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Wu C, Liu Y, Hu Y, Ding M, Cui X, Liu Y, Liu P, Zhang H, Yang Y, Zhang H. An Investigation into the Performance and Mechanisms of Soymilk-Sized Handmade Xuan Paper at Different Concentrations of Soymilk. Molecules 2023; 28:6791. [PMID: 37836634 PMCID: PMC10574515 DOI: 10.3390/molecules28196791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/07/2023] [Accepted: 09/19/2023] [Indexed: 10/15/2023] Open
Abstract
Invaluable paper relics that embody a rich traditional culture have suffered damage, requiring urgent restoration. In this context, the utilization of soymilk as a sizing agent holds great significance and reverence. This study investigates the use of soymilk as a sizing agent for Xuan paper and evaluates its effects on various properties and the long-term behavior of the paper. The findings reveal that the application of soymilk as a sizing agent for Xuan paper imparts distinct properties, including hydrophobicity, improved mechanical properties, and unique chromaticity. These characteristics-arising from the papillae on the surface of the Xuan paper, the protein folding of the soy protein, and hydrogen-bonding interactions between the soy protein and paper fibers-play a crucial role in shaping the paper's unique attributes. From a physicochemical perspective, the aging process leads to multiple changes in paper properties. These changes include acidification, which refers to a decrease in pH, as well as a decline in mechanical strength, an increase in chromaticity, and a decrease in the degree of polymerization (DP) of the paper. The Ekenstam equation is employed to predict the lifespan of the paper, showing longer lifespans for Sheng Xuan paper and a negative correlation between soymilk concentration and lifespan in soymilk-sized paper. Our work provides valuable insights for the preservation and maintenance of paper, highlighting the potential benefits and challenges of using soymilk for surface sizing.
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Affiliation(s)
- Chunfang Wu
- Institute for Preservation and Conservation of Chinese Ancient Books, Fudan University, Shanghai 200433, China; (C.W.)
| | - Yangyang Liu
- School of Creative Art and Fashion Design, Huzhou Vocational and Technical College, Huzhou 313000, China
| | - Yanxiao Hu
- Institute for Preservation and Conservation of Chinese Ancient Books, Fudan University, Shanghai 200433, China; (C.W.)
| | - Ming Ding
- Behavioral and Cognitive Neuroscience Center, Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai 200433, China
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Xiang Cui
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Yixin Liu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Peng Liu
- Institute for Preservation and Conservation of Chinese Ancient Books, Fudan University, Shanghai 200433, China; (C.W.)
| | - Hongbin Zhang
- Institute for Preservation and Conservation of Chinese Ancient Books, Fudan University, Shanghai 200433, China; (C.W.)
| | - Yuliang Yang
- Institute for Preservation and Conservation of Chinese Ancient Books, Fudan University, Shanghai 200433, China; (C.W.)
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Hongdong Zhang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
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Schutte-Smith M, Visser HG. Crystal and molecular structures of fac-[Re(Bid)(PPh 3)(CO) 3] [Bid is tropolone (TropH) and tribromotropolone (TropBr 3H)]. Acta Crystallogr C Struct Chem 2022; 78:351-359. [PMID: 35662135 PMCID: PMC9167630 DOI: 10.1107/s205322962200465x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 05/02/2022] [Indexed: 11/10/2022] Open
Abstract
Two rhenium complexes, namely, fac-tricarbonyl(triphenylphosphane-κP)(tropolonato-κ2O,O')rhenium(I), [Re(C7H5O2)(C18H15P)(CO)3] or fac-[Re(Trop)(PPh3)(CO)3] (1), and fac-tricarbonyl(3,5,7-tribromotropolonato-κ2O,O')(triphenylphosphane-κP)rhenium(I), [Re(C7H2Br3O2)(C18H15P)(CO)3] or fac-[Re(TropBr3)(PPh3)(CO)3] (2) (TropH is tropolone and and TropBr3H is tribromotropolone), were synthesized and their crystal and molecular structures confirmed by single-crystal X-ray diffraction. Both crystallized in the space group P-1 and display an array of inter- and intramolecular interactions which were confirmed by solid-state 13C NMR spectroscopy using cross polarization magic angle spinning (CPMAS) techniques, as well as Hirshfeld surface analysis. The slightly longer Re-P distance of 1 [2.4987 (5) versus 2.4799 (11) Å for 1 and 2, respectively] suggests stronger back donation from the carbonyl groups in the former case, possibly due to the stronger electron-donating ability of the unsubstituted tropolonate ring system. However, this is not supported in the Re-CO bond distances of 1 and 2.
