Jeffrey D. Einkauf
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View article: Photo-DAC: Ambient temperature direct air capture light-driven by a photobase
Photo-DAC: Ambient temperature direct air capture light-driven by a photobase Open
Direct air capture (DAC) is considered an important element in our efforts to reduce atmospheric CO2, yet the high energies and temperatures involved in current DAC technologies make their large-scale deployment largely impractical and eco…
View article: Quantum Crystallography combined with Neutron Study: Molecular Insights of Crystal Engineering for Carbon Capture Materials
Quantum Crystallography combined with Neutron Study: Molecular Insights of Crystal Engineering for Carbon Capture Materials Open
Crystal engineering plays a pivotal role in the development of materials for carbon capture applications [1]. Various types of materials, such as porous carbon materials, metal-organic frameworks (MOFs), and chitosan hybrid aerogels, have …
View article: Bulk Anion Recognition Kinetically Holds Back Interfacial Adsorption
Bulk Anion Recognition Kinetically Holds Back Interfacial Adsorption Open
The competition between bulk and interfacial phenomena underlies many key processes in complex chemical phenomena and transport. While competitive processes are often framed in a thermodynamic context, opportunities to leverage transient s…
View article: Photoswitching dynamics of a guanidine anion receptor
Photoswitching dynamics of a guanidine anion receptor Open
The electronic excited-state dynamics of a photoswitchable molecule with an exceptional functionality for controllable anion binding is studied through combining time-resolved fluorescence spectroscopic measurements with theoretical calcul…
View article: Remote sensing of Pu in uranyl nitrate crystals using reflectance spectroscopy and chemometrics
Remote sensing of Pu in uranyl nitrate crystals using reflectance spectroscopy and chemometrics Open
Remote quantification of Pu( vi ) (0–5 mol%) co-crystallized with U in uranyl nitrate hexahydrate (UNH) crystals was achieved in a glove box using reflectance spectroscopy coupled with chemometric modeling.
View article: Remote Sensing of Nitric Acid and Temperature via Design of Experiments, Chemometrics, and Raman Spectroscopy
Remote Sensing of Nitric Acid and Temperature via Design of Experiments, Chemometrics, and Raman Spectroscopy Open
This study presents an effective method for the quantification of nitric acid (0.1-9 M) and the temperature (20-60 °C) through optimal experimental design, chemometrics, and Raman spectroscopy. Raman spectroscopy can be deployed using fibe…
View article: A New Triketone Ligand for Extraction of Lithium from Brines**
A New Triketone Ligand for Extraction of Lithium from Brines** Open
Recovery of lithium from brines by liquid‐liquid solvent extraction (LLE) with diketones and synergistic co‐ligands has been investigated for decades, but industrial application has been limited. In pursuit of a ligand with improved proper…
View article: Tetradentate Ligand’s Chameleon-Like Behavior Offers Recognition of Specific Lanthanides
Tetradentate Ligand’s Chameleon-Like Behavior Offers Recognition of Specific Lanthanides Open
The surging demand for high-purity individual lanthanides necessitates the development of novel and exceptionally selective separation strategies. At the heart of these separation systems is an organic compound that, based on its structura…
View article: Leveraging design of experiments to build chemometric models for the quantification of uranium (VI) and HNO3 by Raman spectroscopy
Leveraging design of experiments to build chemometric models for the quantification of uranium (VI) and HNO3 by Raman spectroscopy Open
Partial least squares regression (PLSR) and support vector regression (SVR) models were optimized for the quantification of U(VI) (10–320 g L −1 ) and HNO 3 (0.6–6 M) by Raman spectroscopy with optimized calibration sets chosen by optimal …
View article: Observation of a promethium complex in solution
Observation of a promethium complex in solution Open
Lanthanide rare-earth metals are ubiquitous in modern technologies 1–5 , but we know little about chemistry of the 61st element, promethium (Pm) 6 , a lanthanide that is highly radioactive and inaccessible. Despite its importance 7,8 , Pm …
View article: Direct Air Capture of CO <sub>2</sub> via Reactive Crystallization
Direct Air Capture of CO <sub>2</sub> via Reactive Crystallization Open
Atmospheric CO2 removal using engineered chemical processes, aka direct air capture (DAC), has become an essential component of our available portfolio for mitigating climate change. Here we describe a promising approach to DAC based on re…
View article: Direct Air Capture of CO2 via Reactive Crystallization
Direct Air Capture of CO2 via Reactive Crystallization Open
Atmospheric CO2 removal using engineered chemical processes, aka direct air capture (DAC), has become an essential component of our available portfolio for mitigating climate change. Here we describe a promising approach to DAC based on re…
View article: Synergistic Assembly of Charged Oligomers and Amino Acids at the Air–Water Interface: An Avenue toward Surface-Directed CO<sub>2</sub> Capture
Synergistic Assembly of Charged Oligomers and Amino Acids at the Air–Water Interface: An Avenue toward Surface-Directed CO<sub>2</sub> Capture Open
Interfaces are considered a major bottleneck in the capture of CO2 from air. Efforts to design surfaces to enhance CO2 capture probabilities are challenging due to the remarkably poor understanding of chemistry and self-assembly taking pla…
View article: Direct Air Capture of CO2 via Reactive Crystallization
Direct Air Capture of CO2 via Reactive Crystallization Open
Atmospheric CO2 removal using engineered chemical processes, aka direct air capture (DAC), has become an essential component of our available portfolio for mitigating climate change. Here we describe a promising approach to DAC based on re…
View article: Photoisomerization mechanism of iminoguanidinium receptors from spectroscopic methods and quantum chemical calculations
Photoisomerization mechanism of iminoguanidinium receptors from spectroscopic methods and quantum chemical calculations Open
The multiconfigurational reaction path features a small barrier for a pyridine-appended iminoguanidinium photoswitch from the Franck–Condon geometry of the E isomer in the π–π* state to the ground state Z photoproduct via the conical inter…
View article: Reaction Layer Formation on MgO in the Presence of Humidity
Reaction Layer Formation on MgO in the Presence of Humidity Open
Mineralization by MgO is an attractive potential strategy for direct air capture (DAC) of CO2 due to its tendency to form carbonate phases upon exposure to water and CO2. Hydration of MgO during this process is typically assumed to not be …
View article: CCDC 2218523: Experimental Crystal Structure Determination
CCDC 2218523: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2218526: Experimental Crystal Structure Determination
CCDC 2218526: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2218522: Experimental Crystal Structure Determination
CCDC 2218522: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2218519: Experimental Crystal Structure Determination
CCDC 2218519: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2218531: Experimental Crystal Structure Determination
CCDC 2218531: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2218527: Experimental Crystal Structure Determination
CCDC 2218527: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2218525: Experimental Crystal Structure Determination
CCDC 2218525: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2218528: Experimental Crystal Structure Determination
CCDC 2218528: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2218521: Experimental Crystal Structure Determination
CCDC 2218521: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2218529: Experimental Crystal Structure Determination
CCDC 2218529: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …