Reducing the spin-spin interaction of stable carbon radicals

被引:36
作者
Green, Uri [1 ,2 ]
Aizenshtat, Zeev [1 ]
Ruthstein, Sharon [3 ]
Cohen, Haim [2 ,4 ]
机构
[1] Hebrew Univ Jerusalem, Inst Chem, IL-91905 Jerusalem, Israel
[2] Ariel Univ, Dept Biol Chem, Ariel, Israel
[3] Bar Ilan Univ, Dept Chem, Ramat Gan, Israel
[4] Ben Gurion Univ Negev, Dept Chem, Beer Sheva, Israel
关键词
RESONANCE; EPR; COALS;
D O I
10.1039/c3cp50533b
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We report the discovery that a flow of CO2, N-2 or He can sufficiently reduce the spin-spin interactions of specific stable carbon centered radicals by displacing the molecular oxygen in the atmosphere enabling their detection via electron paramagnetic resonance (EPR). This finding unlike other reported effects on carbon radicals occurs under STP conditions and is reversible.
引用
收藏
页码:6182 / 6184
页数:3
相关论文
共 16 条
[1]   ELECTRON-SPIN-RESONANCE OF STABILIZED FREE-RADICALS IN SEDIMENTARY ORGANIC-MATTER [J].
AIZENSHTAT, Z ;
PINSKY, I ;
SPIRO, B .
ORGANIC GEOCHEMISTRY, 1986, 9 (06) :321-329
[2]  
Dellinger B., 2007, P COMBUST INST, P31
[3]   ELECTRON-SPIN RESONANCE STUDIES .37. OXIDATION OF BETA-HYDROXY-SULFIDES BY HYDROXYL RADICAL AND STRUCTURAL FEATURES OF SULFUR-CONJUGATED RADICALS [J].
GILBERT, BC ;
LARKIN, JP ;
NORMAN, ROC .
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2, 1973, (03) :272-277
[4]   Stable radicals formation in coals undergoing weathering: effect of coal rank [J].
Green, Uri ;
Aizenshtat, Zeev ;
Ruthstein, Sharon ;
Cohen, Haim .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2012, 14 (37) :13046-13052
[5]   CO2 Adsorption Inside the Pore Structure of Different Rank Coals during Low Temperature Oxidation of Open Air Coal Stockpiles [J].
Green, Uri ;
Aizenstat, Zeev ;
Gieldmeister, Franz ;
Cohen, Haim .
ENERGY & FUELS, 2011, 25 (09) :4211-4215
[6]   Electron paramagnetic resonance (EPR) studies on stable and transient radicals in humic acids from compost, soil, peat and brown coal [J].
Jezierski, A ;
Czechowski, F ;
Jerzykiewicz, M ;
Chen, Y ;
Drozd, J .
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, 2000, 56 (02) :379-385
[7]   Electron paramagnetic resonance study of nanostructured graphite [J].
Kausteklis, Jonas ;
Cevc, Pavel ;
Arcon, Denis ;
Nasi, Lucia ;
Pontiroli, Daniele ;
Mazzani, Marcello ;
Ricco, Mauro .
PHYSICAL REVIEW B, 2011, 84 (12)
[8]   Regulation of neuronal SNARE assembly by the membrane [J].
Kweon, DH ;
Kim, CS ;
Shin, YK .
NATURE STRUCTURAL BIOLOGY, 2003, 10 (06) :440-447
[9]  
Merianos HJ, 2000, NAT STRUCT BIOL, V7, P205
[10]   EPR study of the adsorption of dioxin vapours onto microporous carbons and mesoporous silica [J].
Ottaviani, M. Francesca ;
Mazzeo, Roberto ;
Turro, Nicholas J. ;
Lei, Xuegong .
MICROPOROUS AND MESOPOROUS MATERIALS, 2011, 139 (1-3) :179-188