کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1333031 979063 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reinvestigation of hybrid organic–inorganic materials based on molybdate and piperazininum cations: Influence of the synthesis conditions on the chemical composition and characterizations of the photochromic properties
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Reinvestigation of hybrid organic–inorganic materials based on molybdate and piperazininum cations: Influence of the synthesis conditions on the chemical composition and characterizations of the photochromic properties
چکیده انگلیسی

The reactivity of the [Mo7O24]6− anion towards the structure directing-reagent piperazine (pipz) has been investigated and new synthetic routes to achieve the known (H2pipz)3[Mo8O27] 1, (H2pipz)[Mo3O10]·H2O 2, and (H2pipz)[Mo5O16] 3 molybdenum(VI) containing compounds are proposed. The role of the pH on the stabilization of the different compounds and their interconversion pathways is discussed. Compounds 1 and 2 show photochromic behavior under UV excitation, related to the particular organization of the organic component around the mineral framework. Their optical properties are reported and commented.

Three organic–inorganic hybrid materials have been prepared from the investigations of the [Mo7O24]6−/piperazine system in hydrothermal conditions. The role of the pH on the stabilization of the different polyoxomolybdate blocks in the materials i.e. 1∞[Mo3O10]2− and 1∞[Mo8O27]6− chains and 2∞[Mo5O16]2− layer has been investigated.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Solid State Chemistry - Volume 181, Issue 5, May 2008, Pages 1116–1122
نویسندگان
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