1
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Robinson JW, Roberts WW, Matzger AJ. Kidney stone growth through the lens of Raman mapping. Sci Rep 2024; 14:10834. [PMID: 38734821 PMCID: PMC11088632 DOI: 10.1038/s41598-024-61652-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Accepted: 05/08/2024] [Indexed: 05/13/2024] Open
Abstract
Bulk composition of kidney stones, often analyzed with infrared spectroscopy, plays an essential role in determining the course of treatment for kidney stone disease. Though bulk analysis of kidney stones can hint at the general causes of stone formation, it is necessary to understand kidney stone microstructure to further advance potential treatments that rely on in vivo dissolution of stones rather than surgery. The utility of Raman microscopy is demonstrated for the purpose of studying kidney stone microstructure with chemical maps at ≤ 1 µm scales collected for calcium oxalate, calcium phosphate, uric acid, and struvite stones. Observed microstructures are discussed with respect to kidney stone growth and dissolution with emphasis placed on < 5 µm features that would be difficult to identify using alternative techniques including micro computed tomography. These features include thin concentric rings of calcium oxalate monohydrate within uric acid stones and increased frequency of calcium oxalate crystals within regions of elongated crystal growth in a brushite stone. We relate these observations to potential concerns of clinical significance including dissolution of uric acid by raising urine pH and the higher rates of brushite stone recurrence compared to other non-infectious kidney stones.
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Affiliation(s)
- John W Robinson
- Department of Chemistry, University of Michigan, Ann Arbor, MI, 48109, USA
| | - William W Roberts
- Division of Endourology, Department of Urology, University of Michigan, Ann Arbor, MI, 48109, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Adam J Matzger
- Department of Chemistry, University of Michigan, Ann Arbor, MI, 48109, USA.
- Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, MI, 48109, USA.
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2
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Nath K, Wright KR, Ahmed A, Siegel DJ, Matzger AJ. Adsorption of Natural Gas in Metal-Organic Frameworks: Selectivity, Cyclability, and Comparison to Methane Adsorption. J Am Chem Soc 2024; 146:10517-10523. [PMID: 38569048 DOI: 10.1021/jacs.3c14535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
Evaluation of metal-organic frameworks (MOFs) for adsorbed natural gas (ANG) technology employs pure methane as a surrogate for natural gas (NG). This approximation is problematic, as it ignores the impact of other heavier hydrocarbons present in NG, such as ethane and propane, which generally have more favorable adsorption interactions with MOFs compared to methane. Herein, using quantitative Raman spectroscopic analysis and Monte Carlo calculations, we demonstrate the adsorption selectivity of high-performing MOFs, such as MOF-5, MOF-177, and SNU-70, for a methane and ethane mixture (95:5) that mimics the composition of NG. The impact of selectivity on the storage and deliverable capacities of these adsorbents during successive cycles of adsorption and desorption, simulating the filling and emptying of an ANG tank, is also demonstrated. The study reveals a gradual reduction in the storage performance of MOFs, particularly with smaller pore volumes, due to ethane accumulation over long-term cycling, until a steady state is reached with substantially degraded storage performance.
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Affiliation(s)
- Karabi Nath
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Keenan R Wright
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Alauddin Ahmed
- Mechanical Engineering Department, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Donald J Siegel
- Walker Department of Mechanical Engineering, Texas Materials Institute, and Oden Institute for Computational Engineering and Sciences, University of Texas at Austin, 204 East Dean Keeton Street, ETC II 5.160, Austin, Texas 78712-1591, United States
| | - Adam J Matzger
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
- Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, Michigan 48109, United States
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3
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Nicolau ST, Matzger AJ. Sensitizing Explosives Through Molecular Doping. Chempluschem 2024:e202300724. [PMID: 38437508 DOI: 10.1002/cplu.202300724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 02/28/2024] [Accepted: 03/04/2024] [Indexed: 03/06/2024]
Abstract
Cocrystallization assembles multicomponent crystals in defined ratios that are held together by intermolecular interactions. While cocrystals have seen extensive use in the pharmaceutical industry for solving issues with stability and solubility, extension to the field of energetic materials for improved properties has proven difficult. Predicting successful coformers remains a challenge for systems lacking well-understood synthons that promote reliable intermolecular assembly. Herein, an alternative method is investigated for altering energetic properties that operates in the absence of well-defined interactions by molecular doping. An impact sensitive primary explosive, cyanuric triazide (CTA), was selected as the dopant to test if less impact sensitive secondary explosives could gain increased sensitization to impact when CTA is inserted into their crystal lattices. Molecular doping was successful in sensitizing three melt-castable energetics: 2,4,6-trinitrotoluene (TNT), 2,4-dinitroanisole (DNAN), and 1,3,3-trinitroazetidine (TNAZ). CTA could also be incorporated as a stabilized inclusion to sensitize DNAN further. These results demonstrate how the judicious choice of dopant can lead to specific property improvements, providing a method for creating energetic materials with new properties to access metal-free primary explosives and physical hot spot models for explosive ignition.
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Affiliation(s)
- Shelby T Nicolau
- Department of Chemistry, University of Michigan, 930 North University Ave, 48109, Ann Arbor, MI, USA
| | - Adam J Matzger
- Department of Chemistry, University of Michigan, 930 North University Ave, 48109, Ann Arbor, MI, USA
- Macromolecular Science and Engineering Program, University of Michigan, 48109, Ann Arbor, MI, USA
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4
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Bennett AJ, Foroughi LM, Matzger AJ. Perchlorate-Free Energetic Oxidizers Enabled by Ionic Cocrystallization. J Am Chem Soc 2024; 146:1771-1775. [PMID: 38181408 DOI: 10.1021/jacs.3c12023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2024]
Abstract
The search for a suitable replacement for the ubiquitous oxidizer ammonium perchlorate (AP) is a top priority to enable more sustainable solid rocket motors. The oxidizing salts ammonium nitrate (AN) and ammonium dinitramide (ADN) are regarded as potential green replacements for AP, but suffer from a plethora of handling and processing issues including poor stability and a needle-like crystal morphology which inhibits dense packing; these prevent their widespread use. In the present work, ionic cocrystallization is leveraged to produce the first cocrystals of these oxidizing salts with an energetic coformer and the first such cocrystals to maintain a positive oxygen balance. The azole-based energetic molecule 5,5'-dinitro-2H,2H'-3,3″-bi-1,2,4-triazole (DNBT) is successfully cocrystallized with AN to yield the cocrystal 2AN:DNBT. Differential scanning calorimetry data confirms that AN, which in its pure form suffers from a problematic solid-state phase transition, is stabilized in the cocrystal. Application of this cocrystallization strategy to ADN produces 2ADN:DNBT, which has the highest oxygen balance of any organic cocrystal.
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Affiliation(s)
- Andrew J Bennett
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Leila M Foroughi
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Adam J Matzger
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
- Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, Michigan 48109, United States
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5
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Robinson JW, Marom R, Ghani KR, Roberts WW, Matzger AJ. Performance of brushite plaster as kidney stone phantoms for laser lithotripsy. Urolithiasis 2023; 52:10. [PMID: 38060010 DOI: 10.1007/s00240-023-01505-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 11/04/2023] [Indexed: 12/08/2023]
Abstract
Artificial phantoms used in photothermal near-infrared laser lithotripsy research generally fail to mimic both the chemical and the physical properties of human stones. Though high-energy, 1 J pulses are capable of fracturing hard human stones into several large fragments along natural boundaries, similar behavior has not been observed in commonly used gypsum plasters like BegoStone. We developed a new brushite-based plaster formulation composed of ≈90% brushite that undergoes rapid fracture in the manner of human stones under fragmentation pulse regimes. Single-pulse (1 J) ablation crater volumes for phantoms were not significantly different from those of pure brushite stones. Control over crater volumes was demonstrated by varying phosphorous acid concentration in the plaster formulation. Fragmentation of cylindrical brushite phantoms was filmed using a high-speed camera which demonstrated rapid fragmentation in < 100 µs during the bubble expansion phase of a short pulse from a high-powered Ho:YAG laser (Lumenis Pulse 120 H). The rapid nature of observed fracture suggests increasing laser pulse energy by increasing laser pulse duration will not improve fragmentation performance of laser lithotripters. Brushite plaster phantoms are a superior alternative to gypsum plasters for laser lithotripsy research due to their better mimicry of stone composition, controllable single-pulse crater volumes, and fragmentation behavior.
