Month: December 2022

Kumar, Naresh published the artcileTuning of optical properties of p-phenyl ethenyl-E-furans: A Solvatochromism and Density functional theory, Product Details of C9H10O3, the main research area is phenylethenyl furan preparation optical electronic property substituent effect; Absorption; Density functional theory; Dipole moment; Fluorescence; Hyperpolarizability; Oscillator strength; Polarizability; Transition dipole moment.

P-Ph ethenyl-E-furans (1-6) with varied electron donor and acceptor substituent (NO2, CN, Cl, H, OCH3, NH2) were synthesized and studied the substituent induced optical properties (dipole moment, transition dipole moment, oscillator strength, optical band gap, hyperpolarizability) using Solvatochromism and D. functional theory. It is shown that furan acts as a weak electron donor in presence of an electron withdrawing p-Ph substituent (NO2, CN, Cl), whereas furan acts as a weak electron acceptor in presence of an electron donating p-Ph substituent (OCH3, NH2). In comparison to ethenylfuran 4, the HOMO-LUMO energy band gap is decreased upon increasing the electron donating or electron withdrawing nature of the Ph ring. Calculation of excited state dipole moment and polarizability of 1-6 in solvent of varying polarity suggest that the nitro and amino compounds (1, 6) exhibit charge transfer excited state, whereas excited state of compounds 3-5 is non-polar in nature. As compared to the ethenylfuran (4), the first hyperpolarizability (β) is increased in presence of a strong electron withdrawing or strong electron donating p-Ph substituent. The higher β value is found for ethenylfuran with p-nitrophenyl and p-amino Ph substitution. Overall, these studies provide useful information in tuning the optical properties of p-Ph substituted heterocyclic ethenyl systems.

Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy published new progress about Band gap. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Product Details of C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Jia, Shuaiqiang published the artcileHierarchical Metal-Polymer Hybrids for Enhanced CO2 Electroreduction, HPLC of Formula: 1455-77-2, the main research area is hierarchical metal polymer hybrid carbon dioxide electroreduction; CO2 reduction reaction; electrochemistry; hierarchical structures; materials science; metal-polymer hybrids.

The design of catalysts with high activity, selectivity, and stability is key to the electroreduction of CO2. Herein, we report the synthesis of 3D hierarchical metal/polymer-carbon paper (M/polymer-CP) electrodes by in situ electrosynthesis. The 3D polymer layer on CP (polymer-CP) was first prepared by in situ electropolymerization, then a 3D metal layer was decorated on the polymer-CP to produce the M/polymer-CP electrode. Electrodes with different metals (e.g. Cu, Pd, Zn, Sn) and various polymers could be prepared by this method. The electrodes could efficiently reduce CO2 to desired products, such as C2H4, CO, and HCOOH, depending on the metal used. For example, C2H4 could be formed with a Faradaic efficiency of 59.4% and a c.d. of 30.2 mA cm-2 by using a very stable Cu/PANI-CP electrode in an H-type cell. Control experiments and theor. calculations showed that the 3D hierarchical structure of the metals and in situ formation of the electrodes are critical for the excellent performance.

Angewandte Chemie, International Edition published new progress about Band gap. 1455-77-2 belongs to class isoquinoline, name is 3,5-Diamino-1,2,4-triazole, and the molecular formula is C2H5N5, HPLC of Formula: 1455-77-2.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Ali, Akbar published the artcileExploration of structural, electronic and third order nonlinear optical properties of crystalline chalcone systems: Monoarylidene and unsymmetrical diarylidene cycloalkanones, Application of 2,3-Dimethoxybenzaldehyde, the main research area is structure electronic third order nonlinear optical crystalline chalcone.

