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Author Zhang, Ren-Chun ♦ Zhang, You-Juan ♦ Yuan, Bai-Qing ♦ Miao, Jun-Peng ♦ Pei, Bao-Hua ♦ Liu, Pan-Pan ♦ Wang, Jun-Jie ♦ Zhang, Dao-Jun
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ♦ CALORIMETRY ♦ EXCITATION ♦ FLUORESCENCE ♦ FLUORESCENCE SPECTROSCOPY ♦ HYBRIDIZATION ♦ MONOCRYSTALS ♦ PHOTOLUMINESCENCE ♦ POWDERS ♦ SILVER ♦ SILVER IODIDES ♦ SPACE GROUPS ♦ SYNTHESIS ♦ THERMAL GRAVIMETRIC ANALYSIS ♦ X-RAY DIFFRACTION
Abstract A new three-dimensional framework iodide, (DabcoH){sub 2}[(Dabco){sub 2}Ag{sub 14}I{sub 16}] (1), was solvothermal synthesized by transformation of dense AgI using p-methylthiophenol as mineralizer, and characterized by elemental analysis, single-crystal and powder X-ray diffraction, thermogravimetric analysis, differential scanning calorimetry analysis, UV–vis diffuse reflectance spectroscopy and fluorescence spectroscopy. Compound 1 crystallizes in the trigonal space group R-3c, a=13.4452(2) Å, c=63.725(2) Å, V=9976.5(4) Å{sup 3}, Z=6. It features a 3D silver-rich [(Dabco){sub 2}Ag{sub 14}I{sub 16}]{sup 2−} anionic framework built up from corner-sharing of hybrid [(Dabco){sub 2}Ag{sub 14}I{sub 19}]{sup 5−} clusters, with protonated DabcoH{sup +} as counterions residing in the channels. UV–vis reflectance spectroscopy reveals the band gap of 1 is 3.3 eV. Compound 1 exhibits a strong photoluminescent emission band at 567 nm upon excitation at 489 nm. - Graphical abstract: A new 3-D iodoargentate was synthesized by transformation of dense AgI in I{sup −}-deficient system using thiophenol as mineralizer. - Highlights: • We have developed a new method to synthesize iodide using thiophenol as mineralizer. • A new 3D iodide, (DabcoH){sub 2}[(Dabco){sub 2}Ag{sub 14}I{sub 16}], was synthesized by transformation of dense AgI under solvothermal condition. • The compound features a 3D Ag–I framework with highest Ag/I ratio. • Compound 1 is a semiconductor with the band gap of 3.3 eV. • Compound 1 exhibits a strong photoluminescent emission band at 567 nm upon excitation at 489 nm.
ISSN 00224596
Educational Use Research
Learning Resource Type Article
Publisher Date 2014-12-15
Publisher Place United States
Journal Journal of Solid State Chemistry
Volume Number 220


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