Distinguishing steric and electrostatic molecular probe orientational ordering via their effects on reorientation-induced spectral diffusion

2021 ◽  
Vol 154 (24) ◽  
pp. 244104
Author(s):  
David J. Hoffman ◽  
Sebastian M. Fica-Contreras ◽  
Junkun Pan ◽  
Michael D. Fayer
Keyword(s):  
Spectral Diffusion ◽  
Molecular Probe ◽  
Orientational Ordering

Orientational ordering in methane condensates in mesoporous SiO2modifications at low temperatures

2000 ◽  
Vol 10 (PR7) ◽  
pp. Pr7-137-Pr7-141 ◽  
Author(s):  
B. Asmussen ◽  
D. Balszunat ◽  
C. Gutt ◽  
W. Press ◽  
W. Langel ◽  
...  
Keyword(s):  
Low Temperatures ◽  
Orientational Ordering

Orientational ordering in solid hydrogen

1976 ◽  
Vol 37 (7-8) ◽  
pp. 981-989 ◽  
Author(s):  
N.S. Sullivan
Keyword(s):  
Solid Hydrogen ◽  
Orientational Ordering

MicroPET Imaging of Breast Cancer with a Dual-Targeted Molecular Probe 68Ga-RGD-BBN

2011 ◽  
Vol 27 (4) ◽  
pp. 335-344 ◽  
Author(s):  
Huiyun ZHAO ◽  
Yan LIU ◽  
Bing JIA ◽  
Fan WANG ◽  
Zhaofei LIU
Keyword(s):  
Breast Cancer ◽  
Molecular Probe ◽  
Micropet Imaging

scholarly journals On the Mutual Relationships between Molecular Probe Mobility and Free Volume and Polymer Dynamics in Organic Glass Formers: cis-1,4-poly(isoprene)

Polymers ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 294
Author(s):  
Helena Švajdlenková ◽  
Ondrej Šauša ◽  
Sergey V. Adichtchev ◽  
Nikolay V. Surovtsev ◽  
Vladimir N. Novikov ◽  
...  
Keyword(s):  
Free Volume ◽  
Spin Probe ◽  
Hyperfine Coupling Constant ◽  
Organic Glass ◽  
Molecular Probe ◽  
Positron Annihilation Lifetime ◽  
Broadband Dielectric Spectroscopy ◽  
Relaxation Modes ◽  
Reorientation Dynamics ◽  
In Cis

We report on the reorientation dynamics of small spin probe 2,2,6,6-tetramethylpiperidinyl-1-oxyl (TEMPO) in cis-1,4-poly(isoprene) (cis-1,4-PIP10k) from electron spin resonance (ESR) and the free volume of cis-1,4-PIP10k from positron annihilation lifetime spectroscopy (PALS) in relation to the high-frequency relaxations of cis-1,4-PIP10k using light scattering (LS) as well as to the slow and fast processes from broadband dielectric spectroscopy (BDS) and neutron scattering (NS). The hyperfine coupling constant, 2Azz′(T), and the correlation times, τc(T), of cis-1,4-PIP10k/TEMPO system as a function of temperature exhibit several regions of the distinct spin probe TEMPO dynamics over a wide temperature range from 100 K up to 350 K. The characteristic ESR temperatures of changes in the spin probe dynamics in cis-1,4-PIP10k/TEMPO system are closely related to the characteristic PALS ones reflecting changes in the free volume expansion from PALS measurement. Finally, the time scales of the slow and fast dynamics of TEMPO in cis-1,4-PIP10k are compared with all of the six known slow and fast relaxation modes from BDS, LS and NS techniques with the aim to discuss the controlling factors of the spin probe reorientation mobility in polymer, oligomer and small molecular organic glass-formers.

Photoinduced charge-separated molecular probe for ultrasensitive spectrum analysis and rapid colorimetric detection of platinum ions

2021 ◽  
Vol 1153 ◽  
pp. 338278
Author(s):  
Wenhui Feng ◽  
Zhuoma Zengji ◽  
Thomas T. Testoff ◽  
Tianyang Wang ◽  
Xilong Yan ◽  
...  
Keyword(s):  
Spectrum Analysis ◽  
Colorimetric Detection ◽  
Molecular Probe ◽  
Photoinduced Charge

scholarly journals Effect of Bjerrum pairs on electrostatic properties in an electrolyte solution near charged surfaces: A mean-field approach

2021 ◽  
Author(s):  
Jun-Sik Sin
Keyword(s):  
Electrolyte Solution ◽  
Size Effects ◽  
Mean Field ◽  
Finite Size ◽  
Ion Association ◽  
Finite Size Effects ◽  
Field Approach ◽  
Electrostatic Properties ◽  
Charged Surfaces ◽  
Orientational Ordering

In this paper, we investigate the consequences of ion association, coupled with the considerations of finite size effects and orientational ordering of Bjerrum pairs as well as ions and water...

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