In the current study monoarylidene and unsym. diarylidene cycloalkanes, MBMHP, MABP, MBHP, and MBCP have been prepared Their mol. structures were confirmed by SC-XRD. Accompanying the exptl. studies, quantum chem. investigation is performed at the M06/6-311+G(d,p) level, with the natural bond orbital anal. (NBO) performed at the ωB97XD/6-311+G(d,p) level. NBO study showed that the hyper-conjugation and intermol. charge transfer play a remarkable role in stabilizing the crystals and also endorsed the SC-XRD investigations. Furthermore, the band gap of orbitals explained the chem. reactivity and charge transfer phenomena in the above-mentioned crystals. The smallest HOMO/LUMO band gap (4.127 eV) is exhibited by MABP mol. while the highest gap value is found for MBHP to be 4.768 eV.. Global reactivity parameters (GRP) are also explored from the energies of HOMO/LUMO. Among all crystals MBHP has higher value of hardness (η = 2.384 eV) while MABP showed higher global softness (σ = 0.242307 eV). So, from GRP it is revealed that all the studied crystals are less reactive but more stable as suggested by NBO and SC-XRD investigations. NLO study showed that the crystal MBMHP has the higher value of linear polarizability<α> and second hyperpolarizability <γ > 216.36 and 1.06 x 104a.u resp., among all the synthesized crystals. NLO properties of these synthesized crystals may play a significant contribution for the NLO technol. applications.

Journal of Molecular Structure published new progress about Band gap. 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Application of 2,3-Dimethoxybenzaldehyde.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Adigun, Rasheed A. published the artcileSubstitutional effects on the reactivity and thermal stability of dihydropyrimidinones, Application In Synthesis of 598-50-5, the main research area is dihydropyrimidinone substitutional effect reactivity thermal stability.

One of the advantages of dihydropyrimidinones (DHPMs) is the mol. diversity that could be achieved through their synthesis from a three-component reaction by varying the starting reaction materials. Differences in substituted functional groups could lead to varying reactivities and thermal stability amongst the analogs. In this study, two different classes of DHPMs were synthesized and the effects of the various substituents on the DHPM ring were investigated. The compounds were structurally characterized using single-crystal X-ray diffractometry, 1H, 13C, COSY, HSQC and HMBC NMR techniques, FT-IR and High Resolution Mass Spectrometry (HRMS). N1 methylation of the DHPM was found to increase the thermal stability of the series of DHPMs investigated, which is an added advantage in thermal reactions. The nature of the alkyl substituent of the ester group at position 5 of the DHPM was also found to affect the ease of the nucleophilic substitution reaction during the functionalization of the DHPMs. A complementary DFT study aided in understanding the above results as well as to compare the general stability of the range of compounds

Journal of Molecular Structure published new progress about Band gap. 598-50-5 belongs to class isoquinoline, name is 1-Methylurea, and the molecular formula is C2H6N2O, Application In Synthesis of 598-50-5.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Shuai, Danmeng published the artcileEnhancement of Oxyanion and Diatrizoate Reduction Kinetics Using Selected Azo Dyes on Pd-Based Catalysts, Recommanded Product: Diatrizoic Acid, the main research area is oxyanion diatrizoate reduction kinetic azo dye palladium catalyst wastewater.

Azo dyes are widespread pollutants and potential cocontaminants for nitrate; we evaluated their effect on catalytic reduction of a suite of oxyanions, diatrizoate, and N-nitrosodimethylamine (NDMA). The azo dye Methyl orange significantly enhanced (a factor of �.24) the catalytic reduction kinetics of nitrate, nitrite, bromate, perchlorate, chlorate, and diatrizoate with several different Pd-based catalysts; NDMA reduction was not enhanced. Nitrate was selected as a probe contaminant, and a variety of azo dyes (Methyl orange, Methyl red, Fast Yellow Ab, Metanil Yellow, Acid Orange 7, Congo Red, Eriochrome Black T, Acid Red 27, Acid Yellow 11, and Acid Yellow 17) were evaluated for their ability to enhance reduction Hydrogenation energies of azo dyes were calculated using d. functional theory and a volcano relation between hydrogenation energies and reduction rate enhancement was observed A kinetic model based on Bronsted-Evans-Polanyi (BEP) theory matched the volcano relation and suggests sorbed azo dyes enhance reduction kinetics through H atom shuttling between reduced azo dyes (i.e., hydrazo dyes) and oxyanions or diatrizoate. This is the 1st research that has identified this synergetic effect, and it has implications for designing more efficient catalysts and reducing Pd costs in water treatment systems.

Environmental Science & Technology published new progress about Azo dyes. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Recommanded Product: Diatrizoic Acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Li, Cheng-Hung published the artcileFluorescence-Guided Probes of Aptamer-Targeted Gold Nanoparticles with Computed Tomography Imaging Accesses for in Vivo Tumor Resection, Recommanded Product: Diatrizoic Acid, the main research area is tumor resection aptamer gold nanoparticles computed tomog imaging.