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Affiliation(s)
- Marietjie Schutte-Smith
- Department of Chemistry, University of the Free State, PO Box 339, Bloemfontein 9301, South Africa
| | - Hendrik Gideon Visser
- Department of Chemistry, University of the Free State, PO Box 339, Bloemfontein 9301, South Africa
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Geue N, Winpenny REP, Barran PE. Structural characterisation methods for supramolecular chemistry that go beyond crystallography. Chem Soc Rev 2021; 51:8-27. [PMID: 34817479 DOI: 10.1039/d0cs01550d] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Supramolecular chemistry has grown rapidly over the past three decades, yet synthetic supramolecular chemists still face several challenges when it comes to characterising their compounds. In this review, we present an introduction to structural characterisation techniques commonly used for non-crystalline supramolecular molecules, e.g. nuclear magnetic and electron paramagnetic resonance spectroscopy (NMR and EPR), mass spectrometry (MS), ion mobility mass spectrometry (IM-MS), small-angle neutron and X-ray scattering (SANS and SAXS) as well as cryogenic transmission electron microscopy (cryo-TEM). We provide an overview of their fundamental concepts based on case studies from different fields of supramolecular chemistry, e.g. interlocked structures, molecular self-assembly and host-guest chemistry, while focussing on particular strengths and weaknesses of the discussed methods. Additionally, three multi-technique case studies are examined in detail to illustrate the benefits of using complementary techniques simultaneously.
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Affiliation(s)
- Niklas Geue
- Michael Barber Centre for Collaborative Mass Spectrometry, Manchester Institute of Biotechnology, 131 Princess Street, Manchester, M1 7DN, UK.
| | - Richard E P Winpenny
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Perdita E Barran
- Michael Barber Centre for Collaborative Mass Spectrometry, Manchester Institute of Biotechnology, 131 Princess Street, Manchester, M1 7DN, UK.
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Scarperi A, Barcaro G, Pajzderska A, Martini F, Carignani E, Geppi M. Structural Refinement of Carbimazole by NMR Crystallography. Molecules 2021; 26:molecules26154577. [PMID: 34361730 PMCID: PMC8347463 DOI: 10.3390/molecules26154577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/20/2021] [Accepted: 07/23/2021] [Indexed: 11/16/2022] Open
Abstract
The characterization of the three-dimensional structure of solids is of major importance, especially in the pharmaceutical field. In the present work, NMR crystallography methods are applied with the aim to refine the crystal structure of carbimazole, an active pharmaceutical ingredient used for the treatment of hyperthyroidism and Grave’s disease. Starting from previously reported X-ray diffraction data, two refined structures were obtained by geometry optimization methods. Experimental 1H and 13C isotropic chemical shift measured by the suitable 1H and 13C high-resolution solid state NMR techniques were compared with DFT-GIPAW calculated values, allowing the quality of the obtained structure to be experimentally checked. The refined structure was further validated through the analysis of 1H-1H and 1H-13C 2D NMR correlation experiments. The final structure differs from that previously obtained from X-ray diffraction data mostly for the position of hydrogen atoms.
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Affiliation(s)
- Andrea Scarperi
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy; (A.S.); (F.M.)
| | - Giovanni Barcaro
- Institute For Chemical And Physical Processes, Italian National Council for Research, CNR/IPCF, Via G. Moruzzi 1, 56124 Pisa, Italy;
| | - Aleksandra Pajzderska
- Department of Radiospectroscopy, Faculty of Physics, Adam Mickiewicz University, Uniwersytetu Poznanskiego 2, 61-614 Poznan, Poland;
| | - Francesca Martini
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy; (A.S.); (F.M.)
- Center for Instrument Sharing, University of Pisa (CISUP), 56126 Pisa, Italy
| | - Elisa Carignani
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy; (A.S.); (F.M.)
- Institute for the Chemistry of OrganoMetallic Compounds, Italian National Council for Research, CNR/ICCOM, Via G. Moruzzi 1, 56124 Pisa, Italy
- Correspondence: (E.C.); (M.G.); Tel.: +39-050-2219353 (E.C.); +39-050-2219289 (M.G.)
| | - Marco Geppi
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy; (A.S.); (F.M.)
- Center for Instrument Sharing, University of Pisa (CISUP), 56126 Pisa, Italy
- Institute for the Chemistry of OrganoMetallic Compounds, Italian National Council for Research, CNR/ICCOM, Via G. Moruzzi 1, 56124 Pisa, Italy
- Correspondence: (E.C.); (M.G.); Tel.: +39-050-2219353 (E.C.); +39-050-2219289 (M.G.)
