Linda Váradi

ORCID: 0000-0001-9478-9038
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About
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Research Areas
  • Crystallization and Solubility Studies
  • X-ray Diffraction in Crystallography
  • Oxidative Organic Chemistry Reactions
  • Synthesis and Characterization of Pyrroles
  • Crystallography and molecular interactions
  • Analytical Chemistry and Sensors
  • Peptidase Inhibition and Analysis
  • Pneumocystis jirovecii pneumonia detection and treatment
  • Molecular Sensors and Ion Detection
  • Synthesis and Biological Evaluation
  • Metal-Organic Frameworks: Synthesis and Applications
  • Pneumonia and Respiratory Infections
  • Biosensors and Analytical Detection
  • Antibiotic Resistance in Bacteria
  • Asymmetric Synthesis and Catalysis
  • Bacterial biofilms and quorum sensing
  • Dyeing and Modifying Textile Fibers
  • Bacterial Identification and Susceptibility Testing
  • Analytical chemistry methods development
  • Bacterial Infections and Vaccines
  • Cyclopropane Reaction Mechanisms
  • Medicinal Plants and Neuroprotection
  • Click Chemistry and Applications
  • Vanadium and Halogenation Chemistry
  • Cholinesterase and Neurodegenerative Diseases

RMIT University
2019-2023

University of Sunderland
2012-2020

The University of Sydney
2014-2019

CSIRO Manufacturing
2017-2019

Clayton Foundation
2019

Commonwealth Scientific and Industrial Research Organisation
2018

Cooperative Trials Group for Neuro-Oncology
2016

Budapest University of Technology and Economics
2010

First Technical University
2007

Abstract Despite their impressive optical properties, lead halide perovskite quantum dots (PQDs) have not realized potential, especially in bioimaging applications, as they suffer from poor moisture and thermal stability, solvent incompatibility, significant toxicity. Here, a spray‐assisted coil–globule transition method for encapsulating CsPbBr 3 (CPB) PQDs into poly(methyl methacrylate) (PMMA) polymer nanospheres is reported. Polyvinylpyrrolidone‐capped CPB are synthesized via the ligand...

10.1002/smll.201803156 article EN Small 2018-11-16

The ursane triterpenoids, asiatic acid 1 and madecassic 2, are the major pharmacological constituents of Centella asiatica, commonly known as Gotu Kola, which is used traditionally for treatment anxiety improvement cognition memory. Using two-electrode voltage-clamp technique, these triterpenes, some semisynthetic derivatives, were found to exhibit selective negative modulation different subtypes GABAA receptor expressed in Xenopus laevis oocytes. Despite differing by only one hydroxyl...

10.1111/cbdd.12766 article EN Chemical Biology & Drug Design 2016-04-10

Experimental and theoretical charge density of piroxicam, saccharin their 1 : co-crystal have been determined using high-resolution X-ray diffraction, multipole refinement DFT calculations

10.1039/c6ra10411h article EN RSC Advances 2016-01-01

Metal–organic frameworks (MOFs) are extensively studied materials for delivering a wide range of therapeutic entities including nucleic acids. Protein corona from serum may change biological identity and properties these biocomposites.

10.1039/d3ma00391d article EN cc-by Materials Advances 2023-01-01

Several novel fluorogenic N-aminoacylnaphthyridine substrates were synthesized in good yield and tested for their ability to detect pathogenic bacteria agar-based cell culture. Simple 2-N-(β-alanyl)amino-5,7-dialkylnaphthyridine selectively hydrolysed by β-alanylaminopeptidase expressing bacteria, but subject diffusion the agar medium. Diffusion was reduced 2-N-(β-alanyl)amino-7-alkylnaphthyridine with longer alkyl chains, inhibition of growth increased....

10.1039/c2ob06986e article EN Organic & Biomolecular Chemistry 2012-01-01

Experimental charge density distribution studies of two polymorphic forms piroxicam, β-piroxicam (1) and piroxicam monohydrate (2), were carried out via high-resolution single crystal X-ray diffraction experiments multipole refinement. The asymmetric unit (2) consists discrete molecules, (2a) (2b), water molecules. Geometry differs between due to the zwitterionic nature which results in rotation pyridine ring around C(10)-N(2) bond by approximately 180°. Consequently, amide are no longer...

10.1039/c6cp02690g article EN Physical Chemistry Chemical Physics 2016-01-01

Novel Griess reagents were identified using molecular fingerprint searching and rapid experimental evaluation for the detection of nitrite in aqueous media.

