Paramagnetic centers in detonation nanodiamonds studied by CW and pulse EPR

被引：20

作者：

Fionov, A. V. ^{[1
]}

Lund, A. ^{[2
]}

Chen, W. M. ^{[2
]}

Rozhkova, N. N. ^{[3
]}

Buyanova, I. A. ^{[2
]}

Emel'yanova, G. I. ^{[1
]}

Gorlenko, L. E. ^{[1
]}

Golubina, E. V. ^{[1
]}

Lokteva, E. S. ^{[1
]}

Osawa, E. ^{[4
]}

Lunin, V. V. ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119992, Russia

[2] Linkoping Univ, Dept Phys Chem & Biol, S-58183 Linkoping, Sweden

[3] RAS, Inst Geol, Karelian Res Ctr, Petrozavodsk 185610, Russia

[4] Shinshu Univ, NanoCarbon Res Inst, Asama Res Extens Ctr, Nagano 3868567, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2010年 / 493卷 / 4-6期

关键词：

ELECTRON-SPIN-RESONANCE; CORE-SHELL STRUCTURE; MAGNETIC-RESONANCE; DEFECTS; DIAMOND; SURFACE; NMR; CVD; IDENTIFICATION; PARAMETERS;

D O I：

10.1016/j.cplett.2010.05.050

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：

Dispersed detonation nanodiamonds have been studied by continuous-wave (CW) and pulse EPR techniques. The spectrum of bulk radicals (g = 2.0025 +/- 0.0002, a Lorentz line shape with Delta H-pp = 0.95 +/- 0.05 mT) dominated in CW EPR and prevented to record spectra from other paramagnetic species. The pulse EPR-spectrum was the superposition of the distorted P1-center spectrum with parameters (g = 2.0025, A(xx) = 2.57 mT, A(yy) = 3.08 mT, A(zz) = 4.07 mT), the H1-center spectrum (g = 2.0028) and the single line (g = 2.0025, DHpp = 0.40 +/- 0.05 mT) from other centers which may be assigned to surface radicals. The concentration of P1-centers has been estimated by CW EPR as 2 +/- 1 ppm N. (C) 2010 Elsevier B. V. All rights reserved.

引用

页码：319 / 322

页数：4

共 43 条

[1] New prospects and frontiers of nanodiamond clusters [J].

Baidakova, Marina ;

Vul', Alexander .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2007, 40 (20) :6300-6311

[2] Electron spin resonance detection and identification of nitrogen centers in nanodiamonds [J].

Baranov, P. G. ;

Il'in, I. V. ;

Soltamova, A. A. ;

Vul', A. Ya. ;

Kidalov, S. V. ;

Shakhov, F. M. ;

Mamin, G. V. ;

Orlinskii, S. B. ;

Salakhov, M. Kh. .

JETP LETTERS, 2009, 89 (08) :409-413

[3] Can we predict the location of impurities in diamond nanoparticles? [J].

Barnard, A. S. ;

Sternberg, M. .

[4] Prediction and Measurement of the Size-Dependent Stability of Fluorescence in Diamond over the Entire Nanoscale [J].

Bradac, Carlo ;

Gaebel, Torsten ;

Naidoo, Nishen ;

Rabeau, James R. ;

Barnard, Amanda S. .

NANO LETTERS, 2009, 9 (10) :3555-3564

[5]

Brustolon M, 2003, PROG T CHEM, V10, P39

[6]

CHUKHAEVA SI, 1998, SVERKHTVERDYE MAT, P29

[7]

DEAN HO, 2010, NANODIAMONDS APPL BI, P288

[8] On elemental composition and crystal-chemical parameters of detonation nanodiamonds [J].

Dolmatov, V. Yu. .

JOURNAL OF SUPERHARD MATERIALS, 2009, 31 (03) :158-164

[9] Solid-State NMR Study of Nanodiamonds Produced by the Detonation Technique [J].

Dubois, Marc ;

Guerin, Katia ;

Petit, Elodie ;

Batisse, Nicolas ;

Hamwi, Andre ;

Komatsu, Naoki ;

Giraudet, Jerome ;

Pirotte, Pascal ;

Masin, Francis .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (24) :10371-10378

[10] Nonaromatic Core-Shell Structure of Nanodiamond from Solid-State NMR Spectroscopy [J].

Fang, XiaoWen ;

Mao, JingDong ;

Levin, E. M. ;

Schmidt-Rohr, Klaus .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (04) :1426-1435

← 1 2 3 4 5 →