Deactivation and luminescence lifetimes of excited uranyl ion and its fluoro complexes

Zsolt Fazekas; Tomoo Yamamura; Hiroshi Tomiyasu

doi:10.1016/S0925-8388(98)00201-1

Deactivation and luminescence lifetimes of excited uranyl ion and its fluoro complexes

Zsolt Fazekas, Tomoo Yamamura, Hiroshi Tomiyasu

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

15 Citations (Scopus)

Abstract

The luminescence decay of uranyl fluoride complexes has been studied in broad fluoride concentration range. Biexponential decay were found with a shorter lifetime component varying between 1.7 and 19.1 μs, while a longer component is in the range from 49 to 156 μs. The fluoride saturated solution exhibits single exponential decay with a lifetime of 207 μs. The activation parameters for the decay of [UO₂F]⁺ complex have been determined. The results have been compared to other studies and interpreted in terms of ligand exchange, which is proposed as a new deactivation pathway for excited uranyl fluoro complexes.

Original language	English
Pages (from-to)	756-759
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	271-273
DOIs	https://doi.org/10.1016/S0925-8388(98)00201-1
Publication status	Published - 1998 Jun 12
Externally published	Yes

Keywords

Deactivation
Lifetime
Luminescence
Uranyl
Uranyl fluoro complexes

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/S0925-8388(98)00201-1

Cite this

@article{965fdf7b13474528811a7962ba0ebf35,

title = "Deactivation and luminescence lifetimes of excited uranyl ion and its fluoro complexes",

abstract = "The luminescence decay of uranyl fluoride complexes has been studied in broad fluoride concentration range. Biexponential decay were found with a shorter lifetime component varying between 1.7 and 19.1 μs, while a longer component is in the range from 49 to 156 μs. The fluoride saturated solution exhibits single exponential decay with a lifetime of 207 μs. The activation parameters for the decay of [UO2F]+ complex have been determined. The results have been compared to other studies and interpreted in terms of ligand exchange, which is proposed as a new deactivation pathway for excited uranyl fluoro complexes.",

keywords = "Deactivation, Lifetime, Luminescence, Uranyl, Uranyl fluoro complexes",

author = "Zsolt Fazekas and Tomoo Yamamura and Hiroshi Tomiyasu",

note = "Funding Information: This paper has been partly supported by a Grant-in-Aid for Scientific Research No. 08409004 from the Ministry of Education, Science and Culture of Japan.",

year = "1998",

month = jun,

day = "12",

doi = "10.1016/S0925-8388(98)00201-1",

language = "English",

volume = "271-273",

pages = "756--759",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Deactivation and luminescence lifetimes of excited uranyl ion and its fluoro complexes

AU - Fazekas, Zsolt

AU - Yamamura, Tomoo

AU - Tomiyasu, Hiroshi

N1 - Funding Information: This paper has been partly supported by a Grant-in-Aid for Scientific Research No. 08409004 from the Ministry of Education, Science and Culture of Japan.

PY - 1998/6/12

Y1 - 1998/6/12

N2 - The luminescence decay of uranyl fluoride complexes has been studied in broad fluoride concentration range. Biexponential decay were found with a shorter lifetime component varying between 1.7 and 19.1 μs, while a longer component is in the range from 49 to 156 μs. The fluoride saturated solution exhibits single exponential decay with a lifetime of 207 μs. The activation parameters for the decay of [UO2F]+ complex have been determined. The results have been compared to other studies and interpreted in terms of ligand exchange, which is proposed as a new deactivation pathway for excited uranyl fluoro complexes.

AB - The luminescence decay of uranyl fluoride complexes has been studied in broad fluoride concentration range. Biexponential decay were found with a shorter lifetime component varying between 1.7 and 19.1 μs, while a longer component is in the range from 49 to 156 μs. The fluoride saturated solution exhibits single exponential decay with a lifetime of 207 μs. The activation parameters for the decay of [UO2F]+ complex have been determined. The results have been compared to other studies and interpreted in terms of ligand exchange, which is proposed as a new deactivation pathway for excited uranyl fluoro complexes.

KW - Deactivation

KW - Lifetime

KW - Luminescence

KW - Uranyl

KW - Uranyl fluoro complexes

UR - http://www.scopus.com/inward/record.url?scp=0032091580&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032091580&partnerID=8YFLogxK

U2 - 10.1016/S0925-8388(98)00201-1

DO - 10.1016/S0925-8388(98)00201-1

M3 - Article

AN - SCOPUS:0032091580

SN - 0925-8388

VL - 271-273

SP - 756

EP - 759

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Deactivation and luminescence lifetimes of excited uranyl ion and its fluoro complexes

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this