Linked Life Data

19845382

Source:http://linkedlifedata.com/resource/pubmed/id/19845382

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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
44
pubmed:dateCreated
2009-11-5
pubmed:abstractText
We describe the inorganic polymer K(4)P(8)Te(4) which is soluble, giving solutions that exhibit white emission upon 355 nm laser irradiation. An indirect band gap semiconductor (E(g) approximately 1.4 eV), K(4)P(8)Te(4) crystallizes in the space group P2(1)/m, with a = 6.946(1) A, b = 6.555(1) A, c = 9.955(2) A, and beta = 90.420(3) degrees at 173(2) K. The compound features infinite chains of [P(8)Te(4)(4-)] with covalent P-Te bonding and exhibits reversible crystal-glass phase-change behavior. When deposited from solution, the material forms highly crystalline K(4)P(8)Te(4) nanospheres. The thermal analysis, FT-IR, UV-vis diffuse reflectance, (31)P magic angle spinning solid-state NMR spectroscopy, and pair distribution function (PDF) analysis for the crystal and glass forms and ab initio electronic structure calculations by the screened-exchange local density function approximation are also reported. Speciation of K(4)P(8)Te(4) in solution studied with (31)P solution-state NMR spectroscopy, electrospray ionization mass spectrometry, and PDF analysis indicate exfoliation of [P(8)Te(4)(4-)] chains followed by rearrangement into molecular species.
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Nov
pubmed:issn
1520-5126
pubmed:author
pubmed:issnType
Electronic
pubmed:day
11
pubmed:volume
131
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
16303-12
pubmed:year
2009
pubmed:articleTitle
The tellurophosphate K(4)P(8)Te(4): phase-change properties, exfoliation, photoluminescence in solution and nanospheres.
pubmed:affiliation
Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA.
pubmed:publicationType
Journal Article