Highly Resolved Luminescence Measurements for Traces of 1,3-Dibetanato Europium(III) and Terbium(III) Complexes Using a Microscope Laser Raman Spectrometer toward the Forensic Discrimination

Kurata, Shoji; Nagai, Masatoshi

doi:10.2116/analsci.19.451

Cited by 8 publications

(9 citation statements)

References 16 publications

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“…Fig. 2 displays Eu 3+ luminescence spectrum of sol-gel samples prepared using EuCl 3 . The bands at 577, 592, 619, 651, and 691 nm correspond to the 5 D 0 -7 F J transition of Eu 3+ , with J ¼ 0, 1, 2, 3, and 4, respectively [36,37].…”

Section: Resultsmentioning

confidence: 99%

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Luminescence properties of europium (III) cryptates trapped in sol–gel glass

Zaitoun

Kim

Jaradat

et al. 2008

Journal of Luminescence

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Section: Resultsmentioning

confidence: 99%

“…These compounds can also be utilized as luminescent markers for shadowing the pursuit of suspects in the field of forensic science. The markers have to be various types of chemically identifiable ones in order to be used as crime evidence in many cases [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Luminescence properties of europium (III) cryptates trapped in sol–gel glass

Zaitoun

Kim

Jaradat

et al. 2008

Journal of Luminescence

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“…In the case of NHEt 3 Eu(dbm) 4 , one can identify four bands in the excitation spectrum shown in Figure 4 at 360, 402, 465 and 535 nm corresponding to f-orbital transmissions of the europium(III) core. [19] In the case of ZnS:Mn, there are six transitions in the excitation spectrum: 349, 392, 429, 465, 498 and 535 nm. [20] Recrystallization of NHEt 3 Eu(dbm) 4 opens the possibility to control the size of the crystals.…”

Section: Triboluminescent Materialsmentioning

confidence: 99%

Functional Diblock Copolymers for the Integration of Triboluminescent Materials into Polymer Matrices

Meuer

Zentel

2008

Macro Chemistry & Physics

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This work describes the synthesis and use of new diblock copolymers to integrate functional inorganic particles into a polymer matrix. These diblock copolymers were synthesized by nitroxide‐mediated polymerization (NMP) from styrene and two styrene‐like monomers with protected functional groups for the later connection to the functional inorganic material. It was possible to keep the polydispersity of the block copolymers around or below 1.2 and to preset the length of the functional block to about 20 monomers or 10 mol‐% of monomers. The groups for the surface functionalization (amino groups or chelating ligands) were obtained in their free form by polymer analogous reactions. As an example of functional inorganic materials, two highly triboluminescent materials were synthesized and investigated: an europium complex that is sensitive to fracture only and a manganese‐doped zinc sulfide that is also sensitive to reversible deformations. The interaction of the functional block copolymers with these triboluminescent crystals could be proved by (i) selective adsorption on surfaces coated with the block copolymer, (ii) by copolymer‐mediated transfer of the crystals from water to a chloroform phase and (iii) by the homogenous embedding of the crystals in a polystyrene (PS) matrix.

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“…Although the photoluminescence intensities of NdBFA3 and YbBFA3 were much weaker (approximately 1/500 -1/1200) than those of EuBFA3 and TbSE3, their photoluminescence peaks were detected at approximately 875 (the 4 F3/2 → 4 I9/2 transition of Nd 3+ ) and 975 nm (the 2 F5/2 → 2 F7/2 transition of Yb 3+ ), respectively. [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] The photoluminescence intensities of NdBFA3 and YbBFA3 were especially weak, because the UV light at 365 nm was not the optimum excitation light for the near-IR photoluminescence. However, the wavelength of the UV light lamp was used most popularly as an excitation light is 365 nm.…”

Section: More Unique Photoluminescent Powder Micromarkersmentioning

confidence: 99%

“…Eu 3+ and Tb 3+ complexes have been prepared by many researchers in various fields, and characteristically emit red and green luminescence under UV light at approximately 365 nm, respectively. [3][4][5][6][7][8][9][10][11][12][13][14][15] The retina of the human eye has three types of receptors: one for red, one for green, and one for blue light, and receives a mixture of two colors to form another color of light. For example, it forms yellow from red and green, magenta from red and blue, and cyan from green and blue.…”

Section: Introductionmentioning

confidence: 99%

Development of Micromarkers with Various Photoluminescence Colors as Tracers for Shadowing Pursuits

2008

Self Cite

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Micromarkers with five photoluminescence colors were developed as tracers for shadowing pursuits. The markers are colorless powders with particle diameters of several tens to several hundreds of micrometers, prepared using a cryogenic sample crusher. They were visualized using red, green, yellow, magenta or cyan photoluminescence under ultraviolet light at approximately 365 nm. The markers were composed of photoluminescent compounds dispersed in polyvinyl butyral. The photoluminescent compounds in the polyvinyl butyral were stable under ambient conditions for more than one year after application. The compounds with the red, green, yellow, magenta and cyan photoluminescence contained a europium (Eu 3+ ) complex, a terbium (Tb 3+ ) complex, a mixture of Tb 3+ and Eu 3+ complexes, a mixture of Eu 3+ complex and o-coumaric acid, and a mixture of Tb 3+ complex and 7-hydroxycoumarin along with a few drops of a sodium bicarbonate aqueous solution, respectively. Neodymium (Nd 3+ ) and ytterbium (Yb 3+ ) complexes with photoluminescence in the near-IR wavelength region can also be added to these visible photoluminescent compounds as secret markers for discrimination. The markers were non-destructively identified using a microscopic FT-IR spectrometer and a microscopic spectrometer equipped with a fluorescence detector.

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Highly Resolved Luminescence Measurements for Traces of 1,3-Dibetanato Europium(III) and Terbium(III) Complexes Using a Microscope Laser Raman Spectrometer toward the Forensic Discrimination

Cited by 8 publications

References 16 publications

Luminescence properties of europium (III) cryptates trapped in sol–gel glass

Luminescence properties of europium (III) cryptates trapped in sol–gel glass

Functional Diblock Copolymers for the Integration of Triboluminescent Materials into Polymer Matrices

Development of Micromarkers with Various Photoluminescence Colors as Tracers for Shadowing Pursuits

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