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+)
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Structure and colour of diphosphate pigments with square pyramid environment around chromophore ions (Co2+, Ni2+, Cu2+)
چکیده انگلیسی
A series of diphosphate compounds of SrZn1−xMxP2O7 composition (M = 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
نویسندگان
, , , ,