Recent development of mol. imaging probes for fluorescence-guided surgery has shown great progresses for determining tumor margin to execute the tissue resection. Here we synthesize the fluorescent gold nanoparticles conjugated with diatrizoic acid and nucleolin-targeted AS1411 aptamer. The nanoparticle conjugates exhibit high water-solubility, good biocompatibility, visible fluorescence and strong X-ray attenuation for computed tomog. (CT) contrast enhancement. The fluorescent nanoparticle conjugates are applied as a mol. contrast agent to reveal the tumor location in CL1-5 tumor-bearing mice by CT imaging. Furthermore, the orange-red fluorescence emitting from the conjugates in the CL1-5 tumor can be easily visualized by the naked eyes. After the resection, the IVIS measurements show that the fluorescence signal of the nanoparticle conjugates in the tumor is greatly enhanced in comparison to that in the controlled experiment Our work has shown potential application of functionalized nanoparticles as a dual-function imaging agent in clin. fluorescence-guided surgery.

Scientific Reports published new progress about Aptamers. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Recommanded Product: Diatrizoic Acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Howard, Philip H. published the artcileIdentifying New Persistent and Bioaccumulative Organics Among Chemicals in Commerce II: Pharmaceuticals, Formula: C11H9I3N2O4, the main research area is identifying persistent bioaccumulative organic chem commerce pharmaceutical.

The goal was to identify com. pharmaceuticals that might be persistent and bioaccumulative (P&B) and that were not being considered in current wastewater and aquatic environmental measurement programs. We developed a database of 3193 pharmaceuticals from 2 US Food and Drug Administration (FDA) databases and some lists of top ranked or selling drugs. Of the 3193 pharmaceuticals, 275 pharmaceuticals have been found in the environment and 399 pharmaceuticals were, based on production volumes, designated as high production volume (HPV) pharmaceuticals. All pharmaceuticals that had reported chem. structures were evaluated for potential bioaccumulation (B) or persistence (P) using quant. structure property relationships (QSPR) or scientific judgment. Of the 275 drugs detected in the environment, 92 were rated as potentially bioaccumulative, 121 were rated as potentially persistent, and 99 were HPV pharmaceuticals. After removing the 275 pharmaceuticals previously detected in the environment, 58 HPV compounds were identified that were both P&B and 48 were identified as P only. Of the non-HPV compounds, 364 pharmaceuticals were identified that were P&B. This study has yielded some interesting and probable P&B pharmaceuticals that should be considered for further study.

Environmental Science & Technology published new progress about Antacids. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Formula: C11H9I3N2O4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Yepes, Andres F. published the artcileDiscovery of novel donepezil-M30D hybrids with neuroprotective properties for Alzheimers disease treatment, Category: isoquinoline, the main research area is Alzheimers disease mol hybrid neuroprotective pharmacokinetics.

Herein, we designed and synthesized a novel family of mol. hybrids based on the pharmacophoric combination strategy, joining key pharmacophoric features from donepezil and M30D with neuroprotector effects, aiming at obtaining promising medicinal scaffolds for AD treatment. The neuroprotective profile of novel donepezil-M30D hybrids was evaluated by combining the glutamate excitotoxicity assay in neural cells, cytosolic calcium imaging, and through neuron/astrocyte coculture after glutamate exposure. Our results revealed that novel hybrids 6b, 6d, 6g and 6h highlighted for their neuroprotector potency against glutamate-induced excitotoxicity. Specifically, 6d treatment protected cortical neurons treated with an excitotoxic glutamate stimuli recovering calcium dynamics. Likewise, treatment with the 6d hybrid prevented neuronal death and astroglia reactivity in a coculture model of glutamate excitotoxity. Computational simulations and exptl. anal. would suggest that the neuroprotective effects of active compounds could be related to blockade of NMDA channel pore. Optimal pharmacokinetics properties were founded for the most active hybrids involving a remarkable in vitro human plasma stability, as well as suitable in silico ADME profile. In summary, hybridization of key pharmacophoric features from M30D and donepezil provide biol. active compounds that could be used as promising scaffolds for the design of future plasma-stable neuroprotective agents to fight Alzheimers disease (AD).

Medicinal Chemistry Research published new progress about Affinity. 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Category: isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem