نتایج جستجو برای: 3 hydroxyquinoline

تعداد نتایج: 1812007  

Journal: :Chemical communications 2014
Santu Sarkar Raja Shunmugam

The detection of nerve agent simulants is achieved by the photoinduced electron transfer (PET) mechanism. A "turn-on" fluorescence response upon phosphorylation at 8-hydroxyquinoline of norbornene-based triazolyl functionalized 8-hydroxyquinoline () followed by intramolecular rearrangement provides very intense green emission. The detection limit of polymer () coated paper strips is 25 ppb with...

2016
Aleksandra Felczak Przemysław Bernat Sylwia Różalska Katarzyna Lisowska

Quinoline, which belongs to N-heterocyclic compounds, occurs naturally in the environment and is used in numerous industrial processes. The structures of various chemicals, such as dyes and medicines, are based on this compound. Due to that fact, quinoline and its derivatives are widely distributed in environment and can exert toxic effects on organisms from different trophic levels. The abilit...

Journal: :Chemical communications 2007
Jin-Song Hu Heng-Xing Ji An-Min Cao Zheng-Xi Huang Yang Zhang Li-Jun Wan An-Dong Xia Da-Peng Yu Xiang-Min Meng Shuit-Tong Lee

A facile self-assembly growth route assisted by surfactant has been developed to synthesize tris(8-hydroxyquinoline)aluminium (Alq(3)) nanorods with regular hexagonal shape and good crystallinity, which exhibit field-emission characteristics with a very low turn-on field of ca. 3.1 V microm(-1) and a high field-enhancement factor of ca. 1300.

Journal: :Dalton transactions 2013
Valentina Oliveri Maurizio Viale Giulia Caron Cinzia Aiello Rosaria Gangemi Graziella Vecchio

8-Hydroxyquinoline derivatives are metal-binding compounds that have recently attracted interest as therapeutic agents for cancer therapy. In this scenario, we designed and synthesized three new glucoconjugates, 5,7-dichloro-8-quinolinyl-β-D-glucopyranoside, 5-chloro-8-quinolinyl-β-D-glucopyranoside and 2-methyl-8-quinolinyl-β-D-glucopyranoside and investigated their biological properties in co...

2013
Mirna Daye Baghdad Ouddane Jalal Halwani Mariam Hamzeh

8-Hydroxyquinoline (8-HQ) was chosen as a powerful ligand for Hg solid phase extraction. Among several chelating resins based on 8-HQ, 5-phenylazo-8-hydroxyquinoline (5Ph8HQ) is used for mercury extraction in which the adsorption dynamics were fully studied. It has been shown that Hg(II) is totally absorbed by 5Ph8HQ within the first 30 minutes of contact time with t 1/2 5 minutes, following La...

Journal: :Analytical and bioanalytical chemistry 2002
Bei Wen Xiao-Quan Shan

A modified synthetic method has been developed for immobilization of 8-hydroxyquinoline on polyacrylonitrile fiber. The synthetic conditions, e.g. reagent concentration, reaction temperature and time, were optimized. The features of the newly-modified fiber are higher exchange capacity compared with most other materials containing immobilized 8-hydroxyquinoline, better mechanic characteristics,...

Journal: :Dalton transactions 2012
Elke Debroye Geert Dehaen Svetlana V Eliseeva Sophie Laurent Luce Vander Elst Robert N Muller Koen Binnemans Tatjana N Parac-Vogt

A ditopic DTPA monoamide derivative containing an 8-hydroxyquinoline moiety was synthesized and the corresponding gadolinium(III) complex ([Gd(H5)(H(2)O)](-)) was prepared. After adding aluminum(III), the 8-hydroxyquinoline part self-assembled into a heteropolymetallic triscomplex [(Gd5)(3)Al(H(2)O)(3)](3-). The magnetic and optical properties of this metallostar compound were investigated in o...

2013
Walaa A.E. Omar

Aluminium tris(4-morpholinyl-8-hydroxyquinoline) has been synthesized and characterized. The photoluminescence measurements showed that the new derivative is blue shifted and has relative photoluminescence quantum yield two times higher compared to the pristine Al tris(8-hydroxyquinoline). Deferential scanning colorimetric studies revealed that the newly synthesized Alq3 derivative in this work...

2011
Victor Rühle Alexander Lukyanov Falk May Manuel Schrader Thorsten Vehoff James Kirkpatrick Björn Baumeier Denis Andrienko

Charge carrier dynamics in an organic semiconductor can often be described in terms of charge hopping between localized states. The hopping rates depend on electronic coupling elements, reorganization energies, and driving forces, which vary as a function of position and orientation of the molecules. The exact evaluation of these contributions in a molecular assembly is computationally prohibit...

Journal: :Organic & biomolecular chemistry 2003
Keith Jones Xavier Roset Sharon Rossiter Philip Whitfield

The synthesis of the quinoline alkaloid atanine 6, by selective demethylation of the 2,4-dimethoxyquinoline 11 is presented. An alternative demethylation utilising a thiolate anion leads to the regioisomeric 4-hydroxyquinoline 13.

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