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Unexpected Salt/Cocrystal Polymorphism of the Ketoprofen-Lysine System: Discovery of a New Ketoprofen-l-Lysine Salt Polymorph with Different Physicochemical and Pharmacokinetic Properties. Pharmaceuticals (Basel) 2021; 14:ph14060555. [PMID: 34200917 PMCID: PMC8230491 DOI: 10.3390/ph14060555] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 06/04/2021] [Accepted: 06/07/2021] [Indexed: 12/20/2022] Open
Abstract
Ketoprofen–l-lysine salt (KLS) is a widely used nonsteroidal anti-inflammatory drug. Here, we studied deeply the solid-state characteristics of KLS to possibly identify new polymorphic drugs. Conducting a polymorph screening study and combining conventional techniques with solid-state nuclear magnetic resonance, we identified, for the first time, a salt/cocrystal polymorphism of the ketoprofen (KET)–lysine (LYS) system, with the cocrystal, KET–LYS polymorph 1 (P1), being representative of commercial KLS, and the salt, KET–LYS polymorph 2 (P2), being a new polymorphic form of KLS. Interestingly, in vivo pharmacokinetics showed that the salt polymorph has significantly higher absorption and, thus, different pharmacokinetics compared to commercial KLS (cocrystal), laying the basis for the development of faster-release/acting KLS formulations. Moreover, intrinsic dissolution rate (IDR) and electronic tongue analyses showed that the salt has a higher IDR, a more bitter taste, and a different sensorial kinetics compared to the cocrystal, suggesting that different coating/flavoring processes should be envisioned for the new compound. Thus, the new KLS polymorphic form with its different physicochemical and pharmacokinetic characteristics can open the way to the development of a new KET–LYS polymorph drug that can emphasize the properties of commercial KLS for the treatment of acute inflammatory and painful conditions.
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Kumar A, Ramisetty KA, Bordignon S, Hodnett BK, Davern P, Hudson S. Preparation, stabilisation, isolation and tableting of valsartan nanoparticles using a semi-continuous carrier particle mediated process. Int J Pharm 2021; 597:120199. [PMID: 33486046 DOI: 10.1016/j.ijpharm.2021.120199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 11/28/2020] [Accepted: 12/20/2020] [Indexed: 01/23/2023]
Abstract
This work investigated the technical feasibility of preparing, stabilizing and isolating poorly water-soluble drug nanoparticles via a small-scale antisolvent precipitation process operating in semi-continuous mode. Specifically, a novel semi-continuous process was demonstrated for the carrier particle mediated production, stabilization and isolation of valsartan nanoparticles into a solid form using montmorillonite clay particles as the carrier. The semi-continuous process operated robustly for the full duration of the experiment (~16 min) and steady-state conditions were reached after ~5 min. Nanoparticles of valsartan (51 ± 1 nm) were successfully prepared, stabilized and isolated with the help of montmorillonite (MMT) or protamine functionalized montmorillonite (PA-MMT) into the dried form by this semi-continuous route. The dissolution profile of the isolated valsartan nanocomposite solids was similar to that of valsartan nanocomposite solids produced via the corresponding laboratory scale batch mode process, indicating that the product quality (principally the nanoscale particle size and solid-state form) is retained during the semi-continuous processing of the nanoparticles. Furthermore, tablets produced via direct compression of the isolated valsartan nanocomposite solids displayed a dissolution profile comparable with that of the powdered nanocomposite material. PXRD, DSC, SSNMR and dissolution studies indicate that the valsartan nanoparticles produced via this semi-continuous process were amorphous and exhibited shelf-life stability equivalent to > 10 months.
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Affiliation(s)
- Ajay Kumar
- Synthesis and Solid State Pharmaceutical Centre, Department of Chemical Sciences, and The Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland; SSPC the Science Foundation Ireland Research Centre for Pharmaceutics, University of Limerick, Limerick V94 T9PX, Ireland.
| | - Kiran A Ramisetty
- Synthesis and Solid State Pharmaceutical Centre, Department of Chemical Sciences, and The Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland; SSPC the Science Foundation Ireland Research Centre for Pharmaceutics, University of Limerick, Limerick V94 T9PX, Ireland.
| | - Simone Bordignon
- Synthesis and Solid State Pharmaceutical Centre, Department of Chemical Sciences, and The Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland.
| | - Benjamin K Hodnett
- Synthesis and Solid State Pharmaceutical Centre, Department of Chemical Sciences, and The Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland; SSPC the Science Foundation Ireland Research Centre for Pharmaceutics, University of Limerick, Limerick V94 T9PX, Ireland.
| | - Peter Davern
- Synthesis and Solid State Pharmaceutical Centre, Department of Chemical Sciences, and The Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland; SSPC the Science Foundation Ireland Research Centre for Pharmaceutics, University of Limerick, Limerick V94 T9PX, Ireland.
| | - Sarah Hudson
- Synthesis and Solid State Pharmaceutical Centre, Department of Chemical Sciences, and The Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland; SSPC the Science Foundation Ireland Research Centre for Pharmaceutics, University of Limerick, Limerick V94 T9PX, Ireland.
