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View article: NASICON‐NaV<sub>0.25</sub>Al<sub>0.25</sub>Nb<sub>1.5</sub>(PO<sub>4</sub>)<sub>3</sub>/C: A High‐Rate and Robust Anode for Fast Charging and Long‐Life Sodium‐Ion Batteries
NASICON‐NaV<sub>0.25</sub>Al<sub>0.25</sub>Nb<sub>1.5</sub>(PO<sub>4</sub>)<sub>3</sub>/C: A High‐Rate and Robust Anode for Fast Charging and Long‐Life Sodium‐Ion Batteries Open
Nb‐based NAtrium Super Ionic CONductor (NASICON) frameworks (e.g., Nb 2 (PO 4 ) 3 and Na 1.5 V 0.5 Nb 1.5 (PO 4 ) 3 ) are emerging as the attractive Na‐ion anodes due to their lower intercalation voltage (≈1.4–1.2 V vs Na + /Na 0 ) and hig…
View article: Dynamic nuclear polarization mechanism in isolated NV-centers at high magnetic fields
Dynamic nuclear polarization mechanism in isolated NV-centers at high magnetic fields Open
Nitrogen vacancy centers in diamonds are promising spin-based quantum sensors and qubits. These optically addressable paramagnetic point defects have the potential to allow efficient dynamic nuclear polarization (DNP) under ambient conditi…
View article: Role of Quantum Coherence in Chirped Dynamic Nuclear Polarization
Role of Quantum Coherence in Chirped Dynamic Nuclear Polarization Open
Dynamic Nuclear Polarization (DNP) is transforming NMR and MRI by significantly enhancing sensitivity through the transfer of polarization from electron spins to nuclear spins via microwave irradiation. However, the use of monochromatic co…
View article: Effect of Ti-doping on the dimer transition in Lithium Ruthenate
Effect of Ti-doping on the dimer transition in Lithium Ruthenate Open
We carried out a comprehensive crystal structure characterization of Ti-doped lithium ruthenate (Li$_2$Ti$_x$Ru$_{1-x}$O$_3$), to investigate the effect of Ti-doping on the structural phase transition. Experimental tools sensitive to the a…
View article: Dynamic Nuclear Polarization Enhanced Multiple-Quantum Spin Counting of Molecular Assemblies in Vitrified Solutions
Dynamic Nuclear Polarization Enhanced Multiple-Quantum Spin Counting of Molecular Assemblies in Vitrified Solutions Open
Crystallization pathways are essential to various industrial, geological, and biological processes. In nonclassical nucleation theory, prenucleation clusters (PNCs) form, aggregate, and crystallize to produce higher order assemblies. Micro…
View article: Optimal control-based solid-state NMR cross-polarization between anisotropic nuclear spins
Optimal control-based solid-state NMR cross-polarization between anisotropic nuclear spins Open
Cross-polarization (CP) is an indispensable part of solid-state nuclear magnetic resonance (NMR) spectroscopy to enhance sensitivity and extract quantitative structural information. However, the most common versions of the CP experiments a…
View article: Optimal control-based solid-state NMR cross-polarization between anisotropic nuclear spins
Optimal control-based solid-state NMR cross-polarization between anisotropic nuclear spins Open
Cross-polarization (CP) is an indispensable part of solid-state nuclear magnetic resonance (NMR) spectroscopy to enhance sensitivity and extract quantitative structural information. However, the most common versions of the CP experiments a…
View article: Dynamic Nuclear Polarization Enhanced Multiple Quantum Spin Counting of Molecular Assemblies in Vitrified Solutions
Dynamic Nuclear Polarization Enhanced Multiple Quantum Spin Counting of Molecular Assemblies in Vitrified Solutions Open
Crystallization pathways are essential to various industrial, geological, and biolog- ical processes. In nonclassical nucleation theory, prenucleation clusters (PNCs) form, aggregate and crystallize to produce higher order assemblies. Micr…
View article: Dynamic Nuclear Polarization Enhanced Multiple Quantum Spin Counting of Molecular Assemblies in Vitrified Solutions
Dynamic Nuclear Polarization Enhanced Multiple Quantum Spin Counting of Molecular Assemblies in Vitrified Solutions Open
