نتایج جستجو برای: solvatochromic parameters

تعداد نتایج: 578974  

Journal: :Chemical communications 2015
Xiao-Yong Jia Jin-Feng Mei Jian-Cheng Lai Cheng-Hui Li Xiao-Zeng You

Coordination bonds are effective for constructing functional self-healing materials due to their tunable bond strength and metal-ion-induced functionalities. In this work, we incorporate a cobalt(II) triazole complex into a polydimethylsiloxane (PDMS) matrix. The resulting polymers show solvatochromic behaviour as well as self-healing properties.

Journal: :Chemical communications 2014
Ryan F Landis Mahdieh Yazdani Brian Creran Xi Yu Vikas Nandwana Graeme Cooke Vincent M Rotello

Hydrogen bonding heavily influences conformations, rate of reactions, and chemical equilibria. The development of a method to monitor hydrogen bonding interactions independent of polarity is challenging as both are linked. We have developed two solvatochromic dyes that detect hydrogen-bond-donating solvents. The unique solvatochromism of the triazine architecture has allowed the development of ...

Journal: :Physical chemistry chemical physics : PCCP 2016
Galina V Loukova Alexey A Milov Vladimir P Vasiliev Vladimir I Minkin

For metal-based compounds, the ground- and excited-state dipole moments and the difference thereof are, for the first time, obtained both experimentally and theoretically using solvatochromic equations and DFT/B3LYP/QZVP calculations. The approach is suggested to be promising and easily accessible, and can be universal to elucidate the electronic properties of metal-based compounds.

Journal: :journal of physical & theoretical chemistry 2008
m. yari s. sedaghat m. hekmati

the synthesis and properties of new monoazo dyes derived from the diazonium salts of paminobenzoic acid, 3-trifluoromethyl aniline , 4-trifluoromethyl aniline are considered .theprepared compounds were characterized by uv-visible , ft-ir and h nmr spectroscopictechniques . the effect of varying solvent upon the absorption ability of p-amino benzoic acidcoupled with 4,4 —diethyl aniline , anilin...

Journal: :Journal of Taibah University for Science 2022

A series of five tetracyclic mono azo dyes based on the diazotization 1-amino-8-hydroxynaphthalene-3,6-disulphonic acid and subsequent coupling with substituted (un)sulphonated naphthalene derivatives have been synthesized. The chemical structures were established using UV–visible, IR, NMR as well mass spectrometry. Based number sulphonic other hydrophilic groups they contain, compounds showed ...

Journal: :The Analyst 2015
Jacqueline M Rankin Qifan Zhang Maria K LaGasse Yinan Zhang Jon R Askim Kenneth S Suslick

A cross-reactive colorimetric sensor array composed of solvatochromic dyes in semi-liquid matrices was used to successfully discriminate among eleven common solvents. The multidimensional array response is attributed to both chemical (i.e., analyte-dye interactions) and physical (i.e., spot blooming and refractive index alteration) changes in the sensor spot.

Journal: :Chemical communications 2013
Malay Pramanik Nabanita Chatterjee Subhadip Das Krishna Das Saha Asim Bhaumik

We report the first synthesis and use of a well defined fluorescent organic nanoparticle (FON), tetraethyl anthracene-9,10-diyl-9,10-bis(phosphonate) [TEABP], as a selective anticancer candidate by apoptosis mediated cancer therapy towards U937 cells together with its unique solvatochromic properties.

2013
S. H. Hüttenhain R. Feldmann

The solvatochromic fluorescence properties of 8-(phenylamino)-l-naphthalene-ammoniumsulfonate (1) were investigated in 22 pure solvents of rising polarity. The measurements of both Stokes’ shifts and intensities discriminated between protic and aprotic solvents. Fairly good linear correla­ tion plots of the dependence could be obtained on neglection of the values of tert.-butanol, D M F and DM SO.

پایان نامه :دانشگاه بین المللی امام خمینی (ره) - قزوین - دانشکده علوم پایه 1392

in this thesis,spin dependend transport and electron transport through of ng/sg(graphene/ superconductor graphen) are studied in the junction of ng/fgt/sg. due to andreev reflection conductance increases in the presence of superconductor graphene.also, by applying a voltage gate on a superconductor, fermi level shifts and the conductance is independent of ferromagnatic substrate. also, the cond...

Series of novel dichromophoric cyanine dyes based on 2-aminobenzothiazoles and 3-amino-1,2,4 -triazole have been synthesized in high yields. All the dyes have been classified as disperse dyes. Besides their electronic spectroscopic properties, high dye-uptakes on polyester, excellent fastness properties, highly extinction coefficients, and broad solvatochromic effects have been observed in thes...

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