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7
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Reviglio AL, Martínez FA, Montero MDA, Garro-Linck Y, Aucar GA, Sperandeo NR, Monti GA. Accurate location of hydrogen atoms in hydrogen bonds of tizoxanide from the combination of experimental and theoretical models. RSC Adv 2021; 11:7644-7652. [PMID: 35423249 PMCID: PMC8695048 DOI: 10.1039/d0ra10609g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 02/05/2021] [Indexed: 11/25/2022] Open
Abstract
To obtain detailed information about the position of hydrogen atoms in hydrogen bonds, HBs, of crystalline organic molecular compounds is not an easy task. In this work we propose a combination of ssNMR experimental data with theoretical procedures to get such information. Furthermore, the combination of experimental and theoretical models provides us with well-defined grounds to analyse the strength of π-stacking interactions between layers of hydrogen bonded molecules. Two different theoretical models were considered, both approaches being quite different. The first one is a solid-state model, so that the periodicity of a crystalline system underlies calculations of the electronic energy, the electronic density and NMR parameters. The other one is a molecular model in which molecules are taken as isolated monomers, dimers and tetramers. These two models were applied to the tizoxanide, TIZ, molecular crystal though it can widely be applied to any other molecular crystal. By the application of the quantum molecular model it was possible to learn about the way the intermolecular HBs affect the position of hydrogen atoms that belong to HBs in TIZ. This molecule has two intermolecular HBs that stabilize the structure of a basic dimer, but it also has an intramolecular HB in each monomer whose position should be optimized together with the other ones. We found that by doing this it is possible to obtain reliable results of calculations of NMR spectroscopic parameters. Working with the solid-state model we found that any local variation of the TIZ crystalline structure is correlated with the variation of the values of the NMR parameters of each nucleus. The excellent agreement between experimental and calculated chemical shifts leads to the conclusion that the N10-H10 bond distance should be (1.00 ± 0.02) Å.
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Affiliation(s)
- Ana L Reviglio
- FAMAF, UNC Córdoba Argentina
- Instituto de Física Enrique Gaviola (IFEG), CONICET-UNC Córdoba Argentina
| | - Fernando A Martínez
- Institute of Modelling and Innovation on Technology (IMIT), CONICET-UNNE Corrientes Argentina
- Physics Department, Natural and Exact Science Faculty, Northeastern University of Argentina Corrientes Argentina
| | - Marcos D A Montero
- Institute of Modelling and Innovation on Technology (IMIT), CONICET-UNNE Corrientes Argentina
- Physics Department, Natural and Exact Science Faculty, Northeastern University of Argentina Corrientes Argentina
| | - Yamila Garro-Linck
- FAMAF, UNC Córdoba Argentina
- Instituto de Física Enrique Gaviola (IFEG), CONICET-UNC Córdoba Argentina
| | - Gustavo A Aucar
- Institute of Modelling and Innovation on Technology (IMIT), CONICET-UNNE Corrientes Argentina
- Physics Department, Natural and Exact Science Faculty, Northeastern University of Argentina Corrientes Argentina
| | - Norma R Sperandeo
- Departamento de Ciencias Farmacéuticas, FCQ, UNC Córdoba Argentina
- UNITEFA-CONICET Córdoba Argentina
| | - Gustavo A Monti
- FAMAF, UNC Córdoba Argentina
- Instituto de Física Enrique Gaviola (IFEG), CONICET-UNC Córdoba Argentina
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8
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New Pharmaceutical Salts of Trazodone. Molecules 2021; 26:molecules26030769. [PMID: 33540851 PMCID: PMC7867375 DOI: 10.3390/molecules26030769] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/20/2021] [Accepted: 01/26/2021] [Indexed: 11/30/2022] Open
Abstract
New pharmaceutically acceptable salts of trazodone (trazodone hydrogen bromide and trazodone 1-hydroxy-2-naphthonic acid) for the treatment of central nervous system disorders are synthesized and described. Although trazodone salts are poorly crystalline, single-crystal X-ray diffraction data for trazodone 1-hydroxy-2-naphthonic acid were collected and analyzed as well as compared to the previously described crystal structure of commercially available trazodone hydrochloride. The powder samples of all new salts were characterized by Fourier transform infrared spectroscopy, X-ray diffraction and 13C solid-state nuclear magnetic resonance spectroscopy. Spectroscopic studies were supported by gauge including projector augmented wave (GIPAW) calculations of carbon chemical shielding constants. The main goal of our research was to find salts with better physicochemical properties and to make an attempt to associate them with both the anion structure and the most prominent interactions exhibited by the protonated trazodone cation. The dissolution profiles of trazodone from tablets prepared from various salts with lactose monohydrate were investigated. The studies revealed that salts with simple anions show a fast release of the drug while the presence of more complex anion, more strongly interacting with the cation, effects a slow-release profile of the active substance and can be used for the preparation of the tables with a delay or prolonged mode of action.