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Affiliation(s)
- John W Robinson
- Department of Chemistry, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Ron Marom
- Division of Endourology, Department of Urology, University of Michigan, Ann Arbor, MI, 48109, USA
- Department of Urology, Tel Aviv Medical Center, Tel Aviv, Israel
| | - Khurshid R Ghani
- Division of Endourology, Department of Urology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - William W Roberts
- Division of Endourology, Department of Urology, University of Michigan, Ann Arbor, MI, 48109, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Adam J Matzger
- Department of Chemistry, University of Michigan, Ann Arbor, MI, 48109, USA.
- Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, MI, 48109, USA.
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6
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Woo H, Devlin AM, Matzger AJ. In Situ Observation of Solvent Exchange Kinetics in a MOF with Coordinatively Unsaturated Sites. J Am Chem Soc 2023; 145:18634-18641. [PMID: 37552873 DOI: 10.1021/jacs.3c06396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2023]
Abstract
Solvent exchange of synthesis solvent within metal-organic frameworks (MOFs) is an essential process for the activation of coordinatively unsaturated sites (CUS) to achieve an optimal surface area; activation of the CUS is required to exploit the versatile applications of MOFs. However, it is challenging to replace CUS-bound synthesis solvent prior to MOF activation, which can lead to a structural collapse and reduced surface area post-evacuation. Herein, we quantify the exchange behavior of a copper paddlewheel-based CUS-MOF (HKUST-1) in the presence of three different solvents: ethanol (EtOH), dichloromethane (DCM), and N,N-dimethylformamide (DMF). The DMF release profiles are monitored via in situ observation of the exchange solvent composition via 1H NMR and Raman spectroscopy at the macroscopic scale. Furthermore, the change in solvent within a single crystal is measured to directly elucidate the exchange behavior. We demonstrate the DMF release profile from HKUST-1 exhibits different rate laws depending on whether the solvent exchange occurs at the CUS or is purely diffusive through the pores. This contribution represents the first characterization of release from a CUS-MOF as a function exchange solvent and reveals that solvent exchange in a CUS-MOF is not diffusion-limited, but rather is limited by the solvent exchange kinetics at the metal center. Insights from this study can be generalized to the variety of copper-paddlewheel-based MOFs, informing best practices for solvent exchange.
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Affiliation(s)
- Hochul Woo
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
- Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Angela M Devlin
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Adam J Matzger
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
- Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
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7
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Kelsall KN, Foroughi LM, Frank DS, Schenck L, LaBuda A, Matzger AJ. Structural Modifications of Polyethylenimine to Control Drug Loading and Release Characteristics of Amorphous Solid Dispersions. Mol Pharm 2023; 20:1779-1787. [PMID: 36719910 DOI: 10.1021/acs.molpharmaceut.2c00970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 02/01/2023]
Abstract
Crystalline drugs with low solubility have the potential to benefit from delivery in the amorphous form. The polymers used in amorphous solid dispersions (ASDs) influence their maximum drug loading, solubility, dissolution rate, and physical stability. Herein, the influence of hydrophobicity of crosslinked polyethylenimine (PEI) is investigated for the delivery of the BCS class II nonsteroidal anti-inflammatory drug flufenamic acid (ffa). Several synthetic variables for crosslinking PEI with terephthaloyl chloride were manipulated: solvent, crosslinking density, reactant concentration, solution viscosity, reaction temperature, and molecular weight of the hyperbranched polymer. Benzoyl chloride was employed to cap amine groups to increase the hydrophobicity of the crosslinked materials. Amorphous deprotonated ffa was present in all ASDs; however, the increased hydrophobicity and reduced basicity from benzoyl functionalization led to a combination of amorphous deprotonated ffa and amorphous neutral ffa in the materials at high drug loadings (50 and 60 wt %). All ASDs demonstrated enhanced drug delivery in acidic media compared to crystalline ffa. Physical stability testing showed no evidence of crystallization after 29 weeks under various relative humidity conditions. These findings motivate the broadening of polymer classes employed in ASD formation to include polymers with very high functional group concentrations to enable loadings not readily achieved with existing polymers.
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Affiliation(s)
- Kristen N Kelsall
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States.,Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Leila M Foroughi
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Derek S Frank
- Particle Engineering Lab, Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Luke Schenck
- Particle Engineering Lab, Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Anthony LaBuda
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Adam J Matzger
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States.,Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, Michigan 48109, United States
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8
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Bennett AJ, Matzger AJ. Progress in Predicting Ionic Cocrystal Formation: the Case of Ammonium Nitrate. Chemistry 2023; 29:e202300076. [PMID: 36812052 DOI: 10.1002/chem.202300076] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/16/2023] [Accepted: 02/22/2023] [Indexed: 02/24/2023]
Abstract
In contrast to the mature predictive frameworks applied to neutral cocrystals, ionic cocrystals, those including an ion pair, are difficult to design. Furthermore, they are generally excluded categorically from studies which correlate specific molecular properties to cocrystal formation, leaving the prospective ionic cocrystal engineer with few clear avenues to success. Herein ammonium nitrate, an energetic oxidizing salt, is targeted for cocrystallization in a potential coformer group selected based on likely interactions with the nitrate ion as revealed in the Cambridge Structural Database; six novel ionic cocrystals were discovered. Molecular descriptors previously identified as being related to neutral cocrystal formation were examined across the screening group but showed no relationship with ionic cocrystal formation. High packing coefficient is shown to be a constant among the successful coformers in the set and is utilized to directly target two more successful coformers, bypassing the need for a large screening group.
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Affiliation(s)
- Andrew J Bennett
- University of Michigan, Chemistry, 930 North University Ave, 48109, Ann Arbor, UNITED STATES
| | - Adam J Matzger
- University of Michigan, Chemistry, 930 N. University Ave., 48109, Ann Arbor, UNITED STATES
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9
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Wright KR, Nath K, Matzger AJ. Superior Metal-Organic Framework Activation with Dimethyl Ether. Angew Chem Int Ed Engl 2022; 61:e202213190. [PMID: 36321939 PMCID: PMC10099587 DOI: 10.1002/anie.202213190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Indexed: 11/06/2022]
Abstract
Metal-organic frameworks (MOFs) are demonstrated to be readily activated by treatment with the low surface tension, low boiling point solvent dimethyl ether (DME). The mildness of the method enables access to high surface areas by avoiding structural changes in the framework that often plague thermal activation methods. A distinction from previous methods is that DME activation succeeds for materials with coordinatively unsaturated sites (CUS) and non-CUS MOFs as well. DME displaces solvent molecules occupying the pores of the MOF as well as those coordinated to metal centers; reducing evacuation temperature by using a coordinating, yet highly volatile guest enables low temperature activation with structural retention as demonstrated surface area measurements that match or exceed existing activation protocols.
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Affiliation(s)
- Keenan R Wright
- Department of Chemistry, Institution University of Michigan, 930 North University Avenue, Ann Arbor, MI 48109-1055, USA
| | - Karabi Nath
- Department of Chemistry, Institution University of Michigan, 930 North University Avenue, Ann Arbor, MI 48109-1055, USA
| | - Adam J Matzger
- Department of Chemistry and Macromolecular Science and Engineering Program, University of Michigan, 930 North University Avenue, Ann Arbor, MI 48109-1055, USA.,Department of Chemistry, Institution University of Michigan, 930 North University Avenue, Ann Arbor, MI 48109-1055, USA
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10
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Dau JJ, Hall TL, Matzger AJ, Louters MM, Khajeh NR, Ghani KR, Roberts WW. Laser Heating of Fluid With and Without Stone Ablation: In Vitro Assessment. J Endourol 2022; 36:1607-1612. [PMID: 35904398 DOI: 10.1089/end.2022.0199] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 12/15/2022] Open
Abstract
Introduction: Laser lithotripsy can cause excessive heating of fluid within the collecting system and lead to tissue damage. To better understand this effect, it is important to determine the percentage of applied laser energy that is converted to heat and the percentage used for stone ablation. Our objective was to calculate the percentage of laser energy used for stone ablation based on the difference in fluid temperature measured in an in vitro model when the laser was activated without and with stone ablation. Methods: Flat BegoStone disks (15:5) were submerged in 10 mL of deionized water at the bottom of a vacuum evacuated double-walled glass Dewar. A Moses 200 D/F/L laser fiber was positioned above the surface of the stone at a distance of 3.5 mm for control (no stone ablation) or 0.5 mm for experimental (ablation) trials. The laser was activated and scanned at 3 mm/second across the stone in a preprogrammed pattern for 30 seconds at 2.5 W (0.5 J × 5 Hz) for both short-pulse (SP) and Moses distance (MD) modes. Temperature of the fluid was recorded using two thermocouples once per second. Results: Control trials produced no stone ablation, while experimental trials produced a staccato groove in the stone surface, simulating efficient lithotripsy. The mean temperature increase for SP was 1.08°C ± 0.04°C for control trials and 0.98°C ± 0.03°C for experimental trials, yielding a mean temperature difference of 0.10°C ± 0.06°C (p = 0.0005). With MD, the mean temperature increase for control trials was 1.03°C ± 0.01°C and for experimental trials 0.99°C ± 0.06°C, yielding a smaller mean temperature difference of 0.04°C ± 0.06°C (p = 0.09). Conclusions: Even under conditions of energy-efficient stone ablation, the majority of applied laser energy (91%-96%) was converted to heat.
