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Luminescence properties of the Cu4I62- cluster

Jalilian, Ehsan; Liao, Rong-Zhen; Himo, Fahmi; Brismar, Hjalmar; Laurell, Fredrik and Lidin, Sven LU (2011) In Crysteengcomm 13(14). p.4729-4734
Abstract
Two new solvates were prepared in the system Cu(I) I using a solvolysis reaction. The structures for both of them were solved by X-ray crystallography, showing that they constitute two modifications of the same compound with the net formula [Cu4I6](P(C6H5)(4))(2)center dot 2OC(CH3)(2). Both types of crystals show vivid fluorescence when exposed to UV light. The formation of the first modification (I) seems to be preferred by kinetics and on ageing in the mother liquor it converts to modification (II). The Cu positions in (I) are disordered while those in (II) are fully ordered. The luminescent properties of both crystals were characterized using a confocal microscope and an excitation wavelength of 405 nm, resulting in fluorescence spectra... (More)
Two new solvates were prepared in the system Cu(I) I using a solvolysis reaction. The structures for both of them were solved by X-ray crystallography, showing that they constitute two modifications of the same compound with the net formula [Cu4I6](P(C6H5)(4))(2)center dot 2OC(CH3)(2). Both types of crystals show vivid fluorescence when exposed to UV light. The formation of the first modification (I) seems to be preferred by kinetics and on ageing in the mother liquor it converts to modification (II). The Cu positions in (I) are disordered while those in (II) are fully ordered. The luminescent properties of both crystals were characterized using a confocal microscope and an excitation wavelength of 405 nm, resulting in fluorescence spectra with the intensities of 1.22 and 0.52 relative to the reference (fluorescein 10 mu M). Density functional theory calculations on the ordered Cu4I62- core of modification (II) show that the de-excitation from LUMO to HOMO is responsible for the luminescence. The calculated emission spectrum has a maximum at 531 nm in good agreement with the results from confocal microscopy. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Crysteengcomm
volume
13
issue
14
pages
4729 - 4734
publisher
Royal Society of Chemistry
external identifiers
  • wos:000292159200038
  • scopus:79959775146
ISSN
1466-8033
DOI
10.1039/c0ce00909a
language
English
LU publication?
yes
id
ddd167bb-271f-49ef-8e88-2e5061d58156 (old id 2049182)
date added to LUP
2011-07-26 13:23:00
date last changed
2017-04-09 03:59:43
@article{ddd167bb-271f-49ef-8e88-2e5061d58156,
  abstract     = {Two new solvates were prepared in the system Cu(I) I using a solvolysis reaction. The structures for both of them were solved by X-ray crystallography, showing that they constitute two modifications of the same compound with the net formula [Cu4I6](P(C6H5)(4))(2)center dot 2OC(CH3)(2). Both types of crystals show vivid fluorescence when exposed to UV light. The formation of the first modification (I) seems to be preferred by kinetics and on ageing in the mother liquor it converts to modification (II). The Cu positions in (I) are disordered while those in (II) are fully ordered. The luminescent properties of both crystals were characterized using a confocal microscope and an excitation wavelength of 405 nm, resulting in fluorescence spectra with the intensities of 1.22 and 0.52 relative to the reference (fluorescein 10 mu M). Density functional theory calculations on the ordered Cu4I62- core of modification (II) show that the de-excitation from LUMO to HOMO is responsible for the luminescence. The calculated emission spectrum has a maximum at 531 nm in good agreement with the results from confocal microscopy.},
  author       = {Jalilian, Ehsan and Liao, Rong-Zhen and Himo, Fahmi and Brismar, Hjalmar and Laurell, Fredrik and Lidin, Sven},
  issn         = {1466-8033},
  language     = {eng},
  number       = {14},
  pages        = {4729--4734},
  publisher    = {Royal Society of Chemistry},
  series       = {Crysteengcomm},
  title        = {Luminescence properties of the Cu4I62- cluster},
  url          = {http://dx.doi.org/10.1039/c0ce00909a},
  volume       = {13},
  year         = {2011},
}