Results 1 to 10 of about 220,714 (262)

The effects of solvents and structure on the electronic absorption spectra of the isomeric pyridine carboxylic acid N-oxides [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2013
The ultraviolet absorption spectra of the carboxyl group of three isomeric pyridine carboxylic acids N-oxides (picolinic acid N-oxide, nicotinic acid N-oxide and isonicotinic acid N-oxide) were determined in fourteen solvents in the wavelength range ...
Drmanić Saša Ž.   +4 more
doaj   +4 more sources

Optoelectronic properties of piperidine under hydrostatic pressure, temperature, and the companion inhibition activity by DFT and molecular docking approaches [PDF]

open access: yesScientific Reports
The optoelectronic and biophysical properties of Piperidine with a monoclinic crystal structure are investigated under hydrostatic pressure and temperature.
Nahid Doulatpour   +3 more
doaj   +2 more sources

Fabrication and characterization of plasmonic band-stop filter using Ag grating [PDF]

open access: yesEPJ Web of Conferences, 2020
This study proposes a plasmonic band-stop filter with surface plasmon resonance in a doublelayer wire grid structure targeting short-wavelength visible and near-ultraviolet regions for applications in ultraviolet photography.
Motogaito Atsushi   +2 more
doaj   +1 more source

Solvent effect on electronic absorption spectra of cyclohex-1-enylcarboxylic and 2-methylcyclohex-1-enylcarboxylic acids [PDF]

open access: yesJournal of the Serbian Chemical Society, 2000
The ultraviolet absorption spectra of cyclohex-1-enylcarboxylic acid and 2-methylcyclohex-1-enylcarboxylic acid were determined in six protic and nine aprotic solvents in the wavelength range from 200 to 400 nm.
VERA V. KRSTIC   +2 more
doaj   +2 more sources

Solvent effect on electronic absorption spectra of some 2-aminobenzimidazoles [PDF]

open access: yesActa Periodica Technologica, 2002
The effect of protic and aprotic solvents on electronic apsorption spectra of 1-(3-X-benzil)-2-aminobenzimidazoles (X=CH3;OCH3; Cl) was examined. UV-apsorption spectra (200-400 nm) were recorded in five protic and four aprotic solvents. Batochromic shift
Perušić-Janjić Nada U.   +2 more
doaj   +1 more source

Ultraviolet (UV) Spectrophotometric Analysis of Ketoprofen in Tablets–Statistical Validation of Proposed Method

open access: yesMaterials Proceedings, 2023
The aim of this paper was to exactly quantify the amount of pure ketoprofen within a pharmaceutical by a newly developed ultraviolet (UV) spectrophotometric method.
Cristian-Catalin Gavat
doaj   +1 more source

Original boron cluster covalent with poly-zwitterionic BODIPYs for boron neutron capture therapy agent

open access: yesPolymer Testing, 2021
Currently, boron neutron capture therapy(BNCT) is the most innovative and promising highly selective targeted radiotherapy for cancer. Therefore, this paper designed and synthesized two kinds of boron-polymers, wrapped in the same fluorophore -BODIPYs ...
Feng Zhao   +3 more
doaj   +1 more source

Optical Properties of New Third-Order Nonlinear Materials Modified by Click Chemistry

open access: yesMolecules, 2022
A high-yielding click reaction was used to synthesize a series of highly conjugated, symmetrical, as well as asymmetrical compounds with a benzene core. Cyclic voltammetry and ultraviolet/visible absorption spectroscopy were carried out, and proved that ...
Yuzhen Zhao   +7 more
doaj   +1 more source

Plant color adaptation to solar radiation: A study of qualitative and quantitative characteristics [PDF]

open access: yesPresent Environment and Sustainable Development, 2023
This paper investigated latitudinal and seasonal variations in the qualitative characteristics of solar radiation (spectral composition, position of the maximum and short-wave boundary) in the ultraviolet and visible regions. It has been established that,
Irina KOLOMIETS
doaj   +1 more source

A phenomenological model for the X-ray spectrum of Nova V2491 Cygni [PDF]

open access: yes, 2011
The X-ray flux of Nova V2491 Cyg reached a maximum some forty days after optical maximum. The X-ray spectrum at that time, obtained with the RGS of XMM-Newton, shows deep, blue-shifted absorption by ions of a wide range of ionization.
C. Pinto   +37 more
core   +4 more sources

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