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Xu J, Terskikh VV, Chu Y, Zheng A, Huang Y. 13 C chemical shift tensors in MOF α-Mg 3 (HCOO) 6 : Which component is more sensitive to host-guest interaction? MAGNETIC RESONANCE IN CHEMISTRY : MRC 2020; 58:1082-1090. [PMID: 31659777 DOI: 10.1002/mrc.4944] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 08/23/2019] [Accepted: 09/16/2019] [Indexed: 06/10/2023]
Abstract
Metal-organic frameworks (MOFs) are a class of important porous materials with many current and potential applications. Their applications almost always involve the interaction between host framework and guest species. Therefore, understanding of host-guest interaction in MOF systems is fundamentally important. Solid-state NMR spectroscopy is an excellent technique for investigating host-guest interaction as it provides information complementary to that obtained from X-ray diffraction. In this work, using MOF α-Mg3 (HCOO)6 as an example, we demonstrated that 13 C chemical shift tensor of organic linker can be utilized to probe the host-guest interaction in MOFs. Obtaining 13 C chemical shift tensor components (δ11 , δ22 , and δ33 , where δ11 ≥ δ22 ≥ δ33 ) in this MOF is particularly challenging as there are six coordinatively equivalent but crystallographically non-equivalent carbons in the unit cell with very similar local coordination environment. Two-dimensional magic-angle-turning experiments were employed to measure the 13 C chemical shift tensors of each individual crystallographically non-equivalent carbon in three microporous α-Mg3 (HCOO)6 samples with different guest species. The results indicate that the δ22 component (with its direction approximately being co-planar with the formate anion and perpendicular to the C-H bond) is more sensitive to the adsorbate molecules inside the MOF channel due to the weak C-H···O hydrogen bonding or the ring current effect of benzene. The 13 C isotropic chemical shift, on the other hand, seems much less sensitive to the subtle changes in the local environment around formate linker induced by adsorption. The approach described in this study may be used in future studies on host-guest interaction within MOFs.
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Affiliation(s)
- Jun Xu
- Center for Rare Earth and Inorganic Functional Materials, Tianjin Key Lab for Rare Earth Materials and Applications, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin, 300350, P.R. China
- Department of Chemistry, The University of Western Ontario, London, Ontario, N6A 5B7, Canada
| | - Victor V Terskikh
- Department of Chemistry, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Yueying Chu
- Chinese Academy of Sciences, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Center for Magnetic Resonance, Wuhan Institute of Physics and Mathematics, Wuhan, 430071, P.R. China
| | - Anmin Zheng
- Chinese Academy of Sciences, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Center for Magnetic Resonance, Wuhan Institute of Physics and Mathematics, Wuhan, 430071, P.R. China
| | - Yining Huang
- Department of Chemistry, The University of Western Ontario, London, Ontario, N6A 5B7, Canada
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Ferrer M, Gallen A, Gutiérrez A, Martínez M, Ruiz E, Lorenz Y, Engeser M. Self‐Assembled, Highly Positively Charged, Allyl–Pd Crowns: Cavity‐Pocket‐Driven Interactions of Fluoroanions. Chemistry 2020; 26:7847-7860. [DOI: 10.1002/chem.202000316] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Indexed: 11/08/2022]
Affiliation(s)
- Montserrat Ferrer
- Departament de Química Inorgànica i OrgànicaSecció de Química InorgànicaUniversitat de Barcelona c/ Martí i Franquès 1-1 08028 Barcelona Spain
| | - Albert Gallen
- Departament de Química Inorgànica i OrgànicaSecció de Química InorgànicaUniversitat de Barcelona c/ Martí i Franquès 1-1 08028 Barcelona Spain
| | - Albert Gutiérrez
- Departament de Química Inorgànica i OrgànicaSecció de Química InorgànicaUniversitat de Barcelona c/ Martí i Franquès 1-1 08028 Barcelona Spain
| | - Manuel Martínez
- Departament de Química Inorgànica i OrgànicaSecció de Química InorgànicaUniversitat de Barcelona c/ Martí i Franquès 1-1 08028 Barcelona Spain
| | - Eliseo Ruiz
- Departament de Química Inorgànica i OrgànicaSecció de Química InorgànicaUniversitat de Barcelona c/ Martí i Franquès 1-1 08028 Barcelona Spain
- Institut de Química Teòrica i ComputacionalUniversitat de Barcelona c/ Martí i Franquès 1-11 08028 Barcelona Spain
| | - Yvonne Lorenz
- Kekulé-Institute for Organic Chemistry and BiochemistryUniversity of Bonn Gerhard-Domagk-Str. 1 53121 Bonn Germany
| | - Marianne Engeser
- Kekulé-Institute for Organic Chemistry and BiochemistryUniversity of Bonn Gerhard-Domagk-Str. 1 53121 Bonn Germany
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Hodgkinson P. NMR crystallography of molecular organics. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2020; 118-119:10-53. [PMID: 32883448 DOI: 10.1016/j.pnmrs.2020.03.001] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 02/25/2020] [Accepted: 03/13/2020] [Indexed: 06/11/2023]
Abstract
Developments of NMR methodology to characterise the structures of molecular organic structures are reviewed, concentrating on the previous decade of research in which density functional theory-based calculations of NMR parameters in periodic solids have become widespread. With a focus on demonstrating the new structural insights provided, it is shown how "NMR crystallography" has been used in a spectrum of applications from resolving ambiguities in diffraction-derived structures (such as hydrogen atom positioning) to deriving complete structures in the absence of diffraction data. As well as comprehensively reviewing applications, the different aspects of the experimental and computational techniques used in NMR crystallography are surveyed. NMR crystallography is seen to be a rapidly maturing subject area that is increasingly appreciated by the wider crystallographic community.
