نتایج جستجو برای: lanthanide

تعداد نتایج: 4165  

Journal: :Nature chemistry 2012
Muralee Murugesu

Lanthanide compounds make for intriguing molecules that are also useful components in fluorescent, catalytically active and magnetic materials — some have even found their way into medicinal applications, for example as MRI contrasting agents owing to their magnetic properties1. Yet this has not always been the case. They had initially been overlooked, owing to their isostructurality and common...

Journal: :Chemical communications 2014
Serkan Alpugan Ümit İşci Florian Albrieux Catherine Hirel Ayşe Gül Gürek Yann Bretonnière Vefa Ahsen Fabienne Dumoulin

A one-step method to access to functionalized heteroleptic lanthanide double-decker complexes of phthalocyanine of A7B-type is reported. This optimized statistical method led to two hydroxylated model europium complexes, one of which was further converted into its mesylated and azido derivatives.

Journal: :Physical chemistry chemical physics : PCCP 2016
Yi-Jung Tu Matthew J Allen G Andrés Cisneros

The dynamics of ligand exchange on lanthanide ions is important for catalysis and organic reactions. Recent 17O-NMR experiments have shown that water-exchange rates of lanthanide ions in water/1-ethyl-3-methylimidazolium ethyl sulfate (water/[EMIm][EtSO4]) increase as a function of increasing charge density. The trend of water-exchange rates in this solvent is opposite to that observed in water...

Journal: :Inorganic chemistry 2010
Dongbin Dang Yan Bai Cheng He Jian Wang Chunying Duan Jingyang Niu

A polyoxometalate-based lanthanide-organic framework was achieved using the {[Ho(4)(dpdo)(8)(H(2)O)(16)BW(12)O(40)] (H(2)O)(2)}(7+) nanocage as a secondary building block for the heterogeneous catalysis of phosphodiester cleavage in an aqueous solution.

Journal: :Dalton transactions 2014
Shuang Song Xia Li Yi-Hua Zhang Rui Huo Dou Ma

The 2D isostructural lanthanide-organic frameworks [Ln(4-SBA)(IP)OH] · 1.5H2O (Ln = Sm 1, Eu, 2 Gd3 and Tb 4 ; 4-SBA = 4-sulfobenzoate and IP = 1H-imidazo[4,5-f][1,10]-phenanthroline) display different luminescent behavior. White light emission was realized by introducing single dopant Eu(III) and codopants Eu(III)/Gd(III) or Eu(III)/Tb(III) into the Sm(III) framework for the first time.

Journal: :Dalton transactions 2011
James A Tilney Thomas Just Sørensen Benjamin P Burton-Pye Stephen Faulkner

A binuclear lanthanide complex consisting of two lanthanide binding domains linked by a m-xylyl bridging unit forms very stable 1 : 1 adducts with benzene dicarboxylic acids and their derivatives. The complex with isophthalate derivatives is particularly stable.

2015
Jia Bai Zeting Zhang Maili Liu Conggang Li

BACKGROUND The pathological hallmark of Parkinson's disease is the deposition of cytoplasmic neuronal inclusions termed Lewy bodies. The major component of Lewy bodies is amyloid fibrils of α-synuclein. To investigate what causes α-synuclein aggregation is essential to understand its pathological roles in Parkinson's disease. Various metal ions, including iron and copper, have been implicated i...

Journal: :The journal of physical chemistry. A 2009
Ivan Infante Laura Gagliardi Xuefeng Wang Lester Andrews

The results of a combined spectroscopic and computational study of lanthanide hydrides with the general formula MH(x)(H(2))(y), where M = La, Ce, Pr, Nd, Sm, Eu, and Gd, x = 1-4, and y = 0-6 are reported. To understand the nature of the dihydrogen complexes formed with lanthanide metal hydride molecules, we have first identified the binary MH(x) species formed in the ablation/deposition process...

Journal: :Dalton transactions 2011
Daojun Zhang Duihai Tang Xuemin Wang Zhen-an Qiao Yantao Li Yunling Liu Qisheng Huo

We chose dipicolinic acid as a tridentate chelating unit featuring ONO donors to react with lanthanide(III) ions to yield tight and protective N(3)O(6) environments around the lanthanide(III) ions. We immobilized the lanthanide(III)-dipicolinic acid complexes on colloidal mesoporous silica with diameter smaller than 100 nm by a covalent bond grafting technique and obtained nearly monodisperse l...

Journal: :Dalton transactions 2011
Jingjing Liang Jiangfang Chen Jing Zhao Yingli Pan Yong Zhang Dingxian Jia

Two systems, Ln/Sn/Se/en and Ln/Sn/Se/dien, were investigated under solvothermal conditions, and novel lanthanide selenidostannates [{Ce(en)(4)}(2)(μ-Se(2))]Sn(2)Se(6) (1a), [{Ln(en)(3)}(2)(μ-OH)(2)]Sn(2)Se(6) (Ln = Pr(1b), Nd(1c), Gd(1d); en = ethylenediamine), [{Ln(dien)(2)}(4)(μ(4)-Sn(2)Se(9))(μ-Sn(2)Se(6))](∞) (Ln = Ce(2a), Nd(2b)), and [Hdien][Gd(dien)(2)(μ-SnSe(4))] (2c) (dien = diethylen...

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