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Affiliation(s)
- Julie J Dau
- Department of Urology, University of Michigan, Ann Arbor, Michigan, USA
| | - Timothy L Hall
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA
| | - Adam J Matzger
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan, USA
| | - Marne M Louters
- Department of Urology, University of Michigan, Ann Arbor, Michigan, USA
| | - Nikta R Khajeh
- Department of Urology, University of Michigan, Ann Arbor, Michigan, USA
| | - Khurshid R Ghani
- Department of Urology, University of Michigan, Ann Arbor, Michigan, USA
| | - William W Roberts
- Department of Urology, University of Michigan, Ann Arbor, Michigan, USA.,Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA
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11
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Wright KR, Nath K, Matzger AJ. Superior Metal‐Organic Framework Activation with Dimethyl Ether. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202213190] [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: 11/25/2022]
Affiliation(s)
- Keenan R. Wright
- Department of Chemistry Institution University of Michigan 930 North University Avenue Ann Arbor MI 48109-1055 USA
| | - Karabi Nath
- Department of Chemistry Institution University of Michigan 930 North University Avenue Ann Arbor MI 48109-1055 USA
| | - Adam J. Matzger
- Department of Chemistry and Macromolecular Science and Engineering Program University of Michigan 930 North University Avenue Ann Arbor MI 48109-1055 USA
- Department of Chemistry Institution University of Michigan 930 North University Avenue Ann Arbor MI 48109-1055 USA
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12
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Nath K, Ahmed A, Siegel DJ, Matzger AJ. Microscale Determination of Binary Gas Adsorption Isotherms in MOFs. J Am Chem Soc 2022; 144:20939-20946. [DOI: 10.1021/jacs.2c09818] [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: 11/06/2022]
Affiliation(s)
- Karabi Nath
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan48109, United States
| | - Alauddin Ahmed
- Mechanical Engineering Department, University of Michigan, Ann Arbor, Michigan48109, United States
| | - Donald J. Siegel
- Mechanical Engineering Department, University of Michigan, Ann Arbor, Michigan48109, United States
- Materials Science & Engineering, University of Michigan, Ann Arbor, Michigan48109, United States
- Applied Physics Program, University of Michigan, Ann Arbor, Michigan48109, United States
| | - Adam J. Matzger
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan48109, United States
- Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, Michigan48109-1055, United States
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13
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Bellas MK, Matzger AJ. Discovery strategy leads to the first melt-castable cocrystal based on an energetic oxidizing salt. Chem Sci 2022; 13:12100-12106. [PMID: 36349100 PMCID: PMC9600225 DOI: 10.1039/d2sc03015b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 09/29/2022] [Indexed: 02/13/2024] Open
Abstract
Cocrystallization is a synthetic method employed across fields to improve functional materials while preserving properties inherent to the molecules/ions involved. However, there is no guarantee that cocrystals will demonstrate improved properties relative to the constituent materials. Oxygen balance, which is closely correlated to the performance of energetic materials, is an exception in that this attribute may be targetted with certainty. The combination of energetic oxidizing salts with small molecules presents a seemingly straightforward path to energetic materials with desirable performance properties. Unfortunately no general approach for the cocrystallization of salts and small molecules (salt cocrystallization) has yet emerged. Presented here is such an approach, focussing on ammonium salts, and applied to the energetic oxidizing salt ammonium dinitramide to achieve a melt-castable energetic material. Though focused on ammonium salts, this salt cocrystallization paradigm is a general approach that may be extended to other ions.
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Affiliation(s)
- Michael K Bellas
- Research Department, Chemistry Division, United States Navy - Naval Air Systems Command (NAVAIR), Naval Air Warfare Center, Weapons Division (NAWCWD) 1900 N. Knox Road, China Lake California 93555 USA
- Department of Chemistry, University of Michigan 930 North University Avenue Ann Arbor Michigan 48109-1055 USA
| | - Adam J Matzger
- Department of Chemistry, University of Michigan 930 North University Avenue Ann Arbor Michigan 48109-1055 USA
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14
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Abstract
In spite of their exceptional performance, energetic peroxosolvates are rare. Research in this area is slowed by the poor availibility of concentrated hydrogen peroxide solutions. Presented here is an efficient peroxosolvate discovery method that is applied in the discovery of the first ternary cocrystal comprising only energetic components.
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Affiliation(s)
- Michael K Bellas
- Department of Chemistry, University of Michigan, 930 N. University Ave., Ann Arbor, MI 48109-1055, USA.
| | - Adam J Matzger
- Department of Chemistry, University of Michigan, 930 N. University Ave., Ann Arbor, MI 48109-1055, USA.
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15
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Nath K, Ahmed A, Siegel DJ, Matzger AJ. Computational Identification and Experimental Demonstration of High‐Performance Methane Sorbents. Angew Chem Int Ed Engl 2022; 61:e202203575. [PMID: 35478372 PMCID: PMC9322563 DOI: 10.1002/anie.202203575] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Indexed: 01/27/2023]
Abstract
Remarkable methane uptake is demonstrated experimentally in three metal‐organic frameworks (MOFs) identified by computational screening: UTSA‐76, UMCM‐152 and DUT‐23‐Cu. These MOFs outperform the benchmark sorbent, HKUST‐1, both volumetrically and gravimetrically, under a pressure swing of 80 to 5 bar at 298 K. Although high uptake at elevated pressure is critical for achieving this performance, a low density of high‐affinity sites (coordinatively unsaturated metal centers) also contributes to a more complete release of stored gas at low pressure. The identification of these MOFs facilitates the efficient storage of natural gas via adsorption and provides further evidence of the utility of computational screening in identifying overlooked sorbents.
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Affiliation(s)
- Karabi Nath
- Department of Chemistry and Macromolecular Science and Engineering Program University of Michigan 930 North University Avenue Ann Arbor MI 48109 USA
| | - Alauddin Ahmed
- Mechanical Engineering Department University of Michigan Ann Arbor MI 48109 USA
- Materials Science and Engineering Applied Physics Program, and University of Michigan Energy Institute University of Michigan Ann Arbor MI 48109 USA
| | - Donald J. Siegel
- Mechanical Engineering Department University of Michigan Ann Arbor MI 48109 USA
- Materials Science and Engineering Applied Physics Program, and University of Michigan Energy Institute University of Michigan Ann Arbor MI 48109 USA
- Current address: Walker Department of Mechanical Engineering Texas Materials Institute and Oden Institute for Computational Engineering and Sciences University of Texas at Austin 204 E. Dean Keeton Street, ETC II 5.160 Austin TX 78712-1591 USA
| | - Adam J. Matzger
- Department of Chemistry and Macromolecular Science and Engineering Program University of Michigan 930 North University Avenue Ann Arbor MI 48109 USA
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16
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Wiscons RA, Nikhar R, Szalewicz K, Matzger AJ. Factors influencing hydrogen peroxide versus water inclusion in molecular crystals. Phys Chem Chem Phys 2022; 24:11206-11212. [PMID: 35481469 DOI: 10.1039/d1cp05765k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrate formation is often unavoidable during crystallization, leading to performance degradation of pharmaceuticals and energetics. In some cases, water molecules trapped within crystal lattices can be substituted for hydrogen peroxide, improving the solubility of drugs and detonation performance of explosives. The present work compares hydrates and hydrogen peroxide solvates in two ways: (1) analyzing structural motifs present in crystal structures accessed from the Cambridge Structural Database and (2) developing potential energy surfaces for water and hydrogen peroxide interacting with functional groups of interest at geometries relevant to the solid state. By elucidating fundamental differences in local interactions that can be formed with molecules of hydrogen peroxide and/or water, the analyses presented here provide a foundation for the design and selection of candidate molecules for the formation of hydrogen peroxide solvates.
