کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10653536 | 1002885 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Reversible photomagnetism in a cobalt layered compound coupled with photochromic diarylethene
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Reversible photomagnetism in a cobalt layered compound coupled with photochromic diarylethene Reversible photomagnetism in a cobalt layered compound coupled with photochromic diarylethene](/preview/png/10653536.png)
چکیده انگلیسی
Photomagnetism is one of the most attractive topics in recent research on molecular solids. In order to produce a photo-controllable magnet, we have synthesized a novel organic-inorganic hybrid system coupled with a photochromic diarylethene anion, 2,2â²-dimethyl-3,3â²-(perfluorocyclopentene-1,2-diyl)bis(benzo[b]thiophene-6-sulfonate) (1a) and cobalt LDHs (layered double hydroxides). Based on the elemental analysis, the title compound, which was synthesized by the anion exchange reaction between Co2(OH)3(CH3COO)·H2O (2) and 1a, has the chemical composition, Co4(OH)7(1a)0.5·3H2O (3). Powder X-ray diffraction analysis revealed the interlayer distance of c=27.8 Ã
. The magnetic susceptibility measurements elucidated the ferromagnetic intra- and inter-layer interactions and the Curie temperature of Tc=9Â K. By UV irradiation of 313Â nm, 3 shows the photo-isomerization of diarylethene anion from the open form to the closed one in solid state, which leads to the decreases in the coercive field and the remnant magnetization. Furthermore, the photo-excited state is returned to the initial state (open form) almost reversibly by visible irradiation of 550Â nm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 134, Issue 11, June 2005, Pages 777-782
Journal: Solid State Communications - Volume 134, Issue 11, June 2005, Pages 777-782
نویسندگان
M. Okubo, M. Enomoto, N. Kojima,