New insights into UV laser irradiation effect on luminescent behavior of vitrified films based on mesogenic lanthanide(III) β-diketonate complexes

被引：0

作者：

Lapaev, Dmitry, V ^{[1
]}

Nikiforov, Victor G. ^{[1
]}

Lobkov, Vladimir S. ^{[1
]}

Knyazev, Andrey A. ^{[2
]}

Krupin, Aleksandr S. ^{[2
]}

Galyametdinov, Yuriy G. ^{[1
]}

机构：

[1] RAS, FRC Kazan Sci Ctr, Zavoisky Phys Tech Inst, Sibirsky Trakt 10-7, Kazan 420029, Russia

[2] Kazan Natl Res Technol Univ, Kazan 420015, Russia

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2019年 / 382卷

基金：

俄罗斯科学基金会;

关键词：

Lanthanide(III) beta-diketonate complexes; Photostability; Luminescent vitrified films; Intramolecular energy transfer; Eu3+ ions emission; INTRAMOLECULAR ENERGY-TRANSFER; RARE-EARTH COMPLEXES; PHOTOLUMINESCENCE PROPERTIES; OPTICAL-PROPERTIES; ACRYLIC-ACID; THIN-FILMS; EUROPIUM(III); EU3+; ENHANCEMENT; STATE;

D O I：

10.1016/j.photochem.2019.111962

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We revealed the effect of the prolonged UV laser irradiation on luminescent behavior of photonic materials based on mesogenic lanthanide(III) beta-diketonate complexes by using a novel 3 mu m vitrified film of an europium(III) beta-diketonate complex. We used the Eu3+ ions to monitor the UV laser-induced photophysical processes in the film. Despite the fact that usually prolonged UV irradiation leads to irreversible photofragmentation of ligands, we had observed no photodecomposition of the complexes after the irradiation of the film with the 337 nm laser for 5 h. The spectroscopic study revealed (i) a 16.5-fold luminescence intensity decrease due to laser-induced changes in inner coordination spheres of the Eu3+ ions and (ii) the main channel of non-radiative energy losses from the Eu3+ ions through the multiphonon relaxation. These features open up new possibilities for designing advanced photonics materials with excellent photostability and luminescent properties controlled during operation.

引用

页数：9

共 72 条

[1] Ligand-to-metal charge-transfer quenching of the Eu3+(5D1) state in europium-doped tris(2,2,6,6-tetramethyl-3,5-heptanedionato)gadolinium (III) [J].

An, YZ ;

Schramm, GE ;

Berry, MT .

JOURNAL OF LUMINESCENCE, 2002, 97 (01) :7-12

[2]

[Anonymous], 2009, LUMINESCENCE PHENOM

[3] Synthesis, X-ray structure, spectroscopic characterization, and theoretical prediction of the structure and electronic spectrum of Eu(btfa)3•bipy and an assessment of the effect of fluorine as a β-diketone substituent on the ligand-metal energy transfer process [J].

Batista, HJ ;

de Andrade, AVM ;

Longo, RL ;

Simas, AM ;

de Sa, GF ;

Ito, NK ;

Thompson, LC .

INORGANIC CHEMISTRY, 1998, 37 (14) :3542-3547

[4] Non-radiative deactivation of the excited states of europium, terbium and ytterbium complexes by proximate energy-matched OH, NH and CH oscillators: an improved luminescence method for establishing solution hydration states [J].

Beeby, A ;

Clarkson, IM ;

Dickins, RS ;

Faulkner, S ;

Parker, D ;

Royle, L ;

de Sousa, AS ;

Williams, JAG ;

Woods, M .

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2, 1999, (03) :493-503

[5] Temperature dependence of the Eu3+ D-5(0) lifetime in europium tris(2,2,6,6-tetramethyl-3,5-heptanedionato) [J].

Berry, MT ;

May, PS ;

Xu, H .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (22) :9216-9222

[6] Optical properties of vitrified rare-earth soaps [J].

Binnemans, K ;

Jongen, L ;

Görller-Walrand, C .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2001, 3 (21) :4796-4799

[7] Influence of the lanthanide contraction on the transition temperatures of rare-earth containing metallomesogens with Schiff base ligands [J].

Binnemans, K ;

Van Deun, R ;

Bruce, DW ;

Galyametdinov, YG .

CHEMICAL PHYSICS LETTERS, 1999, 300 (3-4) :509-514

[8]

Binnemans K, 2005, HBK PHYS CHEM RARE, V35, P107, DOI 10.1016/S0168-1273(05)35003-3

[9] Interpretation of europium(III) spectra [J].

Binnemans, Koen .

COORDINATION CHEMISTRY REVIEWS, 2015, 295 :1-45

[10] Lanthanide-Based Luminescent Hybrid Materials [J].

Binnemans, Koen .

CHEMICAL REVIEWS, 2009, 109 (09) :4283-4374

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