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Affiliation(s)
- Ren A Wiscons
- Department of Chemistry and the Macromolecular Science and Engineering Program, University of Michigan, 930 North University of Ave, Ann Arbor, Michigan 48109-1055, USA.
| | - Rahul Nikhar
- Department of Physics and Astronomy, University of Delaware, Newark, Delaware, 19716, USA. szalewic.@udel.edu
| | - Krzysztof Szalewicz
- Department of Physics and Astronomy, University of Delaware, Newark, Delaware, 19716, USA. szalewic.@udel.edu
| | - Adam J Matzger
- Department of Chemistry and the Macromolecular Science and Engineering Program, University of Michigan, 930 North University of Ave, Ann Arbor, Michigan 48109-1055, USA.
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17
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Shalini S, Matzger AJ. Ethylene oxide functionalization enhances the ionic conductivity of a MOF. Chem Commun (Camb) 2022; 58:5355-5358. [PMID: 35363242 DOI: 10.1039/d2cc01286c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Varying the degree of ethylene oxide (EO) functionalization of the zirconium MOF UiO-68 affords two novel MOFs; UiO-68-EO and UiO-68-2EO exhibit solvent-free ionic conductivity upon loading LiTFSI in their pores. Incorporating EO chains provides a pathway for lithium ion migration between the coordinated sites and results in an ionic conductivity of 3.8 × 10-7 S cm-1 and 3.9 × 10-4 S cm-1 at 90 °C for UiO-68-EO/LiTFSI and UiO-68-2EO/LiTFSI respectively.
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Affiliation(s)
- Sorout Shalini
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, MI 48109, USA.
| | - Adam J Matzger
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, MI 48109, USA. .,Department of Macromolecular Science and Engineering, University of Michigan, Ann Arbor, MI 48019, USA
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18
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Nath K, Ahmed A, Siegel DJ, Matzger AJ. Computational Identification and Experimental Demonstration of High‐Performance Methane Sorbents. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203575] [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: 11/09/2022]
Affiliation(s)
- Karabi Nath
- Department of Chemistry and Macromolecular Science and Engineering Program University of Michigan 930 North University Avenue Ann Arbor MI 48109 USA
| | - Alauddin Ahmed
- Mechanical Engineering Department University of Michigan Ann Arbor MI 48109 USA
- Materials Science and Engineering Applied Physics Program, and University of Michigan Energy Institute University of Michigan Ann Arbor MI 48109 USA
| | - Donald J. Siegel
- Mechanical Engineering Department University of Michigan Ann Arbor MI 48109 USA
- Materials Science and Engineering Applied Physics Program, and University of Michigan Energy Institute University of Michigan Ann Arbor MI 48109 USA
- Current address: Walker Department of Mechanical Engineering Texas Materials Institute and Oden Institute for Computational Engineering and Sciences University of Texas at Austin 204 E. Dean Keeton Street, ETC II 5.160 Austin TX 78712-1591 USA
| | - Adam J. Matzger
- Department of Chemistry and Macromolecular Science and Engineering Program University of Michigan 930 North University Avenue Ann Arbor MI 48109 USA
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19
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Abstract
Exerting morphological control over metal-organic frameworks (MOFs) is critical for determining their catalytic performance and to optimize their packing behavior in areas from separations to fuel gas storage. A mechanism-based approach to tailor the morphology of MOFs is introduced and experimentally demonstrated for five cubic Zn4 O-based MOFs. This methodology provides three key features: 1) computational screening for selection of appropriate additives to change crystal morphology based on knowledge of the crystal structure alone; 2) use of additive to metal cluster geometric relationships to achieve morphologies expressing desired crystallographic facets; 3) potential for suppression of interpenetration for certain phases.
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Affiliation(s)
- Kuthuru Suresh
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, MI, 48109-1055, United States
| | - Andre P Kalenak
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, MI, 48109-1055, United States
| | - Ania Sotuyo
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, MI, 48109-1055, United States
| | - Adam J Matzger
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, MI, 48109-1055, United States.,Macromolecular Science and Engineering Program, University of Michigan, 930 North University Avenue, Ann Arbor, MI, 48109-1055, United States
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20
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Abstract
The synthesis of MOF-74 (MOF = metal-organic framework) proceeds first through the generation of chemically and topologically distinct materials, referred to as phases, displaying exclusively carboxylate coordination, followed by further deprotonation to enable oxo coordination and MOF-74 formation. The synthesis of Mg-MOF-74 at high concentrations of linker and metal enables the stabilization and characterization of the previously unobserved, exclusively carboxylate coordinating phases. Ex situ and in situ approaches are leveraged to provide the time-resolved observation of Mg-MOF-74 synthesis and the formation of phases that precede Mg-MOF-74 formation as well as metastable phase dissolution. These data support dissolution and redeposition as the mechanism of MOF-74 formation and provide insight into the formation mechanism of MOFs with multiple linker coordination types.
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21
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Abstract
Halogen-bonded complexes are often designed by consideration of electrostatic potential (ESP) predictions. ESP predictions do not capture the myriad variables associated with halogen bond (XB) donors and acceptors; thus, binding interaction cannot be quantitatively predicted. Here, a discrepancy between predictions based on ESP energy difference (ΔVs ) and computed gas phase binding energy (ΔEbind ) motivated the experimental determination of the relative strength of halogen bonding interactions in solution by Raman spectroscopic observation of complexes formed from interacting five iodobenzene-derived XB donors and four pyridine XB acceptors. Evaluation of ΔEbind coupled with absolutely-localized molecular orbital energy decomposition analysis (ALMO-EDA) deconvolutes halogen bonding energy contributions and reveals a prominent role for charge transfer (CT) interactions. Raman spectra reveal ΔEbind accurately predicts stronger interactions within iodopentafluorobenzene (IPFB) complexes than with 1-iodo-3,5-dinitrobenzene (IDNB) complexes even though IPFB has similar electrostatics to IDNB and contains a smaller σ-hole.
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Affiliation(s)
- Taylor A Bramlett
- Department of Chemistry, University of Michigan, 930 North University Ave, Ann Arbor, MI, 48109, USA
| | - Adam J Matzger
- Department of Chemistry, University of Michigan, 930 North University Ave, Ann Arbor, MI, 48109, USA.,Macromolecular Science and Engineering Program, Department of Chemistry, University of Michigan, 930 North University Ave, Ann Arbor, MI, 48109, USA
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22
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Suresh K, Aulakh D, Purewal J, Siegel DJ, Veenstra M, Matzger AJ. Optimizing Hydrogen Storage in MOFs through Engineering of Crystal Morphology and Control of Crystal Size. J Am Chem Soc 2021; 143:10727-10734. [PMID: 34242007 DOI: 10.1021/jacs.1c04926] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Metal-organic frameworks (MOFs) are promising materials for hydrogen storage that fail to achieve expected theoretical values of volumetric storage density due to poor powder packing. A strategy that improves packing efficiency and volumetric hydrogen gas storage density dramatically through engineered morphologies and controlled-crystal size distributions is presented that holds promise for maximizing storage capacity for a given MOF. The packing density improvement, demonstrated for the benchmark sorbent MOF-5, leads to a significant enhancement of volumetric hydrogen storage performance relative to commercial MOF-5. System model projections demonstrate that engineering of crystal morphology/size or use of a bimodal distribution of cubic crystal sizes in tandem with system optimization can surpass the 25 g/L volumetric capacity of a typical 700 bar compressed storage system and exceed the DOE targets 2020 volumetric capacity (30 g/L). Finally, a critical link between improved powder packing density and reduced damage upon compaction is revealed leading to sorbents with both high surface area and high density.
