Assembly of USPIO/MOF nanoparticles with high proton relaxation rates for ultrasensitive magnetic resonance sensing

Author(s):  
Zhou Xu ◽  
Yanqiu Chen ◽  
Mao-Long Chen ◽  
Wei Chen ◽  
Yunhui Cheng

Transverse proton relaxation time (T2)-mediated magnetic resonance sensing (MRS) with simple pretreatment have drawn increasing attention for the development of biosensors, whereas conventional MRS is not competent for detecting trace...

1978 ◽  
Vol 33 (5-6) ◽  
pp. 305-316 ◽  
Author(s):  
H.-D. Lüdemann ◽  
H. Pladi ◽  
E. Westhof ◽  
L. B. Townsend

The solution conformations of 3-deazaadenosine, 3-deaza-8-azaadenosine, and benzimidazole-1-β- ᴅ-riboside have been determined by nuclear magnetic resonance methods in aqueous and ammonia solutions. The two-state S ⇄ N model of Altona and Sundaralingam is used to analyse the ribose moiety. In order to characterize the orientation of the base relative to the ribose, longitudinal proton relaxation time and nuclear Overhauser enhancement measurements have been carried out. It is shown that 3-deazaadenosine and benzimidazole-1-β-ᴅ-riboside exist preferentially in the S- syn-g+/t (70%) and the N-anti-g+/t (30%) conformation families. In the case of 3-deaza-8-aza- adenosine, some destabilization of the g+rotamer occurs. In this case, the pulsed methods seem to indicate a preference of the base for the anti range.


1993 ◽  
Vol 28 (6) ◽  
pp. 529-532 ◽  
Author(s):  
ANU M. ALANEN ◽  
RIITA K. PARKKOLA ◽  
IRIS G.V. LILLSUNDE ◽  
KIMMO O.J. VIRTANEN ◽  
HANNU O. KALIMO ◽  
...  

1974 ◽  
Vol 48 (4) ◽  
pp. 295-297 ◽  
Author(s):  
Y.H. Tchao ◽  
S. Clement

1987 ◽  
Vol 11 (8) ◽  
pp. 605-614 ◽  
Author(s):  
S ZIMMERMAN ◽  
A ZIMMERMAN ◽  
I CAMERON ◽  
G FULLERTON ◽  
H SCHATTEN ◽  
...  

1986 ◽  
Vol 4 (4) ◽  
pp. 293-304 ◽  
Author(s):  
Shoji Naruse ◽  
Yoshiharu Horikawa ◽  
Chuzo Tanaka ◽  
Kimiyoshi Hirakawa ◽  
Hiroyasu Nishikawa ◽  
...  

1983 ◽  
Vol 116 (3) ◽  
pp. 409-414 ◽  
Author(s):  
I. L. Cameron ◽  
H. C. Dung ◽  
K. E. Hunter ◽  
C. F. Hazlewood

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