Crystallization pathways are essential to various industrial, geological, and biolog- ical processes. In nonclassical nucleation theory, prenucleation clusters (PNCs) form, aggregate and crystallize to produce higher order assemblies. Micr…
View article: Embedding plasmonic nanoparticles in soft crystals: an approach exploiting CTAB–I structures
Embedding plasmonic nanoparticles in soft crystals: an approach exploiting CTAB–I structures Open
A new crystal polymorph of CTAB–I with smaller unit cell size and reduced cetyl chain mobility is observed. In situ embedding of plasmonic metal nanoparticles into this polymorph is realized leading to materials with strong plasmon–plasmon…
View article: The Dynamic Catalytic Activity of Phosphorus-containing Catalysts
The Dynamic Catalytic Activity of Phosphorus-containing Catalysts Open
The active site speciation of phosphorus-containing all-silica zeolites, P-zeosils, involves a dynamic distribution that is manipulated through controlled hydrolysis of the catalytic material. While water vapor is known to enhance the cata…
View article: The Dynamic Catalytic Activity of Phosphorus-containing Catalysts
The Dynamic Catalytic Activity of Phosphorus-containing Catalysts Open
The active site speciation of phosphorus-containing all-silica zeolites, P-zeosils, involves a dynamic distribution that is manipulated through controlled hydrolysis of the catalytic material. While water vapor is known to enhance the cata…
View article: Investigation of Cu-site disorder in undoped and doped BiCuSeO
Investigation of Cu-site disorder in undoped and doped BiCuSeO Open
We carried out X-ray diffraction and Extended X-ray Absorption Fine Structure (EXAFS) studies to investigate the origin of the low lattice thermal conductivity in BiCuSeO, and the role of silver (Ag) doping in doped samples. BiCuSeO is a p…
View article: Triangulating Dopant-Level Mn(II) Insertion in a Cs<sub>2</sub>NaBiCl<sub>6</sub>Double Perovskite Using Magnetic Resonance Spectroscopy
Triangulating Dopant-Level Mn(II) Insertion in a Cs<sub>2</sub>NaBiCl<sub>6</sub>Double Perovskite Using Magnetic Resonance Spectroscopy Open
Lead-free metal halide double perovskites are gaining increasing attention for optoelectronic applications. Specifically, doping metal halide double perovskites using transition metals enables broadband tailorability of the optical bandgap…
View article: Design of a cryogen-free high field dual EPR and DNP probe
Design of a cryogen-free high field dual EPR and DNP probe Open
We present the design and construction of a cryogen free, dual electron paramagnetic resonance (EPR) and nuclear magnetic resonance (NMR) probe for novel dynamic nuclear polarization (DNP) experiments and concurrent "in situ" analysis of D…
View article: Deuteron-proton isotope correlation spectroscopy of molecular solids
Deuteron-proton isotope correlation spectroscopy of molecular solids Open
A dissolution followed by recrystallization from a deuterated solvent allows the site-selective deuteration of labile protons in molecular solids. High yields of deuteration obtained by this approach facilitates the structure elucidation o…
View article: A unified description for polarization-transfer mechanisms in magnetic resonance in static solids: Cross polarization and DNP
A unified description for polarization-transfer mechanisms in magnetic resonance in static solids: Cross polarization and DNP Open
Polarization transfers are crucial building blocks in magnetic resonance experiments, i.e., they can be used to polarize insensitive nuclei and correlate nuclear spins in multidimensional nuclear magnetic resonance (NMR) spectroscopy. The …
View article: Role of electron spin dynamics and coupling network in designing dynamic nuclear polarization
Role of electron spin dynamics and coupling network in designing dynamic nuclear polarization Open