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Affiliation(s)
- Kuthuru Suresh
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Darpandeep Aulakh
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Justin Purewal
- Ford Motor Company, Research and Advanced Engineering, 1201 Village Rd., Dearborn, Michigan 48121, United States
| | - Donald J Siegel
- Mechanical Engineering Department, University of Michigan, Ann Arbor, Michigan 48109, United States.,Materials Science & Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States.,Applied Physics Program, University of Michigan, Ann Arbor, Michigan 48109, United States.,University of Michigan Energy Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Mike Veenstra
- Ford Motor Company, Research and Advanced Engineering, 1201 Village Rd., Dearborn, Michigan 48121, United States
| | - Adam J Matzger
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States.,Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, Michigan 48109, United States
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23
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Abstract
In spite of the importance of energetic materials to a broad range of military (munitions, missiles) and civilian (mining, space exploration) technologies, the introduction of new chemical entities in the field occurs at a very slow pace. This situation is understandable considering the stringent requirements for cost and safety that must be met for new chemical entities to be fielded. If existing manufacturing infrastructure could be leveraged, then this would offer a fundamental shift in the discovery paradigm. Cocrystallization is an approach poised to realize this goal because it can use existing materials and make new chemical compositions through the assembly of multiple unique components in the solid state. This account describes early proof-of-principle studies with widely used energetics in the field, including 2,4,6-trinitrotoluene (TNT) and octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX), forming cocrystals with nonenergetic coformers that alter key properties such as density, sensitivity, and morphology. The evolution of these studies to produce cocrystals between two energetic components is detailed, including those exploiting new intermolecular interaction motifs that drive assembly such as halogen bonding. Implications of cocrystallization for performance, sensitivity to external stimuli, and manufacturability are explored at each stage. The derivation of many of these cocrystals from energetic materials in common use satisfies the goal of using materials already demonstrated to be cost-effective at scale and with well-understood safety profiles. The account concludes with a discussion of cocrystallizing molecules having excess of oxidizing power with those that are oxygen-deficient to push the limits of explosive performance to unprecedented levels. The purposeful production of an arbitrary combination of two solid components into a cocrystal is far from certain, but the studies described motivate the continued exploration of novel materials and the development of predictive models for identifying crystallization partners. When such cocrystals form, many of their most important properties cannot be predicted, pointing to another challenge for the purposeful development of energetic materials based on cocrystallization.
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Affiliation(s)
- Jonathan C. Bennion
- Department of Chemistry and the Macromolecular Science and Engineering Program, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
- U.S. Army Research Laboratory, FCDD-RLW-WB, Aberdeen Proving Ground, Maryland 21005, United States
| | - Adam J. Matzger
- Department of Chemistry and the Macromolecular Science and Engineering Program, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
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24
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Du Bois DR, Matzger AJ. Reagent Reactivity and Solvent Choice Determine Metal–Organic Framework Microstructure during Postsynthetic Modification. J Am Chem Soc 2020; 143:671-674. [DOI: 10.1021/jacs.0c12040] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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25
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Dodson RA, Kalenak AP, Matzger AJ. Solvent Choice in Metal-Organic Framework Linker Exchange Permits Microstructural Control. J Am Chem Soc 2020; 142:20806-20813. [PMID: 33237750 DOI: 10.1021/jacs.0c10224] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Linker exchange is a widely applied, robust technique for elaboration of metal-organic frameworks (MOFs) post-synthesis. The observation of core-shell microstructures under certain conditions was hypothesized to arise from diffusion rates into the MOF that are slower than linker exchange. Here the relative contributions of these processes are manipulated through solvent choice in order to modulate shell thickness and exchange extent. The findings allow tailoring MOF microstructure to application.
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26
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Song H, Vogt-Maranto L, Wiscons R, Matzger AJ, Tuckerman ME. Generating Cocrystal Polymorphs with Information Entropy Driven by Molecular Dynamics-Based Enhanced Sampling. J Phys Chem Lett 2020; 11:9751-9758. [PMID: 33141590 DOI: 10.1021/acs.jpclett.0c02647] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Predicting structures of organic molecular cocrystals is a challenging task when considering the immense number of possible intermolecular orientations. Use of the Shannon information entropy, constructed from an intermolecular orientational spatial distribution function, to drive a search for crystal structures via enhanced molecular dynamics can be an efficient way to map out a landscape of putative polymorphs. Here, the Shannon entropy is used to generate a set of collective variables for differentiating polymorphs of a 1:1 cocrystal of resorcinol and urea. We show that driven adiabatic free energy dynamics, a particular enhanced-sampling approach, combined with these entropy variables, can transform the stable phase into alternate polymorphs. Density functional theory calculations confirm that a structure obtained from the enhanced molecular dynamics is stable at pressures above 1 GPa. We thus show that enhanced sampling should be considered an integral component of crystal structure searching protocols for systems with multiple independent molecules.
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Affiliation(s)
- Hongxing Song
- Department of Chemistry, New York University, New York, New York 10003, United States
| | - Leslie Vogt-Maranto
- Department of Chemistry, New York University, New York, New York 10003, United States
| | - Ren Wiscons
- Department of Chemistry and Macromolecular Science and Engineering Program, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - Adam J Matzger
- Department of Chemistry and Macromolecular Science and Engineering Program, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - Mark E Tuckerman
- Department of Chemistry, New York University, New York, New York 10003, United States
- Courant Institute of Mathematical Sciences, New York University, New York, New York 10012, United States
- NYU-ECNU Center for Computational Chemistry at NYU Shanghai, 3663 Zhongshan Road North, Shanghai 200062, China
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27
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Abstract
Amorphous pharmaceuticals often suffer from poor physical stability, which can negate their high solubility, fast dissolution rate, and better oral bioavailability vs. crystalline forms. This represents a major hurdle to processing, storage, and delivery of amorphous pharmaceuticals. Several approaches to addressing these problems have been pursued, but there is still a need for a general method for stabilizing the amorphous form. We describe a novel approach using a water-unstable metal-organic framework as a drug delivery vehicle that demonstrates improved amorphous form stability accompanied by remarkably enhanced solubility and a fast dissolution rate. This research project spanned eleven years from conception to realization and dissemination. With origins in understanding the stability or porous solids for energy storage materials, the work also highlights potential of basic science understanding to illuminate new areas of application.
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Affiliation(s)
- Adam J. Matzger
- Department of Chemistry, University of Michigan
- Macromolecular Science and Engineering, University of Michigan
| | | | | | - Saikat Roy
- Department of Chemistry, University of Michigan
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28
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Dodson RA, Kalenak AP, Du Bois DR, Gill-Ljunghammer SL, Matzger AJ. N,N-Diethyl-3-methylbenzamide (DEET) acts as a metal-organic framework synthesis solvent with phase-directing capabilities. Chem Commun (Camb) 2020; 56:9966-9969. [PMID: 32720652 DOI: 10.1039/d0cc02741c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Metal-organic frameworks (MOFs) are generally synthesized in toxic formamide solvents. Greener solvents would lower production barriers and facilitate applications such as drug delivery. N,N-Diethyl-3-methylbenzamide (DEET), the most widely used insect repellent, is shown to serve this role. Furthermore, DEET-loaded MOFs can be leveraged in controlled-release insect repellent formulations.
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Affiliation(s)
- Ryan A Dodson
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, USA.
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29
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Shalini S, Frank DS, Aldoukhi AH, Majdalany SE, Roberts WW, Ghani KR, Matzger AJ. Assessing the Role of Light Absorption in Laser Lithotripsy by Isotopic Substitution of Kidney Stone Materials. ACS Biomater Sci Eng 2020; 6:5274-5280. [PMID: 33455276 DOI: 10.1021/acsbiomaterials.0c00790] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Understanding the chemical characteristics of kidney stones and how the stone composition affects their fragmentation is key to improving clinical laser lithotripsy. During laser lithotripsy, two mechanisms may be responsible for stone fragmentation: a photothermal mechanism and/or microexplosion mechanism. Herein, we carry out an isotopic substitution of crystal H2O with D2O in calcium oxalate monohydrate and struvite stones to alter their optical properties to study the relationship between the absorption of the stones, at the wavelength of the Ho:YAG (2.12 μm) laser, and the fragmentation behavior. Changing the absorption of the stones at 2.12 μm changes the extent of fragmentation, whereas changing the absorption of the bulk medium has a negligible effect on fragmentation, leading to the conclusion that kidney stone ablation is dominated by a photothermal mechanism.
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Affiliation(s)
- Sorout Shalini
- Department of Chemistry and the Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Derek S Frank
- Department of Chemistry and the Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Ali H Aldoukhi
- Division of Endourology, Department of Urology, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Sami E Majdalany
- Division of Endourology, Department of Urology, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - William W Roberts
- Division of Endourology, Department of Urology, University of Michigan, Ann Arbor, Michigan 48109, United States.,Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Khurshid R Ghani
- Division of Endourology, Department of Urology, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Adam J Matzger
- Department of Chemistry and the Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, Michigan 48109, United States
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30
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Shalini S, Vaid TP, Matzger AJ. Salt nanoconfinement in zirconium-based metal-organic frameworks leads to pore-size and loading-dependent ionic conductivity enhancement. Chem Commun (Camb) 2020; 56:7245-7248. [PMID: 32478367 DOI: 10.1039/d0cc03147j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The effect of nanoscale confinement of a salt on its ionic conductivity was studied for [NEt4][TFSI] melt-loaded in three isoreticular zirconium-based MOFs: UiO-66, UiO-67, and PCN-56. Conductivity of the MOF-salt composites was up to a factor of 50 higher than the pure salt, and maximized with slightly less than full loading of the MOFs.
