نتایج جستجو برای: vis spectrometry

تعداد نتایج: 119813  

2016
Mrinmay Mandal Kerstin Oppelt Manuela List Ian Teasdale Debashis Chakraborty Uwe Monkowius

ABSTRACT Four new copper complexes based on bidentate imino phenoxide ligands were synthesized and characterized by IR, UV-Vis spectroscopy, ESI mass spectrometry, single crystal X-ray diffraction, and electrochemistry. The crystal structures revealed that the copper(II) atoms are surrounded by phenolate oxygen and imine nitrogen atoms of two ligands in a distorted square-planar geometry. The e...

2012
Francisco J. Ortega María-José Bañuls Francisco J. Sanza Rafael Casquel María Fe Laguna Miguel Holgado David López-Romero Carlos A. Barrios Ángel Maquieira Rosa Puchades

In this paper, label-free biosensing for antibody screening by periodic lattices of high-aspect ratio SU-8 nano-pillars (BICELLs) is presented. As a demonstration, the determination of anti-gestrinone antibodies from whole rabbit serum is carried out, and for the first time, the dissociation constant (KD = 6 nM) of antigen-antibody recognition process is calculated using this sensing system. Af...

2013
Aravind Kumar Pawan Kumar Parmender Kumar Kapil Malik P. N. Dixit

The crystallization of hydrogenated amorphous silicon layers (a-Si:H) [1,2] deposited by plasma enhanced chemical vapor deposition (PECVD) is of great interest. Generally, laser or metals are used to induce crystallization in aSi:H films. We have found that films deposited at high rf power (> 0.2 W/cm2) by PECVD technique shows some crystallites embedded in a-Si:H matrix and their after its vac...

Journal: :Talanta 2005
C Bosch Ojeda F Sánchez Rojas

Anthropogenic emission of platinum group elements (PGEs) from the abrasion of automotive catalytic converters into the environment has significantly increased. Dust emitted from the catalyst is causing pollution problems of these metals in the future. However, the concentration level of these PGEs is still very low in the nature. The choice of which determination method to use depends on the le...

2012
Jelena Kiurski Ljubo Nedović Ivana Oros Jelena Krstić Lidija Čomić

The presence of formaldehyde in indoor air samples has been detected in five screen printing facilities of Novi Sad, Serbia. Air was sampled five times during one working week for each screen printing facility. The sampling was conducted continuously during 4 hours. The concentrations of formaldehyde were determined by UV-VIS spectrometry at 580 nm. The average concentrations of formaldehyde we...

2012
Yahia Nasser Mabkhot Assem Barakat Abdullah Mohammad Al-Majid Abdullah Saleh Alamary Taleb T. Al-Nahary

This paper reports details about the synthesis of a series of novel functionalized symmetrical bis-heterocyclic compounds containing a thieno[2,3-b]thiophene motif. Bis-thiazole derivatives 2, 3a-c and thiazolo[3,2-a]pyridine derivatives 4a-c are achieved. The hitherto unknown dihydrothiophene derivatives 6a-dvia bis-pyridimium salt 5 are obtained. Additionally, the novel hydrazonothieno[2,3-b]...

Journal: :The journal of physical chemistry. B 2005
Anil K Sadana Feng Liang Bruce Brinson Sivaram Arepalli Samir Farhat Robert H Hauge Richard E Smalley W E Billups

Large fullerenes and carbon-coated metal nanoparticles that are formed during the synthesis of carbon nanotubes have been functionalized by the addition of alkyl radicals and isolated by extraction into chloroform. The soluble, functionalized fullerenes have been isolated from raw single-wall carbon nanotube (SWNT) material prepared by laser oven, direct current arc, and high-pressure carbon mo...

2014
J. Sreeramulu

The synthesis and investigation of new Hetero Cyclic Dithicarbamate ligand and its solid metal complexes derived from 4-Amino-1,2,4triazole(ATAZ) and 2-Amino 4-Hydroxy-6-methyl pyrimidine (AHPY) by using different synthetic methods. The derived colored complexes are Au (III) and Ru (III) with above mentioned ligands. The structures and bio cancer activity were elucidated by different type of st...

Journal: :Molecules 2015
Anamaria D P Alexiou Carla C Decandio Sabrina da N Almeida Marcelo J P Ferreira Paulete Romoff Reginaldo C Rocha

A new trinuclear oxo-centered chromium(III) complex with formula [Cr3O(CH3CO2)6(L)(H2O)2] (L = 5-hydroxyflavone, known as primuletin) was synthetized and characterized by ESI mass spectrometry, thermogravimetry, and 1H-NMR, UV-Vis, and FTIR spectroscopies. In agreement with the experimental results, DFT calculations indicated that the flavonoid ligand is coordinated to one of the three Cr(III) ...

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