Q-band Electron Nuclear Double Resonance of Ferric Bleomycin and Activated Bleomycin Complexes with DNA:  Fe(III) Hyperfine Interaction with31P and DNA-Induced Perturbation to Bleomycin Structure

1998 ◽  
Vol 120 (5) ◽  
pp. 1030-1033 ◽  
Author(s):  
Andrei Veselov ◽  
Richard M. Burger ◽  
Charles P. Scholes
1986 ◽  
Vol 69 ◽  
Author(s):  
Martin Stutzmann ◽  
David K. Biegelsen

AbstractThe hyperfine interaction between electronic and nuclear spins in hydrogenated amorphous silicon has been observed for the various paramagnetic defects in this material by electron spin resonance (ESR) and electron nuclear double resonance (ENDOR). The large hyperfine interaction between dangling bonds and 29Si as well as between donor electrons and 31p or 75 As nuclei can be resolved in ESR and provides direct information about the structure of the underlying electronic states. The smaller dipolar coupling of all paramagnetic states to more distant nuclei leads to an ENDOR response near the free nuclear resonance frequencies, which can be used to study the coupling of the electronic and nuclear spin system to the lattice phonons and to each other.


Author(s):  
F. K. Koschnick ◽  
K. Michael ◽  
J.-M. Spaeth ◽  
B. Beaumont ◽  
Pierre Gibart

Optically detected electron nuclear double resonance (ODENDOR) was measured in the 2.2 eV ‘yellow’ luminescence band associated with the residual donor in n-type undoped GaN. The ODENDOR lines are due to gallium and show a quadrupole splitting which can be described with an axial tensor. The quadrupole parameter was estimated to be q(69Ga) = 1/2 Qzz = 0.22 MHz. A hyperfine interaction for 69Ga of about 0.3 MHz for the isotropic and of about 0.15 MHz for the anisotropic part was estimated from the width of the ODENDOR lines. It is tentatively suggested that a Ga interstitial is the residual donor.


2005 ◽  
Vol 483-485 ◽  
pp. 351-354 ◽  
Author(s):  
Nguyen Tien Son ◽  
Junichi Isoya ◽  
Satoshi Yamasaki ◽  
Erik Janzén

Shallow N donors in n-type 4H-SiC were studied by electron paramagnetic resonance (EPR) and electron nuclear double resonance (ENDOR). For the N donor at the cubic site (Nk) in 4H-SiC, the hyperfine (hf) constants of the interaction with the nearest neighbour (NN) 29Si atom along the c axis were determined as A = 41.07 MHz and A^ = 41.31 MHz. For other three NN Si atoms in the basal plane, the hf tensor has C1h symmetry and the principal values Axx = 5.94 MHz, Ayy = 5.06 MHz and Azz = 14.25 MHz. Our EPR and ENDOR observations unambiguously confirm that the N donor occupies the C site in 4H-SiC lattice and also reveal a considerable amount of the spin density of Nk (~23.9%) which was not obtained in previous studies.


Biochemistry ◽  
2016 ◽  
Vol 55 (40) ◽  
pp. 5714-5725 ◽  
Author(s):  
Chang Sun ◽  
Alexander T. Taguchi ◽  
Josh V. Vermaas ◽  
Nathan J. Beal ◽  
Patrick J. O’Malley ◽  
...  

2000 ◽  
Vol 112 (16) ◽  
pp. 7102-7110 ◽  
Author(s):  
X. L. R. Dauw ◽  
G. J. B. van den Berg ◽  
D. J. van den Heuvel ◽  
O. G. Poluektov ◽  
E. J. J. Groenen

1996 ◽  
Vol 118 (48) ◽  
pp. 12141-12153 ◽  
Author(s):  
J. W. A. Coremans ◽  
O. G. Poluektov ◽  
E. J. J. Groenen ◽  
G. W. Canters ◽  
H. Nar ◽  
...  

1997 ◽  
Vol 272 (1) ◽  
pp. 203-209 ◽  
Author(s):  
Siegfried M. Musser ◽  
Yang-Cheng Fann ◽  
Ryszard J. Gurbiel ◽  
Brian M. Hoffman ◽  
Sunney I. Chan

Sign in / Sign up

Export Citation Format

Share Document