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Affiliation(s)
- Sorout Shalini
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, MI 48109, USA.
| | - Thomas P Vaid
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, MI 48109, USA.
| | - Adam J Matzger
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, MI 48109, USA. and Department of Macromolecular Science and Engineering, University of Michigan, Ann Arbor, MI 48019, USA
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31
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Wiscons RA, Matzger AJ. Utilizing plane group symmetry to favor noncentrosymmetry in three-dimensional crystals. CAN J CHEM 2020. [DOI: 10.1139/cjc-2019-0402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Materials that lack inversion symmetry (noncentrosymmetric) demonstrate a diversity of desirable optical and electronic properties in bulk such as second harmonic generation, chiral emission, and piezo-, pyro-, and ferro-electricity. Unfortunately, it is challenging to reliably access noncentrosymmetric packing motifs because the closest packing of molecules is often achieved through inversion symmetry operators, leading to the relatively low occurrence of noncentrosymmetry in organic crystals. In this study, the occurrence of noncentrosymmetry in materials that adopt planar packing motifs is investigated because molecular species achieve closest packing in two dimensions through rotations and (or) glides, symmetry operators that do not individually lead to centrosymmetry. It is found that of the 18 crystal structures investigated here adopting planar packing motifs, 13 structures (72%) are noncentrosymmetric showing in-plane polarization. The 13 noncentrosymmetric crystal structures differ from the centrosymmetric structures by directional halogen bonding interactions or steric collisions that align the polarization directions of neighboring layers, leading to bulk structural polarity. The results from this investigation will be of use for designing noncentrosymmetric materials for application in optical and electronic devices.
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Affiliation(s)
- Ren A. Wiscons
- Department of Chemistry, Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, MI 48109-1055, USA
- Department of Chemistry, Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, MI 48109-1055, USA
| | - Adam J. Matzger
- Department of Chemistry, Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, MI 48109-1055, USA
- Department of Chemistry, Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, MI 48109-1055, USA
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32
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Foroughi LM, Wiscons RA, Du Bois DR, Matzger AJ. Improving stability of the metal-free primary energetic cyanuric triazide (CTA) through cocrystallization. Chem Commun (Camb) 2020; 56:2111-2114. [DOI: 10.1039/c9cc09465b] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cyanuric triazide and benzotrifuroxan (BTF) form a metal-free primary energetic cocrystal with suppressed volatility and improved thermal properties relative to CTA.
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Affiliation(s)
- Leila M. Foroughi
- Department of Chemistry
- Macromolecular Science and Engineering Program
- University of Michigan
- Ann Arbor
- USA
| | - Ren A. Wiscons
- Department of Chemistry
- Macromolecular Science and Engineering Program
- University of Michigan
- Ann Arbor
- USA
| | - Derek R. Du Bois
- Department of Chemistry
- Macromolecular Science and Engineering Program
- University of Michigan
- Ann Arbor
- USA
| | - Adam J. Matzger
- Department of Chemistry
- Macromolecular Science and Engineering Program
- University of Michigan
- Ann Arbor
- USA
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33
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Bellas MK, Matzger AJ. Achieving Balanced Energetics through Cocrystallization. Angew Chem Int Ed Engl 2019; 58:17185-17188. [DOI: 10.1002/anie.201908709] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 09/20/2019] [Indexed: 12/11/2022]
Affiliation(s)
- Michael K. Bellas
- Department of Chemistry University of Michigan 930 North University Avenue Ann Arbor MI 48109-1055 USA
| | - Adam J. Matzger
- Department of Chemistry University of Michigan 930 North University Avenue Ann Arbor MI 48109-1055 USA
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34
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Suresh K, Matzger AJ. Enhanced Drug Delivery by Dissolution of Amorphous Drug Encapsulated in a Water Unstable Metal-Organic Framework (MOF). Angew Chem Int Ed Engl 2019; 58:16790-16794. [PMID: 31550411 DOI: 10.1002/anie.201907652] [Citation(s) in RCA: 130] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Indexed: 12/18/2022]
Abstract
Encapsulating a drug molecule into a water-reactive metal-organic framework (MOF) leads to amorphous drug confined within the nanoscale pores. Rapid release of drug occurs upon hydrolytic decomposition of MOF in dissolution media. Application to improve dissolution and solubility for the hydrophobic small drug molecules curcumin, sulindac, and triamterene is demonstrated. The drug@MOF composites exhibit significantly enhanced dissolution and achieves high supersaturation in simulated gastric and/or phosphate buffer saline media. This combination strategy where MOF inhibits crystallization of the amorphous phase and then releases drug upon MOF irreversible structural collapse represents a novel and generalizable approach for drug delivery of poorly soluble compounds while overcoming the traditional weakness of amorphous drug delivery: physical instability of the amorphous form.
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Affiliation(s)
- Kuthuru Suresh
- Department of Chemistry and the Macromolecular Science and Engineering Program, University of Michigan, 930 North University Avenue, Ann Arbor, MI, 48109-1055, USA
| | - Adam J Matzger
- Department of Chemistry and the Macromolecular Science and Engineering Program, University of Michigan, 930 North University Avenue, Ann Arbor, MI, 48109-1055, USA
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35
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Suresh K, Matzger AJ. Enhanced Drug Delivery by Dissolution of Amorphous Drug Encapsulated in a Water Unstable Metal–Organic Framework (MOF). Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201907652] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Kuthuru Suresh
- Department of Chemistry and the Macromolecular Science and Engineering Program University of Michigan 930 North University Avenue Ann Arbor MI 48109-1055 USA
| | - Adam J. Matzger
- Department of Chemistry and the Macromolecular Science and Engineering Program University of Michigan 930 North University Avenue Ann Arbor MI 48109-1055 USA
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36
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Frank DS, Aldoukhi AH, Roberts WW, Ghani KR, Matzger AJ. Polymer-Mineral Composites Mimic Human Kidney Stones in Laser Lithotripsy Experiments. ACS Biomater Sci Eng 2019; 5:4970-4975. [PMID: 33455244 DOI: 10.1021/acsbiomaterials.9b01130] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 11/28/2022]
Abstract
Despite the widespread use of laser lithotripsy to fragment kidney stones in vivo, there is a lack of robust artificial stone models to replicate the behavior of human stones during lithotripsy procedures. This need for accurate stone models is particularly important as novel laser technologies are introduced in the field of lithotripsy. In this work, we present a method to prepare composite materials that replicate the properties of human kidney stones during laser lithotripsy. Their behavior is understood through the lens of near-IR spectroscopy and helps to elucidate the mechanism of laser lithotripsy in kidney stone materials.
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Affiliation(s)
- Derek S Frank
- Department of Chemistry and the Macromolecular Science & Engineering Program, University of Michigan, 930 North University, Ann Arbor, Michigan 48109, United States
| | - Ali H Aldoukhi
- Division of Endourology, Department of Urology, University of Michigan, 1500 East Medical Central Drive, SPC 5330, Ann Arbor, Michigan 48109, United States
| | - William W Roberts
- Division of Endourology, Department of Urology, University of Michigan, 1500 East Medical Central Drive, SPC 5330, Ann Arbor, Michigan 48109, United States.,Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Boulevard, Ann Arbor, Michigan 48109, United States
| | - Khurshid R Ghani
- Division of Endourology, Department of Urology, University of Michigan, 1500 East Medical Central Drive, SPC 5330, Ann Arbor, Michigan 48109, United States
| | - Adam J Matzger
- Department of Chemistry and the Macromolecular Science & Engineering Program, University of Michigan, 930 North University, Ann Arbor, Michigan 48109, United States
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37
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Abstract
Polymers play a central role in controlling the crystallization of pharmaceuticals with effects as divergent as amorphous form stabilization and the acceleration of crystallization. Here, using pyrazinamide and hydrochlorothiazide as model pharmaceuticals, it is demonstrated that the same functional group interactions are responsible for these opposing behaviors and that whether a polymer speeds or slows a crystallization can be controlled by polymer solubility. This concept is applied for the discovery of polymers to maintain drug supersaturation in solution: the strength of functional group interactions between drug and polymer is assessed through polymer-induced heteronucleation, and soluble polymers containing the strongest-interacting functional groups with drug are shown to succeed as precipitation inhibitors.
