Modified spontaneous emission of europium complex nanoclusters embedded in colloidal silica spheres

Dan Zhao; Weiping Qin; Jisen Zhang; Changfeng Wu; Guanshi Qin; Gejihu De; Jishuang Zhang; Shaozhe Lü

doi:10.1016/j.cplett.2004.12.113

Modified spontaneous emission of europium complex nanoclusters embedded in colloidal silica spheres

Dan Zhao
, Weiping Qin
, Jisen Zhang
, Changfeng Wu
, Guanshi Qin
, Gejihu De
, Jishuang Zhang
, Shaozhe Lü

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

Europium complex nanoclusters were encapsulated inside silica colloidal spheres by a wet-chemical method. The hybrid spheres were characterized to possess a core-shell structure by transmission electron microscopy. The spheres present strong characteristic emissions of Eu³⁺ ions, and the fluorescence decay time decreases when the spheres are dispersed in two dielectric polymers. Temperature-dependent decay dynamics indicates that europium complex in sphere-polymer systems display higher spontaneous emission rate compared with free hybrid spheres in air. Our results are suggestive for optimizing the luminescence quantum yield of lanthanide complexes, and also provide a promising probe to investigate modified spontaneous emission in photonic crystals.

Original language	English
Pages (from-to)	129-134
Number of pages	6
Journal	Chemical Physics Letters
Volume	403
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2004.12.113
State	Published - 14 Feb 2005
Externally published	Yes

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@article{71d4bddd97a24a77bd44c48ab96b3787,

title = "Modified spontaneous emission of europium complex nanoclusters embedded in colloidal silica spheres",

abstract = "Europium complex nanoclusters were encapsulated inside silica colloidal spheres by a wet-chemical method. The hybrid spheres were characterized to possess a core-shell structure by transmission electron microscopy. The spheres present strong characteristic emissions of Eu3+ ions, and the fluorescence decay time decreases when the spheres are dispersed in two dielectric polymers. Temperature-dependent decay dynamics indicates that europium complex in sphere-polymer systems display higher spontaneous emission rate compared with free hybrid spheres in air. Our results are suggestive for optimizing the luminescence quantum yield of lanthanide complexes, and also provide a promising probe to investigate modified spontaneous emission in photonic crystals.",

author = "Dan Zhao and Weiping Qin and Jisen Zhang and Changfeng Wu and Guanshi Qin and Gejihu De and Jishuang Zhang and Shaozhe L{\"u}",

note = "Funding Information: This work was supported by the National Natural Science Foundations of China (Grant Nos. 10274082 and 10474096).",

year = "2005",

month = feb,

day = "14",

doi = "10.1016/j.cplett.2004.12.113",

language = "English",

volume = "403",

pages = "129--134",

journal = "Chemical Physics Letters",

issn = "0009-2614",

publisher = "Elsevier B.V.",

number = "1-3",

}

TY - JOUR

T1 - Modified spontaneous emission of europium complex nanoclusters embedded in colloidal silica spheres

AU - Zhao, Dan

AU - Qin, Weiping

AU - Zhang, Jisen

AU - Wu, Changfeng

AU - Qin, Guanshi

AU - De, Gejihu

AU - Zhang, Jishuang

AU - Lü, Shaozhe

N1 - Funding Information: This work was supported by the National Natural Science Foundations of China (Grant Nos. 10274082 and 10474096).

PY - 2005/2/14

Y1 - 2005/2/14

N2 - Europium complex nanoclusters were encapsulated inside silica colloidal spheres by a wet-chemical method. The hybrid spheres were characterized to possess a core-shell structure by transmission electron microscopy. The spheres present strong characteristic emissions of Eu3+ ions, and the fluorescence decay time decreases when the spheres are dispersed in two dielectric polymers. Temperature-dependent decay dynamics indicates that europium complex in sphere-polymer systems display higher spontaneous emission rate compared with free hybrid spheres in air. Our results are suggestive for optimizing the luminescence quantum yield of lanthanide complexes, and also provide a promising probe to investigate modified spontaneous emission in photonic crystals.

AB - Europium complex nanoclusters were encapsulated inside silica colloidal spheres by a wet-chemical method. The hybrid spheres were characterized to possess a core-shell structure by transmission electron microscopy. The spheres present strong characteristic emissions of Eu3+ ions, and the fluorescence decay time decreases when the spheres are dispersed in two dielectric polymers. Temperature-dependent decay dynamics indicates that europium complex in sphere-polymer systems display higher spontaneous emission rate compared with free hybrid spheres in air. Our results are suggestive for optimizing the luminescence quantum yield of lanthanide complexes, and also provide a promising probe to investigate modified spontaneous emission in photonic crystals.

UR - https://www.scopus.com/pages/publications/12844251963

U2 - 10.1016/j.cplett.2004.12.113

DO - 10.1016/j.cplett.2004.12.113

M3 - Article

AN - SCOPUS:12844251963

SN - 0009-2614

VL - 403

SP - 129

EP - 134

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-3

ER -

Modified spontaneous emission of europium complex nanoclusters embedded in colloidal silica spheres

Abstract

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