Luminescence
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Photoluminescence properties of a novel phosphor CaB2O4:Eu3+ under NUV excitation
Luminescence - Tập 24 Số 6 - Trang 363-366 - 2009
AbstractThe new borate phosphor CaB2O4:Eu3+ was synthesized by solid‐state
method and their photoluminescence properties were investigated. The results
show that the pure phase of CaB2O4 could be available at 900°C, CaB2O4:Eu3+
phosphor could be effectively excited by the near ultraviolet light (NUV)
(392 nm), and the luminescent intensity of CaB2O4:Eu3+ phosphor reached to the
highest when the do...
Application in photocatalytic degradation of zearalenone based on graphitic carbon nitride
Luminescence - Tập 37 Số 2 - Trang 190-198 - 2022
AbstractA semiconductor nano‐material was prepared, and its degradation
efficiency of zearalenone (ZEN) was studied. The photocatalytic material
graphitic carbon nitride (g‐C3N4) was synthesized by the traditional method of
hot cracking. Its structure was characterized by X‐ray diffraction (XRD),
Fourier‐transform infrared (FTIR), X‐ray photoelectron spectroscopy (XPS),
scanning electron microscop...
Effect of heteroatom‐doped carbon quantum dots on the red emission of metal‐conjugated phthalocyanines through hybridization
Luminescence - Tập 37 Số 2 - Trang 268-277 - 2022
AbstractQuantum dots (QDs) are significant fluorescent materials for energy
transfer studies with phthalocyanines (Pcs) and phthalocyanine (Pc)‐like
biomolecules (such as chlorophylls). Carbon‐based QDs, especially, have been
used in numerous studies concerning energy transfer with chlorophylls, but the
numbers of studies concerning energy transfer between phthalocyanines and
carbon‐based QDs are ...
Increasing the specificity of the forensic luminol test for blood
Luminescence - Tập 16 Số 3 - Trang 251-253 - 2001
AbstractIt is shown that the presumptive luminol chemiluminescence test for the
presence of traces of blood can be made more determinative by measuring the peak
emission wavelength of the luminol chemiluminescence. When sprayed onto a
surface containing traces of human haemoglobin, a 1 g/L solution of aqueous
luminol containing 7 g/L sodium perborate gives an emission peak at 455 ± 2 nm,
whereas t...
Development of a robust reporter gene assay for measuring the bioactivity of OX40‐targeted therapeutic antibodies
Luminescence - Tập 36 Số 4 - Trang 885-893 - 2021
AbstractOX40 plays a prominent role in the onset and development of solid
tumors, and OX40‐targeted monoclonal antibodies (mAbs) have entered clinical
trials for various tumors. Bioactivity determination of therapeutic mAbs is of
great significance in product quality, however, mechanism of action‐based
bioassays to determine the bioactivity of anti‐OX40 mAbs is still lacking. Here,
we established ...
Construction of photodynamic‐effect immunofluorescence probes by a complex of quantum dots, immunoglobulin G and chlorin e6 and their application in HepG2 cell killing
Luminescence - Tập 31 Số 6 - Trang 1174-1181 - 2016
AbstractIn this study, tri‐functional immunofluorescent probes (Ce6–IgG–QDs)
based on covalent combinations of quantum dots (QDs), immunoglobulin G (IgG) and
chlorin e6 (Ce6) were developed and their photodynamic ability to induce the
death of cancer cells was demonstrated. Strategically, one type of
second‐generation photosensitizer, Ce6, was first coupled with anti‐IgG antibody
using the EDC/NHS...
Energy transfer analysis and realization of cool to warm white light in Dy3+/Sm3+/Er3+ triply doped multicomponent borosilicate glass for white light generation
Luminescence - Tập 36 Số 6 - Trang 1422-1434 - 2021
AbstractA series of Dy3+/Sm3+/Er3+ triply doped multicomponent borosilicate
glasses (DSE) was synthesized using varying Er3+ ions concentrations through a
conventional melt quenching technique. The influence of triple doping on the
optical characteristics of the prepared glass was evaluated to estimate the
possibility of achieving white light emission through optical absorption,
photoluminescence ...
Superoxide anion radical scavenging property of catecholamines
Luminescence - Tập 28 Số 4 - Trang 450-455 - 2013
ABSTRACTThe direct effect of the four catecholamines (adrenaline, noradrenaline,
dopamine and isoproterenol) on superoxide anion radicals () was investigated.
The reaction between 18‐crown‐6‐ether and potassium superoxide in
dimethylsulfoxide was used as a source of . The reactivity of catecholamines
with was examined using chemiluminescence, reduction of nitroblue tetrazolium
and electron paramag...
Scavenging of hydroxyl radical by catecholamines
Luminescence - Tập 27 Số 6 - Trang 473-477 - 2012
ABSTRACTThe direct effects of the four catecholamines (CATs), adrenaline (A),
noradrenaline (NA), dopamine (D) and isoproterenol (I), on free radicals were
investigated using the free radical 2,2‐diphenyl‐1‐picrylhydrazyl (DPPH•) and
hydroxyl radial (HO•). The CATs examined were found to inhibit the ESR signal
intensity of DPPH• in a dose‐dependent manner over the range 0.1–2.5 mmol/L in
the follo...
Effect of γ‐irradiation on optical properties of Eu2O3‐doped polystyrene polymer films
Luminescence - Tập 33 Số 7 - Trang 1243-1248 - 2018
AbstractIn the present study, europium (III) oxide (Eu2O3)‐doped polystyrene
(PS) polymer films were synthesized using a solution‐casting technique for
different filler levels. These films were irradiated with 5, 25 and 50 kGy γ
doses and characterized using various techniques, viz. X‐ray diffraction (XRD),
and UV–visible and photoluminescence (PL) spectroscopies as a function of
composition level...
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