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Affiliation(s)
- Paul Hodgkinson
- Department of Chemistry, Durham University, Stockton Road, Durham DH1 3LE, UK.
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12
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Vismara R, Tuci G, Tombesi A, Domasevitch KV, Di Nicola C, Giambastiani G, Chierotti MR, Bordignon S, Gobetto R, Pettinari C, Rossin A, Galli S. Tuning Carbon Dioxide Adsorption Affinity of Zinc(II) MOFs by Mixing Bis(pyrazolate) Ligands with N-Containing Tags. ACS APPLIED MATERIALS & INTERFACES 2019; 11:26956-26969. [PMID: 31276365 DOI: 10.1021/acsami.9b08015] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The four zinc(II) mixed-ligand metal-organic frameworks (MIXMOFs) Zn(BPZ)x(BPZNO2)1-x, Zn(BPZ)x(BPZNH2)1-x, Zn(BPZNO2)x(BPZNH2)1-x, and Zn(BPZ)x(BPZNO2)y(BPZNH2)1-x-y (H2BPZ = 4,4'-bipyrazole; H2BPZNO2 = 3-nitro-4,4'-bipyrazole; H2BPZNH2 = 3-amino-4,4'-bipyrazole) were prepared through solvothermal routes and fully investigated in the solid state. Isoreticular to the end members Zn(BPZ) and Zn(BPZX) (X = NO2, NH2), they are the first examples ever reported of (pyr)azolate MIXMOFs. Their crystal structure is characterized by a three-dimensional open framework with one-dimensional square or rhombic channels decorated by the functional groups. Accurate information about ligand stoichiometric ratio was determined (for the first time on MIXMOFs) through integration of selected ligands skeleton resonances from 13C cross polarized magic angle spinning solid-state NMR spectra collected on the as-synthesized materials. Like other poly(pyrazolate) MOFs, the four MIXMOFs are thermally stable, with decomposition temperatures between 708 and 726 K. As disclosed by N2 adsorption at 77 K, they are micro-mesoporous materials with Brunauer-Emmett-Teller specific surface areas in the range 400-600 m2/g. A comparative study (involving also the single-ligand analogues) of CO2 adsorption capacity, CO2 isosteric heat of adsorption (Qst), and CO2/N2 selectivity in equimolar mixtures at p = 1 bar and T = 298 K cast light on interesting trends, depending on ligand tag nature or ligand stoichiometric ratio. In particular, the amino-decorated compounds show higher Qst values and CO2/N2 selectivity vs the nitro-functionalized analogues; in addition, tag "dilution" [upon passing from Zn(BPZX) to Zn(BPZ)x(BPZX)1-x] increases CO2 adsorption selectivity over N2. The simultaneous presence of amino and nitro groups is not beneficial for CO2 uptake. Among the compounds studied, the best compromise among uptake capacity, Qst, and CO2/N2 selectivity is represented by Zn(BPZ)x(BPZNH2)1-x.
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Affiliation(s)
- Rebecca Vismara
- Dipartimento di Scienza e Alta Tecnologia , Università dell'Insubria , Via Valleggio 11 , 22100 Como , Italy
| | - Giulia Tuci
- Istituto di Chimica dei Composti Organometallici (ICCOM-CNR) , Via Madonna del Piano 10 , 50019 Sesto Fiorentino (Firenze) , Italy
| | | | | | | | - Giuliano Giambastiani
- Istituto di Chimica dei Composti Organometallici (ICCOM-CNR) , Via Madonna del Piano 10 , 50019 Sesto Fiorentino (Firenze) , Italy
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali , Via Giusti 9 , 50121 Firenze , Italy
- Institute of Chemistry and Processes for Energy, Environment and Health (ICPEES) , UMR 7515 CNRS-University of Strasbourg (UdS) , 25, rue Becquerel , Strasbourg 67087 Cedex 02, France
| | - Michele R Chierotti
- Department of Chemistry and NIS Centre , University of Torino , Via Giuria 7 , Torino 10125 , Italy
| | - Simone Bordignon
- Department of Chemistry and NIS Centre , University of Torino , Via Giuria 7 , Torino 10125 , Italy
| | - Roberto Gobetto
- Department of Chemistry and NIS Centre , University of Torino , Via Giuria 7 , Torino 10125 , Italy
| | | | - Andrea Rossin
- Istituto di Chimica dei Composti Organometallici (ICCOM-CNR) , Via Madonna del Piano 10 , 50019 Sesto Fiorentino (Firenze) , Italy
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali , Via Giusti 9 , 50121 Firenze , Italy
| | - Simona Galli
- Dipartimento di Scienza e Alta Tecnologia , Università dell'Insubria , Via Valleggio 11 , 22100 Como , Italy
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali , Via Giusti 9 , 50121 Firenze , Italy
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Orelma H, Virtanen T, Spoljaric S, Lehmonen J, Seppälä J, Rojas OJ, Harlin A. Cyclodextrin-Functionalized Fiber Yarns Spun from Deep Eutectic Cellulose Solutions for Nonspecific Hormone Capture in Aqueous Matrices. Biomacromolecules 2018; 19:652-661. [PMID: 29366320 PMCID: PMC6150646 DOI: 10.1021/acs.biomac.7b01765] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
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A wood
based yarn platform for capturing pharmaceutical molecules
from water was developed. Cellulose fiber yarns were modified with
cyclodextrins, and the capture of 17α-ethinyl estradiol (EE2),
a synthetic estrogen hormone used as contraceptive, from water was
tested. The yarns were prepared by spinning a deep eutectic solution
