Glutathione-capped CdTe quantum dots for the sensitive detection of glucose

Yuan, Jinghe; Guo, Weiwei; Yin, Jianyuan; Wang, Erkang

doi:10.1016/j.talanta.2008.10.032

Cited by 106 publications

(52 citation statements)

References 30 publications

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“…MPA-CdTe QDs were synthesized using a modified method of Yuan et al 30 In the method, 25 mL 0.64 mM CdCl 2 solution and 0.10 g of trisodium citrate was transferred into a single-necked flask. Then, 100 μL, 11.5 M MPA and 0.01 mmol Te (IV) were added respectively, with continuous stirring.…”

Section: Synthesis Of Water-soluble Mpa-cdte Qdsmentioning

confidence: 99%

Use of Water Soluble and Phosphorescent MPA Capped CdTe Quantum Dots for Detection of Urea

Oymak

Ertaş

Tamer

2018

tjps

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ÖZAmaç: Bu çalışmada 3-MPA kaplı CdTe kullanılarak üre tayini için yöntem geliştirilmiştir. Gereç ve Yöntemler: Yöntem üreaz enzimi ile ürenin reaksiyonu sonucu üretilen amonyağın ortam pH'sini değiştirmesi esasına dayanmaktadır. MPA kaplı CdTe'nin fosforesans sinyali pH 2.5-5.0 arasında üre konsantrasyonuyla doğrusal olarak artmaktadır. Optimum koşullar altında doğrusal aralık 0.016-0.16 mM (1-10 mg/L) gözlenebilme sınırı 3 s/b formülüne göre 0.003 mM (0.17 mg/L) olarak hesaplanmıştır. Bağıl standart sapma, 4 mg/L üre konsantrasyonunda %3.4 olarak hesaplanmıştır (n=7). Bulgular: Yöntem serum numunesine başarılı bir şekilde uygulanmıştır. Aynı serum numuneleri bağımsız bir laboratuvar tarafından analiz edilmiş ve sonuçlarda %95 güven aralığında istatistiki fark görülmemiştir (F testi). Sonuç: Önerilen yöntem serumda üre tayini için, örnek ön hazırlığına ihtiyaç duymayan, basit, seçici ve düşük maliyetlidir. Anahtar kelimeler: Fosforesan kuantum noktacık, MPA kaplı CdTe, üre Objectives: To describe a method for the determination of urea in blood serum using urease enzyme and 3-MPA-capped CdTe quantum dots. Materials and Methods:The method is based on the increase in pH of the solution as a result of the reaction between urea and urease, which causes an increase in the phosphorescence signal of MPA-CdTe quantum dots in the pH range of 2.5-5.0. Under the optimum conditions, the linear range of urea was 0.016-0.16 mM (1-10 mg/L) and the limit of detection based on 3 s/b was calculated as 0.003 mM (0.17 mg/L). The relative standard deviation was calculated as 3.4% at 4 mg/L urea concentration (n=7). Results:The method was applied to human serum samples. The same samples were analyzed by an independent laboratory and the results were not statistically different, at 95% confidence level (F test). Conclusion:The proposed method does not need sample pretreatment, is simple, selective, and cost-effective for the determination of urea in serum samples.

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Section: Synthesis Of Water-soluble Mpa-cdte Qdsmentioning

confidence: 99%

Use of Water Soluble and Phosphorescent MPA Capped CdTe Quantum Dots for Detection of Urea

Oymak

Ertaş

Tamer

2018

tjps

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“…The bifunctional molecules include the monothiolate ligands, bidentate thiols, and dendrimers ( Fig. 9.6) [29,[31][32][33].…”

Section: Water-soluble Qdsmentioning

confidence: 99%

Nanoparticles and Sensors

et al. 2011

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“…More recently, Yuan et al developed a simple and sensitive assay system for glucose sensing based on the glutathione-capped CdTe QDs [95]. More specifically, GSH-capped CdTe QDs exhibit high sensitivity to H 2 O 2 produced from the glucose oxidase catalyzed oxidation of glucose.…”

Section: Functionalized Cdte Quantum Dots For Sensing Applicationsmentioning

confidence: 99%

Aqueous phase synthesis of CdTe quantum dots for biophotonics

Yong

Law

Roy

et al. 2010

Journal of Biophotonics

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Over the past few years, CdTe quantum dots have been demonstrated as powerful probes for biophotonics applications. The aqueous phase synthesis technique remains the best approach to make high quality CdTe QDs in a single‐pot process. CdTe QDs prepared directly in the aqueous phase can have quantum yield as high as 80%. In addition, the surface of CdTe QDs prepared using the aqueous phase technique is functionalized with reactive groups that enable them to be directly conjugated with specific ligands for targeted delivery and sensing. In this contribution, we review recent progress in fabricating aqueous CdTe QDs and exploiting their optical properties in novel approaches to biomedical imaging and sensing applications. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Glutathione-capped CdTe quantum dots for the sensitive detection of glucose

Cited by 106 publications

References 30 publications

Use of Water Soluble and Phosphorescent MPA Capped CdTe Quantum Dots for Detection of Urea

Use of Water Soluble and Phosphorescent MPA Capped CdTe Quantum Dots for Detection of Urea

Nanoparticles and Sensors

Aqueous phase synthesis of CdTe quantum dots for biophotonics

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