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Gabriel CM, Pimentel BR, Gomez CA, Cedillo I, Rodriguez AA. Improved Purification of GalNAc-Conjugated Antisense Oligonucleotides Using Boronic Acids. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.1c00439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christopher M. Gabriel
- Department of Process Organic Chemistry, Ionis Pharmaceuticals, 2855 Gazelle Court, Carlsbad, California 92010, United States
| | - Brian R. Pimentel
- Department of Process Organic Chemistry, Ionis Pharmaceuticals, 2855 Gazelle Court, Carlsbad, California 92010, United States
| | - Christian A. Gomez
- Department of Process Organic Chemistry, Ionis Pharmaceuticals, 2855 Gazelle Court, Carlsbad, California 92010, United States
| | - Isaiah Cedillo
- Department of Process Organic Chemistry, Ionis Pharmaceuticals, 2855 Gazelle Court, Carlsbad, California 92010, United States
| | - Andrew A. Rodriguez
- Department of Process Organic Chemistry, Ionis Pharmaceuticals, 2855 Gazelle Court, Carlsbad, California 92010, United States
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Lu YS, Vijayakumar S, Chaix A, Pimentel BR, Bentz KC, Li S, Chan A, Wahl C, Ha JS, Hunka DE, Boss GR, Cohen SM, Sailor MJ. Remote Detection of HCN, HF, and Nerve Agent Vapors Based on Self-Referencing, Dye-Impregnated Porous Silicon Photonic Crystals. ACS Sens 2021; 6:418-428. [PMID: 33263399 DOI: 10.1021/acssensors.0c01931] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A one-dimensional photonic crystal is prepared from porous silicon (pSi) and impregnated with a chemically specific colorimetric indicator dye to provide a self-referenced vapor sensor for the selective detection of hydrogen fluoride (HF), hydrogen cyanide (HCN), and the chemical nerve agent diisopropyl fluorophosphate (DFP). The photonic crystal is prepared with two stop bands: one that coincides with the optical absorbance of the relevant activated indicator dye and the other in a spectrally "clear" region, to provide a reference. The inner pore walls of the pSi sample are then modified with octadecylsilane to provide a hydrophobic interior, and the indicator dye of interest is then loaded into the mesoporous matrix. Remote analyte detection is achieved by measurement of the intensity ratio of the two stop bands in the white light reflectance spectrum, which provides a means to reliably detect colorimetric changes in the indicator dye. Indicator dyes were chosen for their specificity for the relevant agents: rhodamine-imidazole (RDI) for HF and DFP, and monocyanocobinamide (MCbi) for HCN. The ratiometric readout allows detection of HF and HCN at concentrations (14 and 5 ppm, respectively) that are below their respective IDLH (immediately dangerous to life and health) concentrations (30 ppm for HF; 50 ppm for HCN); detection of DFP at a concentration of 114 ppb is also demonstrated. The approach is insensitive to potential interferents such as ammonia, hydrogen chloride, octane, and the 43-component mixture of VOCs known as EPA TO-14A, and to variations in relative humidity (20-80% RH). Detection of HF and HCN spiked into the complex mixture EPA TO-14A is demonstrated. The approach provides a general means to construct robust remote detection systems for chemical agents.