(DES) of cellulose in choline chloride-urea. Despite their high porosity
and water sorption capacity (5 g/g), the spun fiber yarns displayed
high wet strength, up to 60% of that recorded in dry condition (128
MPa with 17% strain at break). Cyclodextrin irreversible attachment
on the yarns was achieved with adsorbed chitosan and the conjugation
reactions and capture of EE2 by the cyclodextrin-modified cellulose
were confirmed via online detection with Surface Plasmon Resonance
(SPR). The facile synthesis of the bioactive yarns and EE2 binding
capacity from aqueous matrices (as high as 2.5 mg/g) indicate excellent
prospects for inexpensive platforms in disposable affinity filtration.
The study presents a strategy to produce a wood fiber based yarn to
be used as a platform for human and veterinary pharmaceutical hormone
capture.
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Affiliation(s)
- Hannes Orelma
- VTT Technical Research Centre of Finland Ltd , Biologinkuja 7, FI-02044 Espoo, Finland
| | - Tommi Virtanen
- VTT Technical Research Centre of Finland Ltd , Biologinkuja 7, FI-02044 Espoo, Finland
| | | | - Jani Lehmonen
- VTT Technical Research Centre of Finland Ltd , Biologinkuja 7, FI-02044 Espoo, Finland
| | | | | | - Ali Harlin
- VTT Technical Research Centre of Finland Ltd , Biologinkuja 7, FI-02044 Espoo, Finland
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14
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Yang J, Li W, Liu Q, Liu H. Dissolution of antibiotics mycelium in ionic liquids: Performance and mechanism. Chin J Chem Eng 2018. [DOI: 10.1016/j.cjche.2017.04.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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15
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Li X, Zheng Y, Gou Q, Feng G, Xia Z. Microwave spectroscopy of 2-(trifluoromethyl)pyridine⋯water complex: Molecular structure and hydrogen bond. J Chem Phys 2018; 148:044306. [PMID: 29390811 DOI: 10.1063/1.5018164] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In order to explore the -CF3 substitution effect on the complexation of pyridine, we investigated the 2-(trifluoromethyl)pyridine⋯water complex by using pulsed jet Fourier transform microwave spectroscopy complemented with quantum chemical calculations. Experimental assignment and ab initio calculations confirmed that the observed complex is stabilized through N⋯H-O and O⋯H-C hydrogen bonds forming a five-membered ring structure. The bonding distance in N⋯H-O is determined to be 2.027(2) Å, whilst that in O⋯H-C interaction is 2.728(2) Å. The quantum theory of atoms in molecules analysis indicates that the interaction energy of N⋯H-O hydrogen bond is ∼22 kJ mol-1 and that for O⋯H-C hydrogen bond is ∼5 kJ mol-1. The water molecule lies almost in the plane of the aromatic ring in the complex. The -CF3 substitution to pyridine quenches the tunneling splitting path of the internal motion of water molecule.
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Affiliation(s)
- Xiaolong Li
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331 Chongqing, China
| | - Yang Zheng
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331 Chongqing, China
| | - Qian Gou
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331 Chongqing, China
| | - Gang Feng
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331 Chongqing, China
| | - Zhining Xia
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331 Chongqing, China
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Kumar V, Pilati T, Quici S, Chierotti MR, Nervi C, Gobetto R, Resnati G. Proton in a Confined Space: Structural Studies of H + ⊂Crypt-111 Iodide and Some Halogen-Bonded Derivatives. Chemistry 2017; 23:14462-14468. [PMID: 28657685 DOI: 10.1002/chem.201701699] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2017] [Revised: 06/27/2017] [Indexed: 11/06/2022]
Abstract
Experimental observations and modeling data are reported on the solid-state structural features of crypt- 111⋅HI (1) and the three-component co-crystals that 1 forms with α,ω-diiodoperfluoroalkanes 2 a-d. X-ray analyses indicate that, in all five systems and at low temperature, the caged proton is covalently bonded to a single nitrogen atom and is involved in a network of intramolecular hydrogen bonds. In contrast, room-temperature, solid-state 15 N NMR spectroscopy suggests magnetic equivalency of the two N atoms of crypt-111 in both 1 and co-crystals of 1 with diiodoperfluoroalkanes. Computational modelling confirms that the acidic hydrogen inside the cavity preferentially sits along the internitrogen axis and is covalently bonded to one nitrogen. The computed energy barriers suggest that the hopping of the encapsulated proton between the two N atoms of the cage can occur in the halogen-bonded co-crystals of 1⋅2, but it is hardly possible in the pure H+ ⊂crypt-111 iodide 1. These different pictures of the proton position and dynamics obtained by using different techniques and conditions confirm the unique characteristics of the confined space within the cavity of crypr-111 and the distinctive features of processes occurring therein.
