Energy transfer and excitation processes in thin films of rare-earth organic complexes for NIR emission

被引：15

作者：

Pietrantoni, S. ^{[1
]}

Francini, R. ^{[1
]}

Pizzoferrato, R. ^{[2
]}

Penna, S. ^{[2
]}

Paolesse, R. ^{[3
]}

Mandoj, F. ^{[3
]}

机构：

[1] Univ Roma Tor Vergata, Dipartimento Fis, Via Ricerca Sci 1, I-00133 Rome, Italy

[2] Univ Roma Tor Vergata, Dipartimento Ingn Mec, Fac Ingn, I-00133 Rome, Italy

[3] Univ Roma Tor Vergata, Dipartimento Sci, Chim Tech, I-00133 Rome, Italy

来源：

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 4, NO 3 | 2007年 / 4卷 / 03期

关键词：

D O I：

10.1002/pssc.200673853

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have synthesized and studied the excitation-emission properties of three erbium-coordinating porphyrin-based complexes for solid state films with emission in the 1530-nm band. In two of these complexes the C-H groups of the organic part (ligand) have been substituted with C-F and/or C-Br ones in order to assess the role of the deactivation by the vibronic levels in the strong quenching of NIR emission. Time-resolved phosphorescence measurements have also been carried out in gadolinium analogues to verify the influence of substitution on the singlet-triplet intersystem crossing processes. The observed increase in the NIR emission is not consistent with the complete removal of quenching and the presence of other mechanisms for deactivation should be investigated.

引用

页码：1048 / +

页数：2

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