A comprehensive strategy to boost the quantum yield of luminescence of europium complexes.

A comprehensive strategy to boost the quantum yield of luminescence of europium complexes.
复制标题

DOI:
10.1038/srep02395
复制
发表时间:
2013
期刊:
影响因子:
4.6
通讯作者:
Simas, Alfredo M.
Simas, Alfredo M.
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Lima, Nathalia B. D.;Goncalves, Simone M. C.;Junior, Severino A.;Simas, Alfredo M.

文献摘要

参考文献

被引文献

相似文献

镧系元素发光在阴离子传感、蛋白质识别、纳米磷光器件、光电器件、免疫测定等方面具有许多重要应用。特别是发光铕配合物,通过吸收紫外(UV)光并发射红色可见光谱区域的光,充当光转换分子器件。发光的量子产率定义为发射的光子数与吸收的紫外光子数的比率。发光的量子产率越高,应用的灵敏度越高。在这里,我们提出了一个猜想,通过简单地增加与镧系离子配位的良好配体的多样性,可以设计具有更高量子产率值的铕配合物。事实上,对于所研究的案例,量子产率获得的百分比提升被证明是很强的:高达 81%,同时伴随着更快的辐射速率常数,因为发射变得越来越不受禁止。
Lanthanide luminescence has many important applications in anion sensing, protein recognition, nanosized phosphorescent devices, optoelectronic devices, immunoassays, etc. Luminescent europium complexes, in particular, act as light conversion molecular devices by absorbing ultraviolet (UV) light and by emitting light in the red visible spectral region. The quantum yield of luminescence is defined as the ratio of the number of photons emitted over the number of UV photons absorbed. The higher the quantum yield of luminescence, the higher the sensitivity of the application. Here we advance a conjecture that allows the design of europium complexes with higher values of quantum yields by simply increasing the diversity of good ligands coordinated to the lanthanide ion. Indeed, for the studied cases, the percent boost obtained on the quantum yield proved to be strong: of up to 81%, accompanied by faster radiative rate constants, since the emission becomes less forbidden.
DOI: 10.1039/b107770h
发表时间: 2002-01-01
影响因子: 3.3
作者:
Werts, MHV;Jukes, RTF;Verhoeven, JW
通讯作者: Verhoeven, JW
DOI: 10.4028/www.scientific.net/msf.315-317.204
发表时间: 1999-01-01
期刊: RARE EARTHS '98
影响因子: --
作者:
Donegá, CD;Alves, S;de Sá, GF
通讯作者: de Sá, GF
DOI: 10.1063/1.1723709
发表时间: 1942-04-01
影响因子: 4.4
作者:
Weissman, SI
通讯作者: Weissman, SI
DOI: 10.1021/ic1015324
发表时间: 2010-10-04
影响因子: 4.6
作者:
Raj, D. B. Ambili;Francis, Biju;Cowley, Alan H.
通讯作者: Cowley, Alan H.
DOI: 10.1016/s0925-8388(00)00642-3
发表时间: 2000-05-24
影响因子: 6.2
作者:
Silva, FRGE;Menezes, JFS;Malta, OL
通讯作者: Malta, OL