The use of imidazolium ionic liquid/copper complex as novel and green catalyst for chemiluminescent detection of folic acid by Mn-doped ZnS nanocrystals

Azizi, Seyed Naser; Shakeri, Parmis; Chaichi, Mohammad Javad; Bekhradnia, Ahmadreza; Taghavi, Mehdi; Ghaemy, Mousa

doi:10.1016/j.saa.2013.11.036

Cited by 29 publications

(12 citation statements)

References 53 publications

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“…The doping of ZnS semiconductor nanocrystals by the incorporation of atomic impurities is routinely used to modify their electrical and optical properties [8,9]. A demonstrated ability to introduce transition-metal impurities into semiconductor quantum dots and, hence, to form doped nanostructures has indeed opened up a new branch in the field of nanoscience [10][11][12]. The luminescence of Mn 2+ -doped II-VI semiconductor quantum dots due to the 4 T 1 -(4G)f 6 A 1 (6S) transition is much higher than that of their bulk counterpart [13].…”

Section: Introductionmentioning

confidence: 99%

Efficient Photoluminescence of Mn²⁺-Doped ZnS Quantum Dots Sensitized by Hypocrellin A

Chen

Liu

Zhang

et al. 2015

Advances in Materials Science and Engineering

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Mn2+-doped ZnS semiconductor quantum dots reveal remarkably intense photoluminescence with the4T1(4G) f6A1(6S) transition. In this study, following growth doping technique, Mn2+-doped ZnS quantum dots (ZnS:Mn2+QDs) with high-quality optical properties and narrow size distribution were synthesized successfully. The dopant emission has been optimized with various reaction parameters, and it has been found that the percentage of introduced dopant, reaction temperature, and time as well as the pH of a reaction mixture are key factors for controlling the intensity. Photoluminescence emission (PL) measurements of ZnS:Mn2+QDs show Mn2+d-d orange luminescence along with band-edge blue luminescence. Moreover, the electron transfer from singlet states of hypocrellin A (HA) to colloidal ZnS:Mn2+QDs has been examined by absorption spectra and fluorescence quenching. The absorption spectrum gave an evidence of the increases in the extinction coefficient and the red-shift of the absorption maxima in the absorption spectra of HA in the presence of ZnS:Mn2+QDs, demonstrating the occurrence of surface interactions between the sensitizer and the particle surface. Fluorescence quenching by ZnS:Mn2+QDs also suggested that there were a complex association between HA and ZnS:Mn2+QDs, which was necessary for observing the heterogeneous electron-transfer process at the interface of sensitizer-semiconductor.

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Section: Introductionmentioning

confidence: 99%

Efficient Photoluminescence of Mn²⁺-Doped ZnS Quantum Dots Sensitized by Hypocrellin A

Chen

Liu

Zhang

et al. 2015

Advances in Materials Science and Engineering

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“…The CL of luminol and QDs in aqueous solution has been studied extensively . CdSe QDs are capable of increasing luminol−hydrogen peroxide CL intensity.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of cadmium selenide quantum dots doped by europium and investigation of their chemiluminescence properties and antibacterial activities

et al. 2019

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Nanoparticles of cadmium selenide (CdSe) doped with europium, were synthesized as stabilizing agents using thioglycolic acid ligand. This method is based on the enhancing effect of CdSe quantum dots (QDs) doped with europium on chemiluminescence (CL) emission. This emission was generated by mixing CdSe QDs with manganese (II), iron (II) and chrome (II) sulfates as catalysts in the presence of hydrogen peroxide (H 2 O 2 ). The structural characteristics and morphology of these nanoparticles were investigated by scanning electron microscopy, Fourier transform infrared spectroscopy, ultraviolet-visible absorption spectroscopy, X-ray pattern and dynamic light scattering methods. The CdSe QDs doped with europium were used as the sensitizer in a luminol−hydrogen peroxide CL system. The sensitized CdSe QDs were analyzed for antibacterial activity against Gram-positive or Gram-negative bacteria. The results showed that the CdSe QDs are effective against all the studied bacteria, effectiveness was especially higher for Bacillus subtilis.

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“…According to the data reported in the literature for the synthesis of compounds 3a and 4a, NP is considered as a good catalyst compared with those in Table 4. The present procedures not only afford the products in excellent yield in short reaction times, but also avoid problems [12][13][14]. A possible mechanism for this transformation is proposed in Scheme 2.…”

Section: Synthesis Of Tetraketones and Xanthenes Using Np As Catalystmentioning

confidence: 93%

“…Apart from quantum dots, which are known as inorganic fluorophores [14][15][16], xanthene-based compounds as organic fluorophores are commonly used in applications due to their brightness, high quantum yields, and low-energy excitation. Because of the extensive use of these chemicals, the search for efficient and facile synthesis of these heterocyclic compounds continues to attract much attention.…”

Section: Introductionmentioning

confidence: 99%

Natural phosphate as an efficient and green catalyst for synthesis of tetraketone and xanthene derivatives

et al. 2016

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Natural phosphate was applied as an efficient and ecofriendly catalyst for the synthesis of tetraketones (2-2.5 h, 90-100 %) and xanthenes (6.5-8.5 h, 84-95 %) via Knoevenagel-Michael cascade reaction of aromatic aldehydes with 1,3-cyclic diketones in water and ethanol, respectively. This protocol provides several advantages over the traditional chemical synthesis, such as simple work-up, easy handling procedure, nontoxicity and stability of catalyst, low cost and environmental friendliness. Graphical Abstract& Mahmood Tajbakhsh

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The use of imidazolium ionic liquid/copper complex as novel and green catalyst for chemiluminescent detection of folic acid by Mn-doped ZnS nanocrystals

Cited by 29 publications

References 53 publications

Efficient Photoluminescence of Mn²⁺-Doped ZnS Quantum Dots Sensitized by Hypocrellin A

Efficient Photoluminescence of Mn²⁺-Doped ZnS Quantum Dots Sensitized by Hypocrellin A

Synthesis and characterization of cadmium selenide quantum dots doped by europium and investigation of their chemiluminescence properties and antibacterial activities

Natural phosphate as an efficient and green catalyst for synthesis of tetraketone and xanthene derivatives

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The use of imidazolium ionic liquid/copper complex as novel and green catalyst for chemiluminescent detection of folic acid by Mn-doped ZnS nanocrystals

Cited by 29 publications

References 53 publications

Efficient Photoluminescence of Mn2+-Doped ZnS Quantum Dots Sensitized by Hypocrellin A

Efficient Photoluminescence of Mn2+-Doped ZnS Quantum Dots Sensitized by Hypocrellin A

Synthesis and characterization of cadmium selenide quantum dots doped by europium and investigation of their chemiluminescence properties and antibacterial activities

Natural phosphate as an efficient and green catalyst for synthesis of tetraketone and xanthene derivatives

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Efficient Photoluminescence of Mn²⁺-Doped ZnS Quantum Dots Sensitized by Hypocrellin A

Efficient Photoluminescence of Mn²⁺-Doped ZnS Quantum Dots Sensitized by Hypocrellin A