10.1039/c8ra07656a article EN cc-by-nc RSC Advances 2019-01-01

Given the increase in resistance to antibacterial agents, there is an urgent need for development of new agents with novel modes action. As interim solution, it also prudent reinvestigate old or abandoned compounds assess their efficacy context widespread conventional agents. In 1970s, much work was performed on peptide mimetics, exemplified by phosphonopeptide, alafosfalin. We investigated activity alafosfalin, di-alanyl fosfalin and β-chloro-L-alanyl-β-chloro-L-alanine against 297...

10.3390/molecules25061445 article EN cc-by Molecules 2020-03-23

The charge density distribution in 2,2′-dihydroxy-1,1′-naphthalazine (Pigment Yellow 101; P.Y.101) has been determined using high-resolution X-ray diffraction and multipole refinement, along with functional theory calculations.

10.1039/c4cp04302b article EN Physical Chemistry Chemical Physics 2015-01-01

The fluorogenic self-immolative substrates<bold>8</bold>are specifically hydrolyzed by β-alanyl aminopeptidase, resulting in a 1,6-elimination and the release of highly fluorescent hydroxycoumarins<bold>6</bold>.

10.1039/c6ra12875k article EN RSC Advances 2016-01-01

New fluorogenic enzyme substrates were synthesized by the coupling of aminonaphthalenesulfonamides or 6-hydrazinobenz[de]isoquinoline-1,3-diones with β-alanine. The also condensed a range aryl aldehydes to give corresponding hydrazones. photophysical properties amines and hydrazines their amide, hydrazide hydrazone derivatives, examined they incorporated into Columbia agar in order determine potential for detection pathogenic bacteria.

10.1016/j.dyepig.2015.09.031 article EN cc-by-nc-nd Dyes and Pigments 2015-10-15

Paracetamol (PCM) has two well-documented polymorphic forms at room temperature; monoclinic Form I is more stable than the other orthorhombic II. II exhibits improved tabletting properties compared to due low shearing forces; however, difficulties in its manufacture have limited use industrial manufacture. Previous studies found that introduction of a co-former form co-crystals would allow PCM molecule exist conformation similar while being temperature. Experimental charge density analysis...

10.3390/cryst8010046 article EN cc-by Crystals 2018-01-18

A series of fluorescent coumarin derivatives 2a-e were systematically designed, synthesized and studied for their Cu2+ sensing performance in aqueous media. The sensitivities selectivities the on-to-off signal direct correlation with relative arrangements heteroatoms within coordinating moieties these coumarins. Probes 2b 2d exhibited concentration dependent selective fluorescence quenching, linear ranges 0-80 μM 0-10 μM, limits detection 0.14 0.38 respectively. Structural changes upon...

10.3390/molecules24193569 article EN cc-by Molecules 2019-10-02

A new method for converting 1,2,3,5,6,10b-hexahydropyrrolo[2,1-a]isoquinolines into 5,6-dihydropyrrolo[2,1-a]isoquinolines using N-bromosuccinimide as an oxidant is presented.

10.1055/s-2007-977461 article EN Synlett 2007-05-08

A new method for converting 1,2,3,5,6,10b-hexahydropyrrolo[2,1-a]isoquinolines into 5,6-dihydropyrrolo[2,1-a]isoquinolines by the use of N-bromosuccinimide as an oxidant is presented.

10.1055/s-0029-1217063 article EN Synthesis 2009-10-19

Selective detection of β-alanyl aminopeptidase (BAP)-producing Pseudomonas aeruginosa, Serratia marcescens, and Burkholderia cepacia was achieved by employing the blue-to-yellow fluorescent transition a BAP-specific enzyme substrate, 3-hydroxy-2-(p-dimethylaminophenyl)flavone derivative, incorporating self-immolative linker to β-alanine. Upon cellular uptake accumulation substrate viable bacterial colonies, blue fluorescence generated, while hydrolysis N-terminal peptide bond BAP resulted in...

10.3390/molecules24193550 article EN cc-by Molecules 2019-09-30

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at glance that was extracted from about 100 leading journals. To access of an article which published elsewhere, please select “Full Text” option. The original trackable via the “References”

10.1002/chin.201018147 article EN ChemInform 2010-04-09

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at glance that was extracted from about 200 leading journals. To access Abstract, please click on HTML or PDF.

10.1002/chin.200738150 article EN ChemInform 2007-08-30
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