Synthesis and photoluminescent properties of doped ZnS nanocrystals capped by poly(vinylpyrrolidone)

Porambo, Michael; Marsh, Anderson L.

doi:10.1016/j.optmat.2009.03.013

Cited by 39 publications

(20 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6a). Porambo 419 and Marsh [1] reported previously that low-level (0-1%) transition 420 metal doping of ZnS NPs did not influence the particle size. Induc-421 tively coupled plasma mass spectrometry (ICP-MS) analysis 422 revealed a linear relationship between the nominal and measured 423 cation ratio (Fig.…”

mentioning

confidence: 93%

Scalable production of microbially mediated zinc sulfide nanoparticles and application to functional thin films

et al. 2014

View full text Add to dashboard Cite

mentioning

confidence: 93%

Scalable production of microbially mediated zinc sulfide nanoparticles and application to functional thin films

et al. 2014

View full text Add to dashboard Cite

“…The sizes of the nanocrystals generated for this work varied from 2.7 to 4.4 nm (Table ). These values are within the range of sizes published previously for ZnS nanocrystals that are capped effectively during synthesis (Chow et al ., ; Kho et al ., , a; Porambo and Marsh, ). Figure , panels E and F show UV spectra of phenylalanine‐capped (Phe‐capped) and tryptone‐capped (Trypt‐capped) nanocrystals, respectively, and are typical of the spectra for all of the nanocrystals used herein.…”

Section: Resultsmentioning

confidence: 98%

“…; Kho et al . , ; Porambo and Marsh, ). ZnS nanocrystals were synthesized according to a simple double replacement reaction in aqueous solution:

{Zn}^{2 +} (aq) + cap (aq) S^{2 -} (aq) \to cap - ZnS (s)

…”

Section: Methodsmentioning

confidence: 98%

See 1 more Smart Citation

ZnS nanocrystal cytotoxicity is influenced by capping agent chemical structure and duration of time in suspension

Weilnau

Black

Chehata

et al. 2012

J of Applied Toxicology

Self Cite

View full text Add to dashboard Cite

As a result of their characteristic physical and optical properties, including their size, intense fluorescence, broad excitation, narrow emission and resistance to photobleaching, semiconductor nanocrystals are potentially useful for a variety of biological applications including molecular imaging, live-cell labeling, photodynamic therapy and targeted drug delivery. In this study, zinc sulfide (ZnS) semiconductor nanocrystals were synthesized in the 3 to 4 nm size range with selected capping agents intended to protect the nanocrystal core and increase its biological compatibility. We show that the biocompatibility of ZnS nanocrystals with primary murine splenocytes is influenced by the chemical structure of the outer capping agent on the nanocrystal. Additionally, the cytotoxicity of ZnS nanocrystals increases markedly as a function of time spent in suspension in phosphate-buffered saline (PBS). These data suggest that the potential therapeutic and/or biological use of ZnS nanocrystals is inherently dependent upon the proper choice of capping agent, as well as the conditions of nanocrystal preparation and storage.

show abstract

“…These optical and electronic properties arise due to quantum confinement resulting from the nanometer size of the particle. 1 The origin of novel optical and electronic properties is not related to their crystalline structure. The structures of nanoparticles and corresponding bulk materials appear to be the same.…”

Section: Introductionmentioning

confidence: 99%

OPTICAL PROPERTIES OF SYNTHESIZED NANOPARTICLES ZnS USING METHACRYLIC ACID AS THE CAPPING AGENT

Nazerdeylami

Saievar-Iranizad

Molaei

2012

Int. J. Mod. Phys. Conf. Ser.

View full text Add to dashboard Cite

Optical analysis (UV-vis spectroscopy) of solution of ZnS nanoparticles prepared at room temperature by a chemical capping method using methacrylic acid (MAA) capping agent at concentration of 0.05, 0.2, 0.5 and 1.17 molar is investigated. The spectroscopy results indicate increasing of band gap of ZnS through increasing concentration of the methacrylic acid as capping agent in the solution. According to the relation of Effective Mass Approximation, it is concluded that the size of nanoparticles decreased with the increasing concentration of the capping agent in the tested solutions. The size of the particles is found to be in 1.77-2.05 nm range.

show abstract

Synthesis and photoluminescent properties of doped ZnS nanocrystals capped by poly(vinylpyrrolidone)

Cited by 39 publications

References 29 publications

Scalable production of microbially mediated zinc sulfide nanoparticles and application to functional thin films

Scalable production of microbially mediated zinc sulfide nanoparticles and application to functional thin films

ZnS nanocrystal cytotoxicity is influenced by capping agent chemical structure and duration of time in suspension

OPTICAL PROPERTIES OF SYNTHESIZED NANOPARTICLES ZnS USING METHACRYLIC ACID AS THE CAPPING AGENT

Contact Info

Product

Resources

About