Results 41 to 50 of about 525,453 (332)

All-optical hyperpolarization of electron and nuclear spins in diamond [PDF]

, 2017
Low thermal polarization of nuclear spins is a primary sensitivity limitation for nuclear magnetic resonance. Here we demonstrate optically pumped (microwave-free) nuclear spin polarization of $^{13}\mathrm{C}$ and $^{15}\mathrm{N}$ in $^{15}\mathrm{N ...
Breeze, Ben G., Chou, Jyh-Pin, Gali, Adam, Green, Ben L., Hanna, John V., Ivády, Viktor, Newton, Mark E., Rees, Gregory J.   +7 more
core   +4 more sources

Synthesis, spectral, antimicrobial, and antifertility studies of tetraaza macrocyclic complexes of tin(II)

Main Group Metal Chemistry, 2013
A novel family of tetraazamacrocyclic complexes of Sn(II) has been synthesized by template condensation using 1,9-diaminononane with different dicarboxylic acids (malonic, succinic, glutaric, and adipic).
Bansal Nidhi, Dave Saurabh
doaj   +1 more source

Synthesis and Theoretical Calculations of Benzoic Acid-Based New Mono Azo Dye

Süleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2022
This study describes the synthesis, characterization and theoretical calculation of 3,5-dihydroxy-2-(naphthalen-2-yldiazenyl) benzoic acid. The synthesized compound was obtained through efficient synthetic route using 2-Naphthylamine and 3,5 ...
Mehmet Ulutürk, Çiğdem Karabacak Atay
doaj   +1 more source

Spin polarization contrast observed in GaAs by force-detected nuclear magnetic resonance

, 2002
We applied the recently developed technique of force-detected nuclear magnetic resonance (NMR) to observe 71Ga, 69Ga, and 75As in GaAs. The nuclear spin-lattice relaxation time is 21$\pm$5 min for 69Ga at $\sim 5$ K and 4.6 Tesla.
Fainchtein, Raul, Harrell, Lee E., Smith, Doran D., Thurber, Kent R.   +3 more
core   +1 more source

Structure Confirmation of Three New Psychoactive Substances and Qualitative Identification of Unknown Substances

Fayixue Zazhi
ObjectiveTo establish the structural confirmation methods of three suspected new psychoactive substances （NPSs）, and explore a more general qualitative testing method.MethodsInfrared absorption spectroscopy （IR）, gas chromatography-mass spectrometry （GC ...
NIE Zong-yang, HU Wei, LI Ling-yu, ZHANG Qing-bo, HUANG Xin, LI Bo   +5 more
doaj   +1 more source

Gate-controlled nuclear magnetic resonance in an AlGaAs/GaAs quantum Hall device

, 2006
We study the resistively detected nuclear magnetic resonance (NMR) in an AlGaAs/GaAs quantum Hall device with a side gate. The strength of the hyperfine interaction between electron and nuclear spins is modulated by tuning a position of the two ...
K. Hamaya, S. Masubuchi, Slichter C. P., T. Machida   +3 more
core   +1 more source

Magnetic and Structural Studies of the Quasi-Two-Dimensional Spin-Gap System (CuCl)LaNb2O7 [PDF]

, 2007
We report magnetization, nuclear magnetic resonance (NMR), nuclear quadrupole resonance (NQR), and transmission electron microscopy (TEM) studies on the quasi-two-dimensional spin-gap system (CuCl)LaNb2O7, a possible candidate for the J1-J2 model on a ...
Abragam A., Caruntu G., Inagaki Y., Kageyama H., Kageyama H., Kitada A., Kodenkandath T. A., Misguich G., Oba N., Oba N., Pennington C. H., Read N., Shannon N., Shannon N., Slichter C. P., Stauss G. H., Whangbo M.-H.   +16 more
core   +1 more source

Targeting TNBC: core–shell polycationic polyurea dendrimers with inherent anticancer activity

FEBS Open Bio, EarlyView.
Core–shell polycationic PURE dendrimers were tested in TNBC‐derived tumor models. Both formulations selectively targeted TNBC and effectively reduced tumor volume. PUREG4‐OEI48 suppressed tumor growth without detectable toxicity, whereas PUREG4‐OCEI24, despite showing efficacy, induced hepatic toxicity.
Adriana Cruz, Bruna Abreu, Cindy Mendes, Catarina Freitas‐Dias, Filipe Gonçalves, Fernanda Silva, José Ramalho, Saudade André, Vasco D. B. Bonifácio, Jacinta Serpa   +9 more
wiley   +1 more source

Pushing nuclear magnetic resonance sensitivity limits with microfluidics and photo-chemically induced dynamic nuclear polarization

Nature Communications, 2018
Nuclear magnetic resonance (NMR) spectroscopy is a powerful technique with an inherently low sensitivity. Here, the authors present a combination of microcoils with photo-chemically induced dynamic nuclear polarization to boost NMR sensitivity down to ...
Miguel Mompeán, Rosa M. Sánchez-Donoso, Antonio de la Hoz, Vittorio Saggiomo, Aldrik H. Velders, M. Victoria Gomez   +5 more
doaj   +1 more source

Unusual hyperfine interaction of Dirac electrons and NMR spectroscopy in graphene

, 2009
Theory of nuclear magnetic resonance (NMR) in graphene is presented. The canonical form of the electron-nucleus hyperfine interaction is strongly modified by the linear electronic dispersion.
A. Abragam, Balázs Dóra, C. P. Slichter, Ferenc Simon, J. Winter   +4 more
core   +1 more source