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Affiliation(s)
| | - Qingyuan Zhu
- School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
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38
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Ahmed A, Seth S, Purewal J, Wong-Foy AG, Veenstra M, Matzger AJ, Siegel DJ. Exceptional hydrogen storage achieved by screening nearly half a million metal-organic frameworks. Nat Commun 2019; 10:1568. [PMID: 30952862 PMCID: PMC6450936 DOI: 10.1038/s41467-019-09365-w] [Citation(s) in RCA: 121] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 03/08/2019] [Indexed: 12/03/2022] Open
Abstract
Few hydrogen adsorbents balance high usable volumetric and gravimetric capacities. Although metal-organic frameworks (MOFs) have recently demonstrated progress in closing this gap, the large number of MOFs has hindered the identification of optimal materials. Here, a systematic assessment of published databases of real and hypothetical MOFs is presented. Nearly 500,000 compounds were screened computationally, and the most promising were assessed experimentally. Three MOFs with capacities surpassing that of IRMOF-20, the record-holder for balanced hydrogen capacity, are demonstrated: SNU-70, UMCM-9, and PCN-610/NU-100. Analysis of trends reveals the existence of a volumetric ceiling at ∼40 g H2 L-1. Surpassing this ceiling is proposed as a new capacity target for hydrogen adsorbents. Counter to earlier studies of total hydrogen uptake in MOFs, usable capacities in the highest-capacity materials are negatively correlated with density and volumetric surface area. Instead, capacity is maximized by increasing gravimetric surface area and porosity. This suggests that property/performance trends for total capacities may not translate to usable capacities.
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Affiliation(s)
- Alauddin Ahmed
- Mechanical Engineering Department, University of Michigan, Ann Arbor, MI, 48109, United States
| | - Saona Seth
- Department of Chemistry, University of Michigan, Ann Arbor, MI, 48109, United States
| | - Justin Purewal
- Ford Motor Company, Research and Advanced Engineering, 1201 Village Rd., Dearborn, MI, 48121, United States
| | - Antek G Wong-Foy
- Department of Chemistry, University of Michigan, Ann Arbor, MI, 48109, United States
| | - Mike Veenstra
- Ford Motor Company, Research and Advanced Engineering, 1201 Village Rd., Dearborn, MI, 48121, United States
| | - Adam J Matzger
- Department of Chemistry, University of Michigan, Ann Arbor, MI, 48109, United States
| | - Donald J Siegel
- Mechanical Engineering Department, University of Michigan, Ann Arbor, MI, 48109, United States.
- Materials Science & Engineering, University of Michigan, Ann Arbor, MI, 48109, United States.
- Applied Physics Program, University of Michigan, Ann Arbor, MI, 48109, United States.
- University of Michigan Energy Institute, University of Michigan, Ann Arbor, MI, 48109, United States.
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39
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Abstract
Amorphous solid dispersions of pharmaceuticals often show improved solubility over crystalline forms. However, the crystallization of amorphous solid dispersions during storage, or from elevated supersaturation once dissolved, compromise the solubility advantage of delivery in the amorphous phase. To combat this phenomenon, polymer additives are often included in solid dispersions to inhibit crystallization; however, the optimal properties for polymer to stabilize against crystallization are not fully understood, and furthermore, it is not known how inhibition of precipitation from solution is related to the propensity of a polymer to inhibit crystallization from the amorphous phase. Here, polymers of varied hydrophobicity are employed as crystallization inhibitors in supersaturated solutions and amorphous solid dispersions of the BCS Class II pharmaceutical ethenzamide to investigate the chemical features of polymer that lead to long-term stability for a hydrophobic pharmaceutical. A postpolymerization functionalization strategy was employed to alter the hydrophobicity of poly( N-hydroxyethyl acrylamide) without changing physical properties such as number-average chain length. It was found that supersaturation maintenance for ethenzamide is improved by increasing the hydrophobicity of dissolved polymer in aqueous solution. Furthermore, amorphous solid dispersions of ethenzamide containing a more hydrophobic polymer showed superior stability compared to those containing a less hydrophobic polymer. This trend of increasing polymer hydrophobicity leading to improved amorphous stability is interpreted by parsing the effects of water absorption in amorphous solid dispersions using intermolecular interaction strengths derived from global structural analysis. By comparing the structure-function relationships, which dictate stability in solution and amorphous solid dispersions, the effect of hydrophobicity can be broadly understood for the design of polymers to impart stability throughout the application of amorphous solid dispersions.
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Affiliation(s)
- Derek S. Frank
- Department of Chemistry and the Macromolecular Science & Engineering Program, The University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Adam J. Matzger
- Department of Chemistry and the Macromolecular Science & Engineering Program, The University of Michigan, Ann Arbor, Michigan 48109, United States
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40
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Vuppuluri VS, Bennion JC, Wiscons RA, Gunduz IE, Matzger AJ, Son SF. Detonation Velocity Measurement of a Hydrogen Peroxide Solvate of CL-20. Prop , Explos , Pyrotech 2019. [DOI: 10.1002/prep.201800202] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Vasant S. Vuppuluri
- Purdue University; Department of Mechanical Engineering; 585 Purdue Mall West Lafayette, IN 47907 USA
| | - Jonathan C. Bennion
- University of Michigan; Department of Chemistry; 930N. University Ave. Ann Arbor, MI 48109 USA
- Energetic Materials Science Branch; Army Research Laboratory; Aberdeen Proving Ground, MD 21005 USA
| | - Ren A. Wiscons
- University of Michigan; Department of Chemistry; 930N. University Ave. Ann Arbor, MI 48109 USA
| | - I. Emre Gunduz
- Naval Postgraduate School; Mechanical and Aerospace Engineering Department; Monterey, CA 93943 USA
| | - Adam J. Matzger
- University of Michigan; Department of Chemistry; 930N. University Ave. Ann Arbor, MI 48109 USA
| | - Steven F. Son
- Purdue University; Department of Mechanical Engineering; 585 Purdue Mall West Lafayette, IN 47907 USA
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41
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Suresh K, Ashe JS, Matzger AJ. Far-Infrared Spectroscopy as a Probe for Polymorph Discrimination. J Pharm Sci 2019; 108:1915-1920. [PMID: 30599167 DOI: 10.1016/j.xphs.2018.12.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 12/03/2018] [Accepted: 12/13/2018] [Indexed: 11/27/2022]
Abstract
Pharmaceutical crystalline polymorph and amorphous form detection and quantification is a standard requirement in the pharmaceutical industry. Infrared (IR) spectroscopy provides an important probe for the characterization of polymorphs. Nonetheless, characterization and discrimination among polymorphs using mid-IR spectroscopy is not always possible in part because the technique mainly probes vibrational modes arising from functional groups in the sample. In the present work, far-IR spectroscopy is demonstrated for the discrimination of polymorphs. This region is influenced by delocalized lattice vibrational modes derived from intermolecular forces and packing arrangements in the crystal structure. A total of 10 polymorphic pharmaceuticals were prepared to conduct a critical evaluation of the question, does this far-IR region add value for polymorph differentiation? It is demonstrated that the far-IR region offers high discriminating power for polymorphs compared to the mid-IR spectral region. In addition, structural similarity and dissimilarity in polymorphic packing arrangements can be derived from this analysis.
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Affiliation(s)
- Kuthuru Suresh
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109
| | - Jeffrey S Ashe
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109
| | - Adam J Matzger
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109; Department of Macromolecular Science and Engineering, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109.
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42
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Nguyen-Sorenson AHT, Anderson CM, Balijepalli SK, McDonald KA, Matzger AJ, Stowers KJ. Highly active copper catalyst obtained through rapid MOF decomposition. Inorg Chem Front 2019. [DOI: 10.1039/c8qi01217b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A decomposed copper based metal–organic framework containing amorphous Cu species was found to be a highly reactive carbon supported catalyst (a-Cu@C).
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Affiliation(s)
| | | | | | | | | | - Kara J. Stowers
- Department of Chemistry and Biochemistry
- Brigham Young University
- Provo
- USA
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43
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Abstract
The salts NH4NO3 and LiNO3 were loaded in the MOF UiO-66 by a solvent-free and solvent-assisted method, respectively.
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Affiliation(s)
- Saona Seth
- Department of Chemistry
- University of Michigan
- Ann Arbor
- USA
| | - Thomas P. Vaid
- Department of Chemistry
- University of Michigan
- Ann Arbor
- USA
| | - Adam J. Matzger
- Department of Chemistry
- University of Michigan
- Ann Arbor
- USA
- Macromolecular Science and Engineering Program
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44
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Kent RV, Vaid TP, Boissonnault JA, Matzger AJ. Adsorption of tetranitromethane in zeolitic imidazolate frameworks yields energetic materials. Dalton Trans 2019; 48:7509-7513. [DOI: 10.1039/c9dt01254k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Absorption of tetranitromethane in the zeolitic imidazolate frameworks ZIF-8 and ZIF-70 is a facile route to borderline primary/secondary explosives that contain no toxic heavy metals.
