کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1442051 | 1509432 | 2011 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
3-Carbaldehyde-substituted 2,3′-biimidazo[1,2-a]pyridin-2′-one radicals: Interesting π-stacking structures and magnetic properties
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
بیومتریال
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چکیده انگلیسی
A new 3-formyl-2,3′-biimidazo[1,2-a]pyridin-2′-one radical was synthesized via Vilsmeier reaction under mild conditions, which exists as 1D double-stranded chain formed by lateral close contacts between π-dimers. Its perchlorate salt exists as 1D slipped π-stacking chain. The different stacking structures obviously affect their magnetic and photoluminescence properties in solid state. Neutral radical shows a dominant antiferromagnetic interaction between radicals and the magnetic phase transition at ∼72 K, while radical salt exhibits a strong irreversibility between FC and ZFC states, attributed to the anisotropic contraction and nonuniform slippage of π-stacking chain.
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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Synthetic Metals - Volume 161, Issues 9–10, May 2011, Pages 713–717
Journal: Synthetic Metals - Volume 161, Issues 9–10, May 2011, Pages 713–717
نویسندگان
Yingzhou Li, Guoping Yong, Yiman Zhang, Chongfu Li, Wenlong She,