnCdSeS/ZnS core-shell QDs are constructed by depositing a ZnS shell around Ag:ZnCdS and Ag:ZnCdSeS core QDs. -(ZENG*, R.; SUN, Z.; CAO, S.; SHEN, R.; LIU, Z.; LONG, J.; ZHENG, J.; SHEN, Y.; LIN, X.; J. Alloys Compd. 632 (2015) 1-9, http://dx.

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A facile route to aqueous Ag:ZnCdS and Ag:ZnCdSeS quantum dots: Pure emission color tunable over entire visible spectrum

Cited by 19 publications

References 42 publications

Monochelic Versus Telechelic Poly(Methyl Methacrylate) as a Matrix for Photoluminescent Nanocomposites with Quantum Dots

Monochelic Versus Telechelic Poly(Methyl Methacrylate) as a Matrix for Photoluminescent Nanocomposites with Quantum Dots

Optical Characteristics of ZnCuInS/ZnS (Core/Shell) Nanocrystal Flexible Films Under X-Ray Excitation

ChemInform Abstract: A Facile Route to Aqueous Ag:ZnCdS and Ag:ZnCdSeS Quantum Dots: Pure Emission Color Tunable over Entire Visible Spectrum.

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