Fluoride-sulfophosphate glasses as hosts for broadband optical amplification through transition metal activators† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c7tc01853c
نویسندگان
چکیده
Unusually stable multi-anion glasses of the fluoride-sulfophosphate type (FPS) are introduced as a new host material for optically active cation species. Despite a notoriously low polymerization grade, anion mixing in this glass system enables facile manufacture of bulk or fiber devices which combine several advantages of fluoride and phosphate glasses while using the stabilizing effect of sulfate additions. Using the example of chromium doping, we demonstrate broad red photoluminescence at 734 nm and inhomogeneous broadening of the R-line at 694 nm, originating from the 4T2 → 4A2 and 2E → 4A2 transitions of Cr3+, respectively. The luminescence mechanism is further analyzed on the basis of the corresponding Tanabe-Sugano diagram. Tailored through chemical composition, internally nucleated precipitation of a nanocrystalline fluoride phase enables switching between high-field and low-field configurations of the Cr3+ ion, resulting in the specific emission properties and setting the path towards FPS-based optical devices.
منابع مشابه
The Lewis superacid Al[N(C6F5)2]3 and its higher homolog Ga[N(C6F5)2]3 – structural features, theoretical investigation and reactions of a metal amide with higher fluoride ion affinity than SbF5† †Electronic supplementary information (ESI) available. CCDC 1557072–1557076. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c7sc03988c
متن کامل
Transition-metal-free controlled polymerization for poly(p-aryleneethynylene)s† †Electronic supplementary information (ESI) available: Experimental details and characterizations of new compounds and polymers. See DOI: 10.1039/c4sc02872d Click here for additional data file.
A transition-metal-free controlled polymerization for the attainment of poly(p-aryleneethynylene)s is developed. The polymerization of 1-pentafluorophenyl-4-[(trimethylsilyl)ethynyl]benzene with a catalytic amount of fluoride anions proceeds in a chain-growth-like manner to afford polymers with controlled molecular weights and low polydispersity indexes. The mechanism involves a pentacoordinate...
متن کاملSelective transition-metal-free vicinal cis-dihydroxylation of saturated hydrocarbons† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c6sc03055f Click here for additional data file.
متن کامل
Enhancing the stability and porosity of penetrated metal–organic frameworks through the insertion of coordination sites† †Electronic supplementary information (ESI) available: Experimental section, crystallographic tables, IR, TG and characterization details. CCDC 1576271 and 1576272. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c7sc04192f
State Key Laboratory of Elemento-Orga Collaborative Innovation Center of Chem Nankai University, Tianjin 300071, China. 22-23502458 School of Materials Science and Engine Materials, Tianjin Key Laboratory of Metal Nankai University, Tianjin 300350, China † Electronic supplementary information crystallographic tables, IR, TG and chara 1576272. For ESI and crystallographic dat DOI: 10.1039/c7sc04...
متن کاملPhotoinduced single-crystal-to-single-crystal phase transition and photosalient effect of a gold(i) isocyanide complex with shortening of intermolecular aurophilic bonds† †Electronic supplementary information (ESI) available: X-ray crystallographic data, optical properties, DFT calculations, and other additional information. CCDC [987280 and 987281]. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c4sc02676d Click here for additional data file. Click here for additional data file. Click here for additional data file. Click here for additional data file. Click here for additional data file.
متن کامل
ذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره 5 شماره
صفحات -
تاریخ انتشار 2017