Colloidal CdTe and CdSe Quantum Dots: Technology of Preparing and Optical Properties

Korbutyak, D. V.; Kalytchuk, Sergii; Geru, Ion

doi:10.1166/jno.2009.1019

Cited by 12 publications

(12 citation statements)

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“…Nanopartiсles of CdTe were prepared in aqueous solution at room temperature using procedure similar to described in [17,18]. Briefly, Cd precursor solutions were prepared by mixing 3 mmol of CdCl 2 with 225 ml of ultrapure water followed by 7.7 mmol of thioglycolic acid (TGA) under magnetic stirring.…”

Section: Methodsmentioning

confidence: 99%

“…Early detection is particularly important, because the tumor is prone to metastasize (especially in the lung). The human osteosarcoma cell line was selected to determine the interaction of the CdTe QDs with human cancer cells [17].To improve the cancer detection and treatment effectiveness, researches on the cell lines with nanoparticles are conducted increasingly [9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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CdTe Quantum Dots and Their Bioconjugate with Human Serum Albumin for Fluorescence Imaging

Stolyarchuk¹,

Nowak²,

Polit³

et al. 2017

PCSS

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The interaction between CdTe quantum dots (QDs) with human serum albumin (HSA) and human cell culture was studied by optical spectroscopy technique. Performed research explored the interaction between the CdTe QDs and HSA, and fluorescence imaging efficiency of the QD-HSA bioconjugates in comparison with colloidal QDs. The secondary structure of the HSA is similar to the native form, which suggest a biocompatibility of prepared bionanocomplex. The CdTe QD-HSA bionanoconjugate shows chemical stability in phosphatebuffered saline (PBS) under ambient conditions, furthermore, it is stable in cytoplasm and suitable for cell labeling, tracking, and other bioimaging applications. The CdTe QDs located in an osteosarcoma cancer cells show a high luminescence intensity. The light emission of the CdTe QDs connected with albumin is less than the pure QDs, but it is still satisfactory, and additionally it is stable and have long photoluminescence lifetime. It suggest, that the CdTe NC-HSA bionanocomplex can be used as a fluorescent probe for cell labeling, tracking, and other bioimaging applications.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

CdTe Quantum Dots and Their Bioconjugate with Human Serum Albumin for Fluorescence Imaging

Stolyarchuk¹,

Nowak²,

Polit³

et al. 2017

PCSS

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“…The synthesis of particles in a solution occurs by chemical reactions resulting in the formation of nuclei and subsequent particle growth. Nanoparticles of CdTe were synthesized in aqueous solution at room temperature using procedure similar to described in [13]. Briefly, 3 mmol of CdCl 2 were dissolved in 225 ml of deionized water followed by adding 7.7 mmol of TGA under magnetic stirring.…”

Section: Methodsmentioning

confidence: 99%

Interaction of human serum albumin with CdTe quantum dots probed by optical spectroscopy methods

Савчук

Stolyarchuk

Grygoryshyn

et al. 2013

Eleventh International Conference on Correlation Optics

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In this work, colloidal CdTe nanoparticles were synthesized by using thioglycolic acid (TGA) as passivator. In the absorption spectra of the colloidal CdTe nanoparticles exciton band was found to be shifted to higher photon energy as compared with bulk crystals due to quantum confinement effect. It was shown that addition of human serum albumin (HSA) to colloidal CdTe nanoparticles led to a gradual decrease of absorption and broadening of exciton structure. However, energy position of the exciton band in this case remains not shifted. In photoluminescence spectra of solution CdTe quantum dots and HSA so-called quenching effect has been observed. The quenching of HSA fluorescence intensity by semiconductor nanoparticles was analysed in framework of the formation of quantum dots-HSA protein complex.

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“…The CdTe NCs were synthesised by using a procedure similar to the one described by Savchuk et al [23] and Korbutyak et al [24]. Briefly, the 3 × 10 −3 M of CdCl 2 were dissolved with 225 ml of ultrapure water followed by adding 7.7 × 10 −3 M of TGA.…”

Section: Experimentmentioning

confidence: 99%

Synthesis and characterisation of human serum albumin passivated CdTe nanocrystallites as fluorescent probe

Wojnarowska-Nowak

Polit

Zięba

et al. 2018

Micro & Nano Letters

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The II-VI nanocrystallites (NCs) are well known as a great fluorescent probe, but one of the main problem is a toxic effect. Covering a semiconductor NCs by some materials or chemicals can reduce it, but change optical properties and functional characteristics of NCs. The potential ability of the CdTe NCs passivated by human serum albumin (HSA) to cancer cells bioimaging is examined. Performed research explored the interaction between the CdTe NCs and HSA, and fluorescence imaging efficiency of the NC-HSA bionanocomplex in comparison with the uncovered NCs. The secondary structure of the HSA is similar to the native form, which suggests a biocompatibility of the prepared bionanocomplex. The CdTe NCs located in osteosarcoma cancer cells show a high luminescence intensity. The light emission of the CdTe NCs connected with albumin is less than the pure NCs, but it is still satisfactory, and additionally have high resistance to photo-bleaching. It suggests that the CdTe NC-HSA bionanocomplex can be used as a fluorescent probe for cell labelling, tracking and other bioimaging applications.

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Colloidal CdTe and CdSe Quantum Dots: Technology of Preparing and Optical Properties

Cited by 12 publications

References 1 publication

CdTe Quantum Dots and Their Bioconjugate with Human Serum Albumin for Fluorescence Imaging

CdTe Quantum Dots and Their Bioconjugate with Human Serum Albumin for Fluorescence Imaging

Interaction of human serum albumin with CdTe quantum dots probed by optical spectroscopy methods

Synthesis and characterisation of human serum albumin passivated CdTe nanocrystallites as fluorescent probe

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