New Sensitizer-Modified Calix[4]arenes Enabling Near-UV Excitation of Complexed Luminescent Lanthanide Ions
摘要:
The synthesis is described of a series of calix[4]arenes with three different sensitizer chromophores (''antenna'') attached to the lower rim via a short spacer. In the Eu3+ and Tb3+ complexes of these calixarenes, photoexcitation of the antenna can induce lanthanide emission via intramolecular energy transfer. Although the higher energy of the Tb3+ luminescent state makes it more difficult to sensitize than in the case of Eu3+, especially a triphenylene antenna is found to have strong sensitizing ability toward not only Eu3+ but also Tb3+, allowing excitation of the lanthanide with wavelengths extending to 350 nm.
New Sensitizer-Modified Calix[4]arenes Enabling Near-UV Excitation of Complexed Luminescent Lanthanide Ions
摘要:
The synthesis is described of a series of calix[4]arenes with three different sensitizer chromophores (''antenna'') attached to the lower rim via a short spacer. In the Eu3+ and Tb3+ complexes of these calixarenes, photoexcitation of the antenna can induce lanthanide emission via intramolecular energy transfer. Although the higher energy of the Tb3+ luminescent state makes it more difficult to sensitize than in the case of Eu3+, especially a triphenylene antenna is found to have strong sensitizing ability toward not only Eu3+ but also Tb3+, allowing excitation of the lanthanide with wavelengths extending to 350 nm.
[EN] HOLE INJECTOR POLYMERS<br/>[FR] POLYMERES INJECTEURS DE TROUS
申请人:THOMSON-CSF
公开号:WO1999065961A1
公开(公告)日:1999-12-23
(EN) The invention relates to a new type of material that can be used for visual presentation in electroluminescent displays. The invention consists of straight-chain polymers containing active groups in terms of hole injection in an electroluminescent material. The above-mentioned active groups can be of a monopyrazoline or monoamine type.(FR) L'invention concerne un nouveau type de matériaux susceptibles d'être utilisés en visualisation dans des écrans électroluminescents. Il s'agit de polymères à chaînes latérales comportant des groupements actifs en terme d'injection de trous dans un matériau électroluminescent. Ces groupements actifs peuvent être de type monopyrazoline ou de type monoamine.
New Sensitizer-Modified Calix[4]arenes Enabling Near-UV Excitation of Complexed Luminescent Lanthanide Ions
作者:Frank J. Steemers、Willem Verboom、David N. Reinhoudt、Erik B. van der Tol、Jan W. Verhoeven
DOI:10.1021/ja00142a004
日期:1995.9
The synthesis is described of a series of calix[4]arenes with three different sensitizer chromophores (''antenna'') attached to the lower rim via a short spacer. In the Eu3+ and Tb3+ complexes of these calixarenes, photoexcitation of the antenna can induce lanthanide emission via intramolecular energy transfer. Although the higher energy of the Tb3+ luminescent state makes it more difficult to sensitize than in the case of Eu3+, especially a triphenylene antenna is found to have strong sensitizing ability toward not only Eu3+ but also Tb3+, allowing excitation of the lanthanide with wavelengths extending to 350 nm.