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Affiliation(s)
- Rosalyn V. Kent
- Department of Chemistry
- University of Michigan
- 930 N. University Ave
- Ann Arbor
- USA
| | - Thomas P. Vaid
- Department of Chemistry
- University of Michigan
- 930 N. University Ave
- Ann Arbor
- USA
| | | | - Adam J. Matzger
- Department of Chemistry
- University of Michigan
- 930 N. University Ave
- Ann Arbor
- USA
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45
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Kersten KM, Breen ME, Mapp AK, Matzger AJ. Pharmaceutical solvate formation for the incorporation of the antimicrobial agent hydrogen peroxide. Chem Commun (Camb) 2018; 54:9286-9289. [PMID: 30059090 PMCID: PMC6163058 DOI: 10.1039/c8cc04530e] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Antimicrobial functionality is introduced into a pharmaceutical formulation of miconazole while improving solubility. The work leverages hydrate formation propensity in order to produce hydrogen peroxide solvates. The ubiquity of hydrate formation suggests that hydrogen peroxide can be broadly deployed in pharmaceuticals, rendering a liquid excipient suitable for solid pharmaceutical formulations.
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Affiliation(s)
- Kortney M Kersten
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, USA.
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46
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Damron JT, Ma J, Kurz R, Saalwächter K, Matzger AJ, Ramamoorthy A. The Influence of Chemical Modification on Linker Rotational Dynamics in Metal-Organic Frameworks. Angew Chem Int Ed Engl 2018; 57:8678-8681. [PMID: 29782692 PMCID: PMC6289050 DOI: 10.1002/anie.201805004] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Indexed: 11/11/2022]
Abstract
The robust synthetic flexibility of metal-organic frameworks (MOFs) offers a promising class of tailorable materials, for which the ability to tune specific physicochemical properties is highly desired. This is achievable only through a thorough description of the consequences for chemical manipulations both in structure and dynamics. Magic angle spinning solid-state NMR spectroscopy offers many modalities in this pursuit, particularly for dynamic studies. Herein, we employ a separated-local-field NMR approach to show how specific intraframework chemical modifications to MOF UiO-66 heavily modulate the dynamic evolution of the organic ring moiety over several orders of magnitude.
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Affiliation(s)
- Joshua T. Damron
- Department of Chemistry, University of Michigan, 930 N.
University Ave., Ann Arbor, MI 48109-1055, USA, ,
| | - Jialiu Ma
- Department of Chemistry, University of Michigan, 930 N.
University Ave., Ann Arbor, MI 48109-1055, USA, ,
| | | | | | - Adam J. Matzger
- Department of Chemistry, University of Michigan, 930 N.
University Ave., Ann Arbor, MI 48109-1055, USA, ,
- Macromolecular Science and Engineering, University of
Michigan, 2300 Hayward Avenue, Ann Arbor, MI 48109-1055, USA
| | - Ayyalusamy Ramamoorthy
- Department of Chemistry, University of Michigan, 930 N.
University Ave., Ann Arbor, MI 48109-1055, USA, ,
- Biophysics Program, University of Michigan, 930 N.
University Ave., Ann Arbor, MI 48109-1055, USA
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47
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Abstract
Amorphous solid dispersions containing a polymeric component often impart improved stability against crystallization for a small molecule relative to the pure amorphous form. However, the relationship between side chain functionalities on a polymer and the ability of a polymer to stabilize against crystallization is not well understood. To shed light on this relationship, a series of polymers were functionalized from a parent batch of poly(chloromethylstyrene- co-styrene) to investigate the effect of functionality on the stability in amorphous solid dispersions without altering the physical parameters of polymers, such as the average molecular weight or backbone chain chemistry. The kinetics of the crystallization of the nonsteroidal anti-inflammatory drug nabumetone from amorphous solid dispersions containing each functionalized polymer were interpreted on the basis of two interactions: hydrogen bonding between the drug and the polymer and the solubility of the polymer in the amorphous drug. It was found that hydrogen bonding between functionalized polymers and nabumetone can impart stability against crystallization, but only if the polymer shows significant solubility in amorphous nabumetone. Methylation of a protic functionality can improve the ability of a polymer to inhibit nabumetone crystallization by increasing the solubility in the drug, even when the resulting polymer lacks hydrogen bonding functionalities to interact with the pharmaceutical. Furthermore, factors, such as the glass transition temperature of pure polymers, were uncorrelated with isothermal nucleation rates. These findings inform a framework relating polymer functionality and stability deconvoluted from the polymer chain length or backbone chemistry with the potential to aid in the design of polymers to inhibit the crystallization of hydrophobic drugs from amorphous solid dispersions.
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Affiliation(s)
- Derek S. Frank
- Department of Chemistry and the Macromolecular Science & Engineering Program, The University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Adam J. Matzger
- Department of Chemistry and the Macromolecular Science & Engineering Program, The University of Michigan, Ann Arbor, Michigan 48109, United States
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48
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Abstract
Ferroelectric materials exhibit switchable remanent polarization due to reversible symmetry breaking under an applied electric field. Previous research has leveraged temperature-induced neutral-ionic transitions in charge-transfer (CT) cocrystals to access ferroelectrics that operate through displacement of molecules under an applied field. However, displacive ferroelectric behavior is rare in organic CT cocrystals and achieving a Curie temperature (TC ) above ambient has been elusive. Here a cocrystal between acenaphthene and 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane is presented that shows switchable remanent polarization at room temperature (TC =68 °C). Raman spectroscopy, X-ray diffraction, and solid-state NMR spectroscopy indicate the ferroelectric behavior is facilitated by acenaphthene (AN) rotation, deviating from conventional design strategies for CT ferroelectrics. These findings highlight the relevance of non-CT interactions in the design of displacive ferroelectric cocrystals.
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Affiliation(s)
- Ren A Wiscons
- Department of Chemistry and the Macromolecular Science and Engineering Program, University of Michigan, 930 North University Avenue, Ann Arbor, MI, 48109-1055, USA
| | - N Rajesh Goud
- Department of Chemistry and the Macromolecular Science and Engineering Program, University of Michigan, 930 North University Avenue, Ann Arbor, MI, 48109-1055, USA
| | - Joshua T Damron
- Department of Chemistry and the Macromolecular Science and Engineering Program, University of Michigan, 930 North University Avenue, Ann Arbor, MI, 48109-1055, USA
| | - Adam J Matzger
- Department of Chemistry and the Macromolecular Science and Engineering Program, University of Michigan, 930 North University Avenue, Ann Arbor, MI, 48109-1055, USA
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49
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Affiliation(s)
- Ren A. Wiscons
- Department of Chemistry and the Macromolecular Science and Engineering Program University of Michigan 930 North University Avenue Ann Arbor MI 48109-1055 USA
| | - N. Rajesh Goud
- Department of Chemistry and the Macromolecular Science and Engineering Program University of Michigan 930 North University Avenue Ann Arbor MI 48109-1055 USA
| | - Joshua T. Damron
- Department of Chemistry and the Macromolecular Science and Engineering Program University of Michigan 930 North University Avenue Ann Arbor MI 48109-1055 USA
| | - Adam J. Matzger
- Department of Chemistry and the Macromolecular Science and Engineering Program University of Michigan 930 North University Avenue Ann Arbor MI 48109-1055 USA
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50
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Damron JT, Ma J, Kurz R, Saalwächter K, Matzger AJ, Ramamoorthy A. The Influence of Chemical Modification on Linker Rotational Dynamics in Metal–Organic Frameworks. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Joshua T. Damron
- Department of Chemistry University of Michigan 930 N. University Ave. Ann Arbor MI 48109-1055 USA
| | - Jialiu Ma
- Department of Chemistry University of Michigan 930 N. University Ave. Ann Arbor MI 48109-1055 USA
| | | | | | - Adam J. Matzger
- Department of Chemistry University of Michigan 930 N. University Ave. Ann Arbor MI 48109-1055 USA
- Macromolecular Science and Engineering University of Michigan 2300 Hayward Avenue Ann Arbor MI 48109-1055 USA
| | - Ayyalusamy Ramamoorthy
- Department of Chemistry University of Michigan 930 N. University Ave. Ann Arbor MI 48109-1055 USA
- Biophysics Program University of Michigan 930 N. University Ave. Ann Arbor MI 48109-1055 USA
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