We propose a one-pot microwave-assisted pyrolysis method for fabrication of magnetofluorescent carbon quantum dots (MFCQDs), using combination waste crab shell and three different transition-metal ions, Gd3+, Mn2+, Eu3+, referred to as Gd@CQDs, Mn@CQDs, Eu@CQDs, respectively. Chitin from acted not only source but also chelating ligand form complexes with ions. Gd@CQDs exhibited high r1 relaxivity 4.78 mM–1·s–1 low r2/r1 ratio 1.33, suggesting that they show excellent potential T1 contrast...

The membrane-bound acetylcholine receptor from Torpedo marmorata was photolabeled by the noncompetitive channel blocker [3H]chlorpromazine under equilibrium conditions in presence of agonist. Incorporation radioactivity into all subunits occurred and reduced addition phencyclidine, a specific ligand for high-affinity site blockers. delta subunit purified digested with trypsin, resulting fragments were fractionated reversed-phase HPLC. labeled peptide could not be to homogeneity because its...

The design and formation of a linear assembly gold nanorods using biomolecular recognition system are described. Anti-mouse IgG was immobilized on the {111} end faces through thioctic acid containing terminal carboxyl group. biofunctionalized can be assembled with desired length mouse for biorecognition binding. to extended nanorod chains, which as long 3 µm. These nanostructures may used precursors future nanodevices.

Amino acids labelled with dimethylaminoazobenzenesulphonyl chloride can be separated by reversed-phase high-pressure liquid chromatography and detected in the visible region (436 nm). All 19 naturally occurring amino on a Zorbax ODS column employing two different gradient systems consisting of an acetonitrile/aqueous buffer mixture. As little as 2--5 pmol individual dimethylaminoazobenzenesulphonyl-amino acid quantitatively analysed reliability, only 10--30 ng...

We report the effect of initial Ag : In stoichiometry, capping ligand concentration, and reaction temperature on optical properties (such as photoluminescence [PL] quantum yield, PL full width at half-maximum, wavelength maximum emission) AgInS2 dots (QDs). The fabricated QDs exhibit excellent characteristics, including yields up to 22% appearance an excitonic absorption peak. This is first reported observation such a well-defined exciton feature in QDs. Its could indicate relatively narrow...

Surface modified and bioconjugated quantum dots (QDs) are of central importance in biomedical applications. In this regard, particularly I-III-VI QDs specific interest for biosensors, multimodal imaging, chemotherapy phototherapy theranostic modification allows management the physico-chemical properties, biocompatibility, pharmacological properties. This review is anticipated to provide an introduction new researchers about type relating their synthesis, optical surface modification,...

This paper reports the development of a multifunctional nanocarrier platform consisting paramagnetic graphene quantum dots, folate, and doxorubicin for simultaneous fluorescence MR imaging, cancer treatment.

Herein, we report the chemical synthesis of NiFe2O4 thin films forming nanosheet-, nanoflower-, and nanofeather-like morphologies using NiCl2·6H2O, Ni(NO3)2·6H2O, NiSO4·6H2O nickel salt precursors, respectively, while same iron precursor. A nanostructure formation mechanism is proposed in detail coordination chemistry theory. Interestingly, nanostructures nanosheets revealed a maximum surface area 47 m2 g–1, which was higher than those nanoflowers nanofeathers (25 11 g–1). Similarly,...

A Cu(2)S-CuInS(2)-ZnSe quantum dot (QD)-sensitized solar cell with cascaded energy gap structures has been fabricated. Under simulated illumination (AM 1.5, 100 mW cm(-2)), the best device is obtained a QD-sensitized cell, yielding power conversion efficiency of 2.52%.

In this paper, we describe relationships between the morphologies and power conversion efficiencies (PCE) of perovskite photovoltaics having a conventional p-i-n heterojunction structure, indium tin oxide (ITO)/poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS)/CH(3)NH(3)PbI(3-x)Cl(x)/PC(61)BM/Al. The PCE such device is highly dependent on morphology film, which governed by concentrations its precursors annealing conditions. A two-step process allowed sufficient...

This article describes a CuInS2 quantum dot (QD)-sensitized solar cell (QDSSC) with multilayered architecture and cascaded energy-gap structure fabricated using successive ionic-layer adsorption reaction process. We initially used different metal chalcogenides as interfacial buffer layers to improve unmatched band alignments between the TiO2 QD sensitizers. In this design, photovoltaic performance, in terms of short-circuit current density (JSC), open-circuit voltage (VOC), fill factor (FF),...

In this study, bimetallic platinum/gold nanoparticles (Pt/Au NPs) were found to exhibit peroxidase-like activity, and the deposition of mercury was switch enzymatic activity a catalase-like activity. Based on phenomenon, we developed new method for detecting ions through their Pt/Au NPs catalytic NPs. could be easily prepared reduction Au3+ Pt4+ by sodium citrate in one-pot synthesis. The peroxidase controlled varying ratios Pt Au. Pt0.1/Au (prepared with [Au3+]/[Pt4+] molar ratio 9.0/1.0)...

3-D ZnFe₂O₄/FSSM-300 nano-flakes on flexible stainless steel mesh as anode and Ni(OH)₂/FSSM-300 cathode was used to fabricate an asymmetric supercapacitor.

The surface of Ti3C2 MXene nanosheets (TC NSs) was first modified with the antioxidants sodium ascorbate (SA) and dopamine (DA) (DSTC NS) to improve their stability in oxidative hydration environments thereby bioapplications. This novel approach not only improved by arresting oxidation but also increased available functional groups for further functionalization various biomolecules. DSTC NSs were then sequentially conjugated enzyme glucose oxidase (GOx) photosensitizer Ce6 render obtained...

MXene composites with different metal oxides have recently demonstrated good electrochemical performance enhanced conductivity and also hinder the restacking of MXene. With this motivation, we synthesized nickel oxide@MXene (NO@MXene) series varying compositions, which was screen-printed on a flexible stainless-steel mesh (FSSM) substrate as an anode for supercapacitor. The effect sample composition, i.e., 5% NO@MX, 10% 15% 20% properties is studied systematically. NO@MX composite electrode...