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Affiliation(s)
- Yi-Sheng Lu
- Materials Science and Engineering Program, University of California, San Diego, La Jolla, California 92093, United States
| | - Sanahan Vijayakumar
- Materials Science and Engineering Program, University of California, San Diego, La Jolla, California 92093, United States
| | - Arnaud Chaix
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Brian R. Pimentel
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Kyle C. Bentz
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Sheng Li
- Department of Medicine, University of California, San Diego, La Jolla, California 92093, United States
| | - Adriano Chan
- Department of Medicine, University of California, San Diego, La Jolla, California 92093, United States
| | - Charlotte Wahl
- Leidos, 10260 Campus Point Drive, San Diego, California 92121, United States
| | - James S. Ha
- Leidos, 10260 Campus Point Drive, San Diego, California 92121, United States
| | - Deborah E. Hunka
- Leidos, 10260 Campus Point Drive, San Diego, California 92121, United States
| | - Gerry R. Boss
- Department of Medicine, University of California, San Diego, La Jolla, California 92093, United States
| | - Seth M. Cohen
- Materials Science and Engineering Program, University of California, San Diego, La Jolla, California 92093, United States
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Michael J. Sailor
- Materials Science and Engineering Program, University of California, San Diego, La Jolla, California 92093, United States
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
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Palomba JM, Harvey SP, Kalaj M, Pimentel BR, DeCoste JB, Peterson GW, Cohen SM. High-Throughput Screening of MOFs for Breakdown of V-Series Nerve Agents. ACS Appl Mater Interfaces 2020; 12:14672-14677. [PMID: 31961131 DOI: 10.1021/acsami.9b21693] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Metal-organic frameworks (MOFs) have shown promise for the catalytic decomposition of chemical weapons. Finding the best materials for the degradation of nerve agents requires the ability to screen a high number of samples and elucidate the key parameters of effective catalysis. In this work, a high-throughput screening (HTS) method has been developed to evaluate MOFs as catalysts, specifically against the V-class of nerve agents. Over 100 MOFs have been tested using the V-class simulant, O,O-diethyl S-phenyl phosphorothioate (DEPPT), revealing good activity for some UiO-66 derivatives. A medium-throughput hydrolysis assay for the nerve agent O-ethyl S-[2-(diisopropylamino)ethyl]methylphosphonothioate (VX) was also performed using six MOFs selected from HTS and was validated by 31P NMR. The results demonstrated that the DEPPT-based assay is a good indicator of V-series agent reactivity and should be considered in addition to the common (4-nitrophenyl)phosphate (DMNP) assay that is used for G-series agents.
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Affiliation(s)
- Joseph M Palomba
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Steven P Harvey
- CCDC Chemical and Biological Center, US Army Combat Capabilities Development Command Chemical and Biological Center, 5183 Blackhawk Road, Aberdeen Proving Ground, Maryland 21020, United States
| | - Mark Kalaj
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Brian R Pimentel
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Jared B DeCoste
- CCDC Chemical and Biological Center, US Army Combat Capabilities Development Command Chemical and Biological Center, 5183 Blackhawk Road, Aberdeen Proving Ground, Maryland 21020, United States
| | - Gregory W Peterson
- CCDC Chemical and Biological Center, US Army Combat Capabilities Development Command Chemical and Biological Center, 5183 Blackhawk Road, Aberdeen Proving Ground, Maryland 21020, United States
| | - Seth M Cohen
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
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Zhanaidarova A, Jones SC, Despagnet-Ayoub E, Pimentel BR, Kubiak CP. Re(tBu-bpy)(CO)3Cl Supported on Multi-Walled Carbon Nanotubes Selectively Reduces CO2 in Water. J Am Chem Soc 2019; 141:17270-17277. [DOI: 10.1021/jacs.9b08445] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Almagul Zhanaidarova
- Department of Materials Science and Engineering, University of California, San Diego. 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093-0358, United States
| | - Simon C. Jones
- Electrochemical Technologies Group, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109, United States
| | - Emmanuelle Despagnet-Ayoub
- Electrochemical Technologies Group, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109, United States
- Norris Hall of Chemistry, Occidental College, 1600 Campus Road, Los Angeles, United States
| | - Brian R. Pimentel
- Department of Chemistry and Biochemistry, University of California, San Diego. 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093-0358, United States
| | - Clifford P. Kubiak
- Department of Materials Science and Engineering, University of California, San Diego. 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093-0358, United States
- Department of Chemistry and Biochemistry, University of California, San Diego. 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093-0358, United States
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Minelli M, Pimentel BR, Jue ML, Lively RP, Sarti GC. Analysis and utilization of cryogenic sorption isotherms for high free volume glassy polymers. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.03.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Pimentel BR, Lively RP. Propylene Enrichment via Kinetic Vacuum Pressure Swing Adsorption Using ZIF-8 Fiber Sorbents. ACS Appl Mater Interfaces 2018; 10:36323-36331. [PMID: 30270612 DOI: 10.1021/acsami.8b08983] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This work presents the synthesis, characterization, and implementation of ZIF-8/cellulose acetate fiber sorbents for the cyclic kinetic adsorption separation of an equimolar propane/propylene feed. These fiber sorbents are packed as structured mass-transfer contactors and employed in a two-bed vacuum pressure swing adsorption cycle without propylene product purge. The unoptimized adsorption cycle process produces a high-pressure product of up to 81% propane purity at 31% recovery at 0 °C. The effects of adsorption step time, temperature, and feed rate are investigated and presented as a purity/recovery trade-off. This work represents the first successful demonstration of a metal-organic framework fiber sorbent in a pressure swing adsorption cycle and the first use of metal-organic frameworks in a kinetic separation cycle.
