A5059143421- Nanocluster Synthesis and Applications
- Advanced Nanomaterials in Catalysis
- Gold and Silver Nanoparticles Synthesis and Applications
- Organic Light-Emitting Diodes Research
- Crystallization and Solubility Studies
- Electrochemical sensors and biosensors
- X-ray Diffraction in Crystallography
- Analytical chemistry methods development
- Click Chemistry and Applications
- Conducting polymers and applications
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Metal complexes synthesis and properties
- Polyamine Metabolism and Applications
- Nanoplatforms for cancer theranostics
- Luminescence and Fluorescent Materials
- Advanced biosensing and bioanalysis techniques
- Analytical Chemistry and Sensors
Instituto de Nanociencia y Materiales de Aragón
2022-2025
Universidad de Zaragoza
2022-2025
One approach to reduce the side effects of chemotherapy in cancer treatment is photodynamic therapy (PDT), which allows spatiotemporal control cytotoxicity. We have used strategy coordinating π-expansive ligands increase excited state lifetimes Ir(III) half-sandwich complexes order facilitate generation 1O2. obtained derivatives formulas [Cp*Ir(C∧N)Cl] and [Cp*Ir(C∧N)L]BF4 with different degrees π-expansion C∧N ligands. Complexes more ligand are very effective photosensitizers phototoxic...
This paper explores, for the first time, use of flavo-enzymes enzymatic generation gold nanomaterials. It has been demonstrated that when oxidation glucose by GOx is carried out in presence Au(III), in-situ formation nanomaterials observed. Moreover, depending on experimental conditions, either nanoparticles (AuNPs) or nanoclusters (AuNCs) are better observed, whose spectroscopical properties can be related to concentration glucose. Working at pH 6, only AuNCs with fluorescence 420 nm...
This work details the enzymatic generation of fluorescence nanomaterials and use this optical signal as analytical parameter for quantification substrate. More specifically, fluorescent copper nanoclusters have been obtained during reaction tyramine oxidase in presence Cu(II); intensity being proportional to concentration tyramine. The show at 445 nm by excited 320 characterized TEM, EDX, XPS. formation mechanism has also studied, suggesting that under optimal conditions (0.1 M MES buffer pH...
In this manuscript a method for the fluorometric determination of tyramine is described. It based on direct reaction between Au(III) and in phosphate buffer which produces fluorescent gold nanoclusters (AuNC) (λexc = 320 nm, λem 410 nm) with diameter 1.50 ± 0.06 nm. The solutions are mixed after 140 s, solution added; fast stable fluorescence signal. formation AuNC demonstrated by STEM and, more importantly, could be followed Atomic Fluorescence Microscopy (AFM). allows range from 6.0x10-7 M...
In situ enzymatic generation of bimetallic nanoparticles, mainly Au/Pt, overcomes the drawbacks (continuous absorbance drift, modest LOQ, and long-time reaction) observed when AuNP alone are produced. this study, Au/Pt nanoparticles have been characterized by EDS, XPS, HRTEM images using determination tyramine with oxidase (TAO) as a model. Under experimental conditions, NPs show an absorption maximum at 580 nm which can be related to concentration in range 1.0 × 10-6M 2.5 10-4M RSD 3.4% (n...
New β-diketonate platinum (II) complexes, containing a cyclometalated N-heterocyclic carbene [Pt(NaphˆC*iPr)(acac)] (3A) (HNaphˆC*-κC* = 3-isopropyl-1-(naphthalen-2-yl)-1H-imidazole-2-ylidene), or pyrazole, [Pt(NaphˆNpz)(acac)] (3B) (HCˆNpz 1-(naphthalen-2-yl)-1H-pyrazole) and [Pt(NaphˆNdmpz)(acac)] (3B′) (HCˆNdmpz 1-(naphthalen-2-yl)-1H-3,5-dimethylpyrazole) have been prepared characterized. Their absorption emission properties in films of ethyl cellulose (EC) were determined along with...
This paper explores, for the first time, use of flavo-enzymes using glucose oxidase (GOx) as a model. When oxidation by GOx is carried out in presence Au(III), in-situ formation gold nanomaterials observed. Depending on experimental conditions, nanoparticles (AuNPs) or nanoclusters (AuNCs) are better observed whose spectroscopic properties (AuNPs plasmon AuNCs fluorescence) can be used determination. It has been found that working at pH 6, only with fluorescence 420 nm (λ ex = 335 nm)...
Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL Selective Generation of Gold Nanostructures Mediated by Flavo-Enzymes Develop Optical Biosensors 22 Pages Posted: 21 May 2022 See all articles Javier Camacho-AguayoJavier Camacho-Aguayoaffiliation not provided SSRNSusana de Marcosaffiliation SSRNVeronica Moraaffiliation SSRNJavier GalbanUniversity Zaragoza There are 2 versions paper Number pages: 20...