کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6600458 | 458933 | 2014 | 33 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structure and colour of diphosphate pigments with square pyramid environment around chromophore ions (Co2+, Ni2+, Cu2+)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
A series of diphosphate compounds of SrZn1âxMxP2O7 composition (MÂ =Â Co, Ni, Cu) has been prepared by a conventional ceramic route. In this low cost and easily prepared series, the zinc site is five-coordinated with square pyramid geometry. The members of the whole solid solutions exhibit bright coloration due to the pyramidal crystal field around the M2+ chromophore. The systematic investigation for these chromophores with d7, d8 and d9 electronic configuration allows obtaining various site distortions (characterized from X-ray diffraction) and original colorations like the orange nickel-doped compounds, the bright cyan copper-doped compounds or the grey cobalt-doped compounds. In these latter, while a part of strontium is substituted for barium of calcium, the grey coloration can be shift on the green to red colorimetric parameter axis, recalling somewhat the “alexandrite effect”.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Dyes and Pigments - Volume 104, May 2014, Pages 67-74
Journal: Dyes and Pigments - Volume 104, May 2014, Pages 67-74
نویسندگان
A. El Jazouli, B. Tbib, A. Demourgues, M. Gaudon,