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Studies on Crystal growth, Vibrational, Dielectric, electronic, Mechanical and Thermal properties of new organic nonlinear optical crystal: 3-Nitrocinnamic acid

17-09-2013 | D SAJAN; Alen S; Job Sabu; Udayalakshmi K; Veeraiah V; Chaitanya K, CrystEngComm, 2013

3-Nitrocinnamic acid (3NCA) is synthesized and the crystals have been grown in aqueous solution by slow evaporation solution growth technique. Grown crystal was confirmed by powder XRD studies. The geometry, intermolecular hydrogen bonding, and harmonic vibrational wavenumbers of 3NCA have been ...

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Calcium-selective optodes for the management of plant nutrient solutions

16-09-2013 | Author(s): Matthew T. Bamsey , Alain Berinstain , Michael A. Dixon, Sensors and Actuators B: Chemical, 2013

Publication date: January 2014 Source:Sensors and Actuators B: Chemical, Volume 190 Author(s): Matthew T. Bamsey , Alain Berinstain , Michael A. Dixon Robust, real-time, ion-selective sensors are much needed by the greenhouse and controlled environment plant production sectors. ...

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Chemical analysis, FTIR and Microhardness study to find out nonlinear optical property of L-asparagine lithium chloride: A semiorganic crystals

16-09-2013 | Author(s): S. Masilamani , A. Mohamed Musthafa, Microchemical Journal, 2013

Publication date: Available online 11 September 2013 Source:Microchemical Journal Author(s): S. Masilamani , A. Mohamed Musthafa In the recent times semiorganic nonlinear optical material is a forefront of current research because of its importance to providing key functions of frequency ...

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Mutual Interference between Intramolecular Proton Transfer Sites through the Adjoining π-Conjugated System in Schiff Bases of Double-Headed, Fused Salicylaldehydes

11-09-2013 | Hirohiko Houjou; Hajime Shingai; Keisuke Yagi; Isao Yoshikawa; Koji Araki, The Journal of Organic Chemistry, 2013

We synthesized two constitutionally isomeric bis(iminomethyl)-2,6-dihydroxynaphthalenes, namely, α,α-diimines 1 and β,β-diimines 2, which can be formally represented as fused salicylaldimines with resonance-assisted hydrogen-bonding sites. Spectroscopic data show that the OH/OH, NH/OH, and NH/NH ...

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Dissociation of Antimicrobial and Hemolytic Activities of Gramicidin S through N‐Methylation Modification

10-09-2013 | Yangmei Li, Nina Bionda, Austin Yongye, Phaedra Geer, Maciej Stawikowski, Predrag Cudic, Karina Martinez, Richard A. ..., ChemMedChem, 2013

Abstract β‐Sheet antimicrobial peptides (AMPs) are well recognized as promising candidates for the treatment of multidrug‐resistant bacterial infections. To dissociate antimicrobial activity and hemolytic effect of β‐sheet AMPs, we hypothesize that N‐methylation of the intramolecular hydrogen ...

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Zinc(II) and Cadmium(II) Monohydroxide Bridged, Dinuclear Metallacycles: A Unique Case of Concerted Double Berry Pseudorotation

09-09-2013 | Daniel L. Reger; Andrea E. Pascui; Perry J. Pellechia; Mark D. Smith, Inorganic Chemistry, 2013

The reactions of M(ClO4)2·6H2O [M = Zn(II), Cd(II)] and the ligands m-bis[bis(1-pyrazolyl)methyl]benzene, Lm, or m-bis[bis(3,5-dimethyl-1-pyrazolyl)methyl]benzene, Lm*, in the presence of a base yield the hydroxide bridged dinuclear metallacycles [M2(μ-OH)(μ-L)2](ClO4)3, L = Lm, M = Zn(II) (1); L ...

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Restacking-Inhibited 3D Reduced Graphene Oxide for High Performance Supercapacitor Electrodes

09-09-2013 | Ji Hoon Lee; Nokyoung Park; Byung Gon Kim; Dae Soo Jung; Kyuhyun Im; Jaehyun Hur; Jang Wook Choi, ACS Nano, 2013

Graphene has received considerable attention in both scientific and technological areas due to its extraordinary material properties originating from the atomically single- or small number-layered structure. Nevertheless, in most scalable solution-based syntheses, graphene suffers from severe ...

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Ion‐Pairing of Phosphonium Salts in Solution: CH⋅⋅⋅Halogen and CH⋅⋅⋅π Hydrogen Bonds

06-09-2013 | Johannes Ammer, Christoph Nolte, Konstantin Karaghiosoff, Sebastian Thallmair, Peter Mayer, Regina de Vivie‐Riedle, ..., Chemistry - A European Journal, 2013

Abstract The 1H NMR chemical shifts of the C(α)H protons of arylmethyl triphenylphosphonium ions in CD2Cl2 solution strongly depend on the counteranions X−. The values for the benzhydryl derivatives Ph2CHPPh3+ X−, for example, range from δH=8.25 (X−=Cl−) over 6.23 (X−=BF4−) to 5.72 ppm ...

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Wetted‐wall corona discharge induced degradation of sulfadiazine antibiotics in aqueous solution

04-09-2013 | Shaopeng Rong, Yabing Sun, Journal of Chemical Technology & Biotechnology, 2013

Abstract Background Sulfadiazine which is potent antibacterial agent belonging to sulfonamide class of antibiotics is widely used as veterinary and human medicine, has been detected in contaminated water and soils. A cylindrical wetted‐wall corona discharge was applied for the removal of ...

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Lanthanide(III) complexes of aminoethyl-DO3A as PARACEST contrast agents based on decoordination of weakly bound amino group

04-09-2013 | Jan Kotek; Tereza Krchová; Daniel Jirák; Jana Havlíčková; Ivana Cisarova; Petr Hermann, Dalton Transactions, 2013

2-Aminoethyl DOTA analogues with unsubstituted (H3L1), monomethylated (H3L2) and dimethylated (H3L3) amino group were prepared by improved synthetic procedures. Their solid-state structures exhibit extensive system of intramolecular hydrogen bonds which is probably present in solution as well ...

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