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Affiliation(s)
- Brian R Pimentel
- School of Chemical & Biomolecular Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Ryan P Lively
- School of Chemical & Biomolecular Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
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Affiliation(s)
- Brian R. Pimentel
- Chemical and Biomolecular
Engineering, Georgia Institute of Technology ,311 Ferst Drive NW, Atlanta, Georgia 30318, United States
| | - Adam W. Fultz
- Chemical and Biomolecular
Engineering, Georgia Institute of Technology ,311 Ferst Drive NW, Atlanta, Georgia 30318, United States
| | - Kristin V. Presnell
- Chemical and Biomolecular
Engineering, Georgia Institute of Technology ,311 Ferst Drive NW, Atlanta, Georgia 30318, United States
| | - Ryan P. Lively
- Chemical and Biomolecular
Engineering, Georgia Institute of Technology ,311 Ferst Drive NW, Atlanta, Georgia 30318, United States
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Affiliation(s)
- Brian R. Pimentel
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive NW, Atlanta, Georgia 30332, United States
| | - Ryan P. Lively
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive NW, Atlanta, Georgia 30332, United States
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Pimentel BR, Parulkar A, Zhou EK, Brunelli NA, Lively RP. Zeolitic imidazolate frameworks: next-generation materials for energy-efficient gas separations. ChemSusChem 2014; 7:3202-3240. [PMID: 25363474 DOI: 10.1002/cssc.201402647] [Citation(s) in RCA: 135] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Revised: 08/28/2014] [Indexed: 06/04/2023]
Abstract
Industrial separation processes comprise approximately 10% of the global energy demand, driven largely by the utilization of thermal separation methods (e.g., distillation). Significant energy and cost savings can be realized using advanced separation techniques such as membranes and sorbents. One of the major barriers to acceptance of these techniques remains creating materials that are efficient and productive in the presence of aggressive industrial feeds. One promising class of emerging materials is zeolitic imidazolate frameworks (ZIFs), an important thermally and chemically stable subclass of metal organic frameworks (MOFs). The objectives of this paper are (i) to provide a current understanding of the synthetic methods that enable the immense tunability of ZIFs, (ii) to identify areas of success and areas for improvement when ZIFs are used as adsorbents, (iii) to identify areas of success and areas for improvement in ZIF membranes. A review is given of the state-of-the-art in ZIF synthesis procedures and novel ZIF formation pathways as well as their application in energy efficient separations.
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Affiliation(s)
- Brian R Pimentel
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr. NW, Atlanta, GA 30332 (USA)
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Neumann GT, Pimentel BR, Rensel DJ, Hicks JC. Correlating lignin structure to aromatic products in the catalytic fast pyrolysis of lignin model compounds containing β–O–4 linkages. Catal Sci Technol 2014. [DOI: 10.1039/c4cy00569d] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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