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2001 1
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Page 1
Antiureolytic activity of new water-soluble thiadiazole derivatives: Spectroscopic, DFT, and molecular docking studies.
H J Al-Qaisi Z, Al-Garawi ZS, M Al-Karawi AJ, Jasim Hammood A, Mosaad Abdallah A, Clegg W, Mohamed GG. H J Al-Qaisi Z, et al. Spectrochim Acta A Mol Biomol Spectrosc. 2022 May 5;272:120971. doi: 10.1016/j.saa.2022.120971. Epub 2022 Jan 31. Spectrochim Acta A Mol Biomol Spectrosc. 2022. PMID: 35152095
The results showed that both compounds have potentially inhibited the enzyme activity with respect to their IC(50) values: 13.76 M 0.15 for 1, and 18.81 M 0.18 for 2. These values are even lower than that of thiourea (21.40 0.21 M) as a standard inhibitor. .. …
The results showed that both compounds have potentially inhibited the enzyme activity with respect to their IC(50) values: 13.76 M 0. …
Pheromones mediating copulation and attraction in Drosophila.
Dweck HK, Ebrahim SA, Thoma M, Mohamed AA, Keesey IW, Trona F, Lavista-Llanos S, Svatoš A, Sachse S, Knaden M, Hansson BS. Dweck HK, et al. Proc Natl Acad Sci U S A. 2015 May 26;112(21):E2829-35. doi: 10.1073/pnas.1504527112. Epub 2015 May 11. Proc Natl Acad Sci U S A. 2015. PMID: 25964351 Free PMC article.
Here we show that Or47b-and Or88a-expressing olfactory sensory neurons (OSNs) detect the fly-produced odorants methyl laurate (ML), methyl myristate, and methyl palmitate. Fruitless (fru(M))-positive Or47b-expressing OSNs detect ML exclusively, and Or47b- and Or47b-express …
Here we show that Or47b-and Or88a-expressing olfactory sensory neurons (OSNs) detect the fly-produced odorants methyl laurate (ML), methyl m …
Use of computational and wet lab techniques to examine the molecular association between a potent hepatitis C virus inhibitor, PSI-6206 and human serum albumin.
Abubakar M, Mohamed SB, Abd Halim AA, Tayyab S. Abubakar M, et al. Spectrochim Acta A Mol Biomol Spectrosc. 2023 Jun 5;294:122543. doi: 10.1016/j.saa.2023.122543. Epub 2023 Feb 23. Spectrochim Acta A Mol Biomol Spectrosc. 2023. PMID: 36868020
This discovery was backed by the alteration of the HSA UV absorption spectrum, a larger value (>10(10) M(-1).s(-1)) of the bimolecular quenching rate constant (kq) and the AFM-guided swelling of the HSA molecule, in the presence of PSI. Moreover, the fluorescence titrat …
This discovery was backed by the alteration of the HSA UV absorption spectrum, a larger value (>10(10) M(-1).s(-1)) of the bimolec …
Nitrogen doped graphene quantum dots based on host guest interaction for selective dual readout of dopamine.
Mahmoud AM, Mahnashi MH, Alhazzani K, Az A, Algahtani MM, Alaseem A, Alyami BA, AlQarni AO, El-Wekil MM. Mahmoud AM, et al. Spectrochim Acta A Mol Biomol Spectrosc. 2021 May 5;252:119516. doi: 10.1016/j.saa.2021.119516. Epub 2021 Feb 1. Spectrochim Acta A Mol Biomol Spectrosc. 2021. PMID: 33561682
Under the optimized conditions, the colorimetric method achieved linearity range of 0.12-7.5 M and LOD (S/N = 3) of 0.04 M, while the fluorometric method achieved linearity range of 0.028-1.5 M and LOD (S/N = 3) of 0.009 M. ...
Under the optimized conditions, the colorimetric method achieved linearity range of 0.12-7.5 M and LOD (S/N = 3) of 0.04 M, wh …
Photoluminescence detection of nadifloxacin: Adopts switching off photoinduced electron transfer (PET).
