The gamma radiation effect on the surface morphology and optical properties of alpha-methyl curcumin: PMMA film

Jebur, Jabbar H.; Hassan, Qusay M.A.; Al-Mudhaffer, Mohammed F.; Al-Asadi, Ahmed S.; Elias, Rita S.; Saeed, Bahjat A.; Emshary, C.A.

doi:10.1088/1402-4896/ab5ca0

Cited by 20 publications

(7 citation statements)

References 57 publications

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“…The first one was the presence of the singlet signal at 2.2 ppm due to the enol form of the methyl proton directly attached to the alkene carbon. The second is the presence of two signals one doublet at 1.3 ppm and the second was quartet at 4.6 ppm due to keto form methyl protons directly attached to the α-carbon adjacent to the carbonyl groups and methine proton respectively which in agreement with previous results (16,17,21) . The 13 C NMR spectra show signals for both keto and enol forms (21,22) .…”

Section: Curcuminoids (1-7)supporting

confidence: 92%

Synthesis, Characterization, and Antibacterial Activity Study of Novel Curcuminoids Derivatives

M. AL-Hakiem,

Q. Alderawy,

Adnan

et al. 2024

IJPS

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Curcumin is a well-known compound with broad spectrum biological activities, but unfortunately rapid degradation properties and low bioavailability. Therefore, several attempts have been made to overcome these obstructions through chemical modifications. This investigation aimed to prepare several curcuminoids and their pyrazole derivatives and study their antibacterial activity. Curcuminoids and their pyrazole derivatives were synthesized, and their Chemical structures were established from their mass, 1H NMR, and 13C NMR spectra, followed by an in vitro study of the antibacterial activity of these compounds against the gram-negative Escherichia coli and the gram-positive Staphylococcus aureus using disc diffusion method. No compound has recorded any activity against Escherichia coli, while compounds 1-9 have shown anti-staphylococcus activity, compounds 11-14 didn’t present any activity, and compound 10 shows activity at the lowest studied concentration only. These findings suggest that the pyrazole substitution on curcumin derivatives that do not bear an aromatic hydroxyl group would diminish their anti-staphylococcal activity. More antibacterial activity studies are suggested regarding compound 10 activity

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Section: Curcuminoids (1-7)supporting

confidence: 92%

Synthesis, Characterization, and Antibacterial Activity Study of Novel Curcuminoids Derivatives

M. AL-Hakiem,

Q. Alderawy,

Adnan

et al. 2024

IJPS

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“…[33,36,59] Curcumin was studied in a number of scientific applications. [60][61][62] We have been engaged in the period 2018-2020 in the study and improve the nonlinear properties of bisdemethoxycurcumin, [63] curcumin, dimethoxycurcumin, chlorocurcumin, [64] alphamethyl curcumin: PMMA film using gamma radiation, [65] and two dihydropyridones derived from curcumin. [66] The main objective of the current study is to find new materials, such as curcumin compounds, as far as we know, its nonlinear optical (NLO) properties have not been studied previously, that has high NLO properties, for the purpose of using it in photonic applications such as the optical limiter, optical switch, and others.…”

Section: Introductionmentioning

confidence: 99%

“…[ 33,36,59 ] Curcumin was studied in a number of scientific applications. [ 60–62 ] We have been engaged in the period 2018–2020 in the study and improve the nonlinear properties of bisdemethoxycurcumin, [ 63 ] curcumin, dimethoxycurcumin, chlorocurcumin, [ 64 ] alphamethyl curcumin: PMMA film using gamma radiation, [ 65 ] and two dihydropyridones derived from curcumin. [ 66 ]…”

Section: Introductionmentioning

confidence: 99%

Synthesis, optical nonlinear properties, and all‐optical switching of curcumin analogues

Faisal

Hassan

Alsalim

et al. 2022

J of Physical Organic Chem

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The curcumin analogues (Cur‐MeS and Cur‐MeO) are synthesized using the 3‐chloroacetyl acetone and aromatic aldehydes reaction. Both compounds are characterized using FTIR, LC‐MS, 1H NMR, and 13C NMR spectroscopies. The geometric optimization and thermodynamic properties of the two compounds are carried out theoretically using DFT. The highest HOMO, lowest LUMO, and Mullikan atom charges of the two compounds are calculated using the B3LYP and CAM‐B3LYP methods which are hybrid functionals with a 6‐311+G(2d,p) as the basis set. The nonlinear optical (NLO) properties of both compounds are studied using the spatial self‐phase modulation (SSPM) through the diffraction ring patterns (DRPs) and the Z‐scan techniques, using a continuous wave (cw) low power 473 nm laser beam. The index of nonlinear refraction (INR) of both compounds is calculated by the two techniques. The all‐optical switching property of both samples is tested using two visible cw laser beams.

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“…This technique has been used during the last three decades by many researchers to calculate the n 2 and ( ) c 3 of vast number of materials [23][24][25][26][27][28][29][30][31][32][33]. In the indirect measurements the use of the results of the absorption and transmission spectra of the material and theoretical formulas for calculating the nonlinear optical third-order susceptibility and nonlinear index of refraction, also this method was used by researchers in recent years [34][35][36][37][38][39][40][41][42][43].…”

Section: Introductionmentioning

confidence: 99%

Characterizing optical and morphological properties of Eriochrome Black T doped polyvinyl alcohol film

et al. 2020

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Eriochrome Black T doped polyvinyl alcohol film was prepared on a glass substrate via the casting method. Optical microscope image of the film was taken by an optical microscope and analyzed by an Image J and origin 2008 software where it was proved that the film was free of defects and holes and uniformly distributed over entire area of the substrate. The optical constants of the film were calculated via the optical absorbance and transmittance in the wavelength range 350–900 nm via the use of a set of known mathematical formulas together with Wemple and DiDomenico model. The optical conductivity and the electrical conductivity of the prepared film in response to external electric filed are obtained using two more equations where it was found that the prepared film have high optical conductivity of the order of 1012 s−1 and an electrical conductivity of the order of 104 (S cm−1).

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The gamma radiation effect on the surface morphology and optical properties of alpha-methyl curcumin: PMMA film

Cited by 20 publications

References 57 publications

Synthesis, Characterization, and Antibacterial Activity Study of Novel Curcuminoids Derivatives

Synthesis, Characterization, and Antibacterial Activity Study of Novel Curcuminoids Derivatives

Synthesis, optical nonlinear properties, and all‐optical switching of curcumin analogues

Characterizing optical and morphological properties of Eriochrome Black T doped polyvinyl alcohol film

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