Dynamic nuclear polarization (DNP) has emerged as a powerful sensitivity booster of nuclear magnetic resonance (NMR) spectroscopy for the characterization of biological solids, catalysts and other functional materials, but is yet to reach …
View article: P-Site Structural Diversity and Evolution in a Zeosil Catalyst
P-Site Structural Diversity and Evolution in a Zeosil Catalyst Open
Phosphorus-modified siliceous zeolites, or P-zeosils, catalyze the selective dehydration of biomass derivatives to platform chemicals such as p-xylene and 1,3-butadiene. Water generated during these reactions is a critical factor in cataly…
View article: Phosphonate‐Modified UiO‐66 Brønsted Acid Catalyst and Its Use in Dehydra‐Decyclization of 2‐Methyltetrahydrofuran to Pentadienes
Phosphonate‐Modified UiO‐66 Brønsted Acid Catalyst and Its Use in Dehydra‐Decyclization of 2‐Methyltetrahydrofuran to Pentadienes Open
Phosphorus‐modified all‐silica zeolites exhibit activity and selectivity in certain Brønsted acid catalyzed reactions for biomass conversion. In an effort to achieve similar performance with catalysts having well‐defined sites, we report t…
View article: Phosphonate‐Modified UiO‐66 Brønsted Acid Catalyst and Its Use in Dehydra‐Decyclization of 2‐Methyltetrahydrofuran to Pentadienes
Phosphonate‐Modified UiO‐66 Brønsted Acid Catalyst and Its Use in Dehydra‐Decyclization of 2‐Methyltetrahydrofuran to Pentadienes Open
Phosphorus‐modified all‐silica zeolites exhibit activity and selectivity in certain Brønsted acid catalyzed reactions for biomass conversion. In an effort to achieve similar performance with catalysts having well‐defined sites, we report t…
View article: Vanadium_proton_DNP_data
Vanadium_proton_DNP_data Open
The file contains Raw data acquired on 6.9T magnet at 4K static conditions with and without microwave irradiation to record vanadium to proton polarization transfer. The data contains polarization buildup curves, DNP frequency profiles and…
View article: Tracing Dynamic Nuclear Polarization Pathways Using Transition Metal - Nuclear Spin Rulers
Tracing Dynamic Nuclear Polarization Pathways Using Transition Metal - Nuclear Spin Rulers Open
The ubiquitous technique of nuclear magnetic resonance (NMR) spectroscopy suffers from relatively low sensitivity due to the low polarization of nuclei. For decades, the technique of dynamic nuclear polarization (DNP) has been harnessed to…
View article: Tracing Dynamic Nuclear Polarization Pathways Using Transition Metal - Nuclear Spin Rulers
Tracing Dynamic Nuclear Polarization Pathways Using Transition Metal - Nuclear Spin Rulers Open
The ubiquitous technique of nuclear magnetic resonance (NMR) spectroscopy suffers from relatively low sensitivity due to the low polarization of nuclei. For decades, the technique of dynamic nuclear polarization (DNP) has been harnessed to…
View article: Surface chemical heterogeneity modulates silica surface hydration
Surface chemical heterogeneity modulates silica surface hydration Open
Significance Silica, conventionally known as “glass,” is a universally used material in catalysis, nanofabrication, and many other applications, but details of its surface chemistry and interactions with water are notoriously complicated a…
View article: Off-resonance NOVEL
Off-resonance NOVEL Open
Dynamic nuclear polarization (DNP) is theoretically able to enhance the signal in nuclear magnetic resonance (NMR) experiments by a factor γe/γn, where γ’s are the gyromagnetic ratios of an electron and a nuclear spin. However, DNP enhance…
View article: Proton-Assisted Recoupling (PAR) in Peptides and Proteins
Proton-Assisted Recoupling (PAR) in Peptides and Proteins Open
Proton-assisted recoupling (PAR) is examined by exploring optimal experimental conditions and magnetization transfer rates in a variety of biologically relevant nuclear spin-systems, including simple amino acids, model peptides, and two pr…