Synthesis and characterization of glucose-capped CdSe quantum dots. Electrochemical and computational studies of corresponding carbon-ionic liquid electrode for quantitative determination of minoxidil

Shamsipur, Mojtaba; Pashabadi, Afshin; Hemmateenejad, Bahram; Khosousi, Tahereh; Parvin, Mohammad Hadi

doi:10.1016/j.jelechem.2016.08.030

Cited by 18 publications

(2 citation statements)

References 33 publications

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“…For example, the bond angle and elastic constant of a specimen with 3 nm are, respectively, 3 eV rad −2 and 14.93°, which are larger than in the case with 5 nm (2.626 eV rad −2 and 9.75°), but both bond angle variation energies are less than the potential energy, by ~10% and ~4.6% for 3 nm CdSe NCs and for 5 nm CdSe NCs, respectively. Importantly, our predictions are in good agreement with other results from molecular mechanics, first-principles calculations and effective mass approximation [28][29][30]. Moreover, by considering the change in total energy and using equation ( 7), the sizedependent bandgap of three types of CdSe nanostructures are shown in the inset of figure 1(b).…”

Section: Resultssupporting

confidence: 86%

Size-dependent exciton binding energy in semiconductor nanostructures

Zhu

et al. 2020

J. Phys. D: Appl. Phys.

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In order to clarify the exciton binding energy (EBE) in semiconductor nanostructures, we investigate the size-dependent bond identities based on the atomic-bond-relaxation consideration. Taking into account the shell/core configuration of semiconductor nanostructures, we find that the changes in bond length and bond angle respectively decrease and increase as the dimensions of nanostructures diminish. Moreover, the EBE increases as the size decreases with a dependence, where D and p are the size and sublinear scaling factor, respectively. Agreement between our predictions and available evidence suggests that the proposed model can be a general approach to deal with the relationship between EBE and intrinsic properties of semiconductor nanostructures.

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Section: Resultssupporting

confidence: 86%

Size-dependent exciton binding energy in semiconductor nanostructures

Zhu

et al. 2020

J. Phys. D: Appl. Phys.

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“…In this study, we synthesized random arrays of manganese-nanobar film at the surface of an Au electrode. In recent years, our research groups have been successfully report some application of nanomaterials in electrochemical sensors and biosensors [25][26][27][28]. The prepared electrode showed a distinct behavior at different AA centration ranges in a way that provides two paths for oxidation of AA through a direct path and an electrocatalysis path.…”

mentioning

confidence: 99%

A Dense Manganese Porphyrin-Nanobar Random Arrays: Direct and Electrocatalytic Oxidation of Ascorbic Acid in the Presence of Dopamine and Uric Acid

Shamsipur¹,

Hashem²,

Pashabadi³

2017

Int J Nanoparticles Nanotech

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Microelectrode arrays demonstrated an attractive behavior relate to macroelectrodes, as they can produce voltammetric responses of similar magnitude to their macro counterparts, but with a considerably less capacitive/background current. Hence, they have found an increasing use in electroanalytical sensing devices. Recently, some researches were focused on designing new types of sensing-arrays that employed micro/nanoelectrodes in both regular and random distributions [1,2]. These structures, due to their many advantageous properties, including low background charging currents, large current density related to convergent diffusion and importantly small diffu

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Fast and Simple Electrochemical Analysis Kit for Quality Control of Narrow Therapeutic Index Drugs

Guedes

Santos

2018

Electroanalysis

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The use of multiple‐pulse amperometry (MPA) for the determination of narrow therapeutic index (NTI) drugs using batch injection analysis (BIA) with carbon screen‐printed electrodes (SPE) is proposed, seeking to develop a practical and low‐cost analysis kit for application in routine quality control of these drugs. The electrochemical behaviors of aminophylline, carbamazepine, clindamycin, colchicine, minoxidil, prazosin, procainamide, theophylline, warfarin and verapamil were evaluated in different electrolytes, but just one, the 0.1 mol L−1 phosphate buffer, pH 7.0, was chosen for determination of all the analytes. The amperometric detection was optimized as a function of the best oxidation potential for carbon SPE for each analyte, which was in a range from 0.7 to 1.1 V. The injection conditions were determined as a function of the velocity and the volume injected by the BIA system, which were 92.5 μL s−1 and 100 μL, respectively. Under these conditions, a good repeatability (RSD<3 %), high analytical frequency (>215 determinations per hour), large linear ranges and low LOD (<0.42 μmol L−1) for all the NTI drugs were obtained. Furthermore, the proposed method provided an easy qualitative analysis of the investigated analytes using MPA detection. The addition‐recovery studies in pharmaceutical samples containing NTI drugs and the comparison with official methods showed that the proposed analysis Kit is a very fast, simple and efficient alternative for quantification of these analytes.

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Synthesis and characterization of glucose-capped CdSe quantum dots. Electrochemical and computational studies of corresponding carbon-ionic liquid electrode for quantitative determination of minoxidil

Cited by 18 publications

References 33 publications

Size-dependent exciton binding energy in semiconductor nanostructures

Size-dependent exciton binding energy in semiconductor nanostructures

A Dense Manganese Porphyrin-Nanobar Random Arrays: Direct and Electrocatalytic Oxidation of Ascorbic Acid in the Presence of Dopamine and Uric Acid

Fast and Simple Electrochemical Analysis Kit for Quality Control of Narrow Therapeutic Index Drugs

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