Mohamed AA, Omar MA, Derayea SM, Elsayed MA, Mostafa IM. Mohamed AA, et al. Spectrochim Acta A Mol Biomol Spectrosc. 2024 Jan 15;305:123451. doi: 10.1016/j.saa.2023.123451. Epub 2023 Sep 23. Spectrochim Acta A Mol Biomol Spectrosc. 2024. PMID: 37769466
The introduced method relies on blocking the photoinduced electron transfer (PET) effect of the nitrogen atom presented on the piperidine ring in NDF by fine-tuning the pH of the surrounding medium through its protonation using 0.5 M acetic acid. This protonation turns the …
The introduced method relies on blocking the photoinduced electron transfer (PET) effect of the nitrogen atom presented on the piperidine ri …
Bifunctional ratiometric sensor based on highly fluorescent nitrogen and sulfur biomass-derived carbon nanodots fabricated from manufactured dairy product as a precursor.
Mohamed RMK, Mohamed SH, Asran AM, Alsohaimi IH, Hassan HMA, Ibrahim H, El-Wekil MM. Mohamed RMK, et al. Spectrochim Acta A Mol Biomol Spectrosc. 2023 May 15;293:122444. doi: 10.1016/j.saa.2023.122444. Epub 2023 Feb 4. Spectrochim Acta A Mol Biomol Spectrosc. 2023. PMID: 36758366
The proposed sensing platform sensitively detected Cu (II) and risedronate sodium in the range of 0.01-55 muM and 5.02-883 M with LODs (S/N = 3) of 0.003 muM and 1.48 M, respectively. The sensing platform exhibited a good selectivity towards Cu (II) and risedronate …
The proposed sensing platform sensitively detected Cu (II) and risedronate sodium in the range of 0.01-55 muM and 5.02-883 M with LOD …
Ratiometric fluorescence sensing of hazardous ciprofloxacin based on aggregation induced emission enhancement of thiolate-protected gold nanoclusters induced by La3+ ion.
Mahmoud AM, Mahnashi MH, El-Wekil MM. Mahmoud AM, et al. Spectrochim Acta A Mol Biomol Spectrosc. 2024 Jan 5;304:123347. doi: 10.1016/j.saa.2023.123347. Epub 2023 Sep 5. Spectrochim Acta A Mol Biomol Spectrosc. 2024. PMID: 37688885
Under optimized conditions, the fluorescence ratios (F(440)/F(610)) were linearly increased with increasing the CIPRO amount within the range of 0.003-200 M with a limit of detection equal to 0.2 nM (S/N = 3). The as-fabricated La(3+)/GSH@AuNCs system possesses outstanding …
Under optimized conditions, the fluorescence ratios (F(440)/F(610)) were linearly increased with increasing the CIPRO amount within the rang …
Azo-methoxy-calix[4]arene complexes with metal cations for chemical sensor applications: Characterization, QTAIM analyses and dispersion-corrected DFT- computations.
Gassoumi B, Echabaane M, Ben Mohamed FE, Nouar L, Madi F, Karayel A, Ghalla H, Castro ME, Melendez FJ, Özkınalı S, Rouis A, Ben Chaabane R. Gassoumi B, et al. Spectrochim Acta A Mol Biomol Spectrosc. 2022 Jan 5;264:120242. doi: 10.1016/j.saa.2021.120242. Epub 2021 Jul 30. Spectrochim Acta A Mol Biomol Spectrosc. 2022. PMID: 34358783
Sensing performances are determined with a linear range from 10(-5.2) to 10(-2.2) M. The Si/SiO(2)/Si(3)N(4)/azo-methoxy-calix[4]arene structure is a promoter to have a good performance sensor....
Sensing performances are determined with a linear range from 10(-5.2) to 10(-2.2) M. The Si/SiO(2)/Si(3)N(4)/azo-methoxy-calix[4]aren …
A reliable and selective ratiometric sensing probe for fluorometric determination of P2O74- based on AIE of GSH@CuNCs-assisted by Al-N@CQDs.
Mahmoud AM, Abu-Alrub SS, Al-Qarni AO, El-Wekil MM, Shahin RY. Mahmoud AM, et al. Spectrochim Acta A Mol Biomol Spectrosc. 2024 Apr 5;310:123850. doi: 10.1016/j.saa.2024.123850. Epub 2024 Jan 9. Spectrochim Acta A Mol Biomol Spectrosc. 2024. PMID: 38219614
The response ratio (F(450)/F(620)) increased with increasing the concentration of P(2)O(7)(4-) in the range of 0.035-160 M, with an impressive detection limit of 0.012 M. This innovative approach of utilizing hybrid CQDs/thiolate-capped nanoclusters as a ratiometric …
The response ratio (F(450)/F(620)) increased with increasing the concentration of P(2)O(7)(4-) in the range of 0.035-160 M, with an i …
54 results