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有机自由基 [磁性材料]

 Ferromagnetic and ferrimagnetic properties of metal compounds are based on contributions of unpaired d- or f-electrons of transition or lanthanoid metals. On the other hand, magnetic properties of metal-free organic compounds are due to unpaired π-electrons. Normally, π-electrons are favorable to electrical conduction in material science, because they are movable by the π-conjugation effect, but they have received less attention for magnetic materials. However, diverse chemical modifications of an organic molecule have produced organic radical-based ferromagnets.1,2) It is known that the charge transfer complex obtained from fullerene with tetrakis(dimethylamino)ethylene (TDAE) becomes an organic magnet.3) In addition to using a π-conjugated organic radical, localized free radical species also provide organic magnets. 4-Nitrophenylnitronyl nitroxide (NPNN) was the first organic ferromagnet in a pure organic radical.4) Nogami et al. reported that 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO) and its analogues became ferromagnets or antiferromagnets.5,6) Furthermore, 1,1-diphenyl-2-picrylhydrazyl (DPPH) is an antiferromagnet at extremely low temperature.
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产品编码 O0266
CAS RN 2896-70-0
纯度/分析方法 >95.0%(GC)(T)

产品编码 A1343
CAS RN 14691-88-4
纯度/分析方法 >97.0%(GC)

产品编码 C1406
CAS RN 2154-68-9
纯度/分析方法 >98.0%(T)(HPLC)

产品编码 C1432
CAS RN 36775-23-2
纯度/分析方法 >96.0%(HPLC)

产品编码 I0486
CAS RN 36410-81-8
纯度/分析方法 >97.0%(GC)(T)

产品编码 D2399
CAS RN 53034-38-1
纯度/分析方法 >97.0%(T)(HPLC)

产品编码 B5642
CAS RN 2516-92-9
纯度/分析方法 >98.0%(T)

产品编码 C1428
CAS RN 37149-18-1
纯度/分析方法 >97.0%(GC)(T)

产品编码 T3169
CAS RN 147045-24-7
纯度/分析方法 >98.0%(GC)(T)

产品编码 H0865
CAS RN 2226-96-2
纯度/分析方法 >98.0%(GC)

产品编码:   O0266 | 纯度/分析方法   >95.0%(GC)(T)

产品编码:   A1343 | 纯度/分析方法   >97.0%(GC)

产品编码:   C1406 | 纯度/分析方法   >98.0%(T)(HPLC)

产品编码:   I0486 | 纯度/分析方法   >97.0%(GC)(T)

产品编码:   D2399 | 纯度/分析方法   >97.0%(T)(HPLC)

产品编码:   B5642 | 纯度/分析方法   >98.0%(T)

产品编码:   C1428 | 纯度/分析方法   >97.0%(GC)(T)

产品编码:   H0865 | 纯度/分析方法   >98.0%(GC)

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