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Affiliation(s)
- Vijith Kumar
- Nanostructured Fluorinated Materials Laboratory (NFMLab), Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via L. Mancinelli 7, 20131, Milan, Italy
| | - Tullio Pilati
- Nanostructured Fluorinated Materials Laboratory (NFMLab), Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via L. Mancinelli 7, 20131, Milan, Italy
| | - Silvio Quici
- CNR, Istituto di Scienze e Tecnologie Molecolari, Via C. Golgi 19, 20133, Milan, Italy
| | - Michele R Chierotti
- Department of Chemistry and NIS, University of Turin, Via P. Giuria 7, 10125, Turin, Italy
| | - Carlo Nervi
- Department of Chemistry and NIS, University of Turin, Via P. Giuria 7, 10125, Turin, Italy
| | - Roberto Gobetto
- Department of Chemistry and NIS, University of Turin, Via P. Giuria 7, 10125, Turin, Italy
| | - Giuseppe Resnati
- Nanostructured Fluorinated Materials Laboratory (NFMLab), Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via L. Mancinelli 7, 20131, Milan, Italy
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17
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Cerreia Vioglio P, Chierotti MR, Gobetto R. Pharmaceutical aspects of salt and cocrystal forms of APIs and characterization challenges. Adv Drug Deliv Rev 2017; 117:86-110. [PMID: 28687273 DOI: 10.1016/j.addr.2017.07.001] [Citation(s) in RCA: 139] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 06/23/2017] [Accepted: 07/03/2017] [Indexed: 11/28/2022]
Abstract
In recent years many efforts have been devoted to the screening and the study of new solid-state forms of old active pharmaceutical ingredients (APIs) with salification or co-crystallization processes, thus modulating final properties without changing the pharmacological nature. Salts, hydrates/solvates, and cocrystals are the common solid-state forms employed. They offer the intriguing possibility of exploring different pharmaceutical properties for a single API in the quest of enhancing the final drug product. New synthetic strategies and advanced characterization techniques have been recently proposed in this hot topic for pharmaceutical companies. This paper reviews the recent progresses in the field particularly focusing on the characterization challenges encountered when the nature of the solid-state form must be determined. The aim of this article is to offer the state-of-the-art on this subject in order to develop new insights and to promote cooperative efforts in the fascinating field of API salt and cocrystal forms.
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Affiliation(s)
| | - Michele R Chierotti
- Department of Chemistry, University of Torino, Via P. Giuria 7, 10125 Torino, Italy
| | - Roberto Gobetto
- Department of Chemistry, University of Torino, Via P. Giuria 7, 10125 Torino, Italy.
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18
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Carletta A, Spinelli F, d'Agostino S, Ventura B, Chierotti MR, Gobetto R, Wouters J, Grepioni F. Halogen-Bond Effects on the Thermo- and Photochromic Behaviour of Anil-Based Molecular Co-crystals. Chemistry 2017; 23:5317-5329. [PMID: 28240437 DOI: 10.1002/chem.201605953] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 02/23/2017] [Indexed: 11/11/2022]
Abstract
N-Salicilideneanilines are among the most studied thermo- and photochromic systems in the solid state. Although thermochromism is a general property of crystalline N-salicilideneanilines, photochromism is known in a limited number of cases. As a method for the construction of thermo- and photo-responsive molecular architectures, the co-crystallisation of 1,2,4,5-tetrafluoro-3,6-diiodobenzene (I2F4) with three selected imines of o-vanillin, named 1, 2 and 3, obtained through a condensation reaction with 3-aminopyridine, 4-bromoaniline and 4-iodoaniline, respectively, is reported herein. All crystals and co-crystals have been characterised by means of solid-state complementary techniques (X-ray diffraction, solid-state NMR spectroscopy, absorption and emission spectroscopy). The role of halogen bonding and crystal packing in the optical and chromic properties of all solid materials is discussed. All solids exhibit thermochromic behaviour, and three of them (2, 22 ⋅I2F4 and 32 ⋅I2F4) are also photochromic. Imine derivative 3 crystallises in two different polymorphic forms (3 A and 3 B) and a solvate (3Solv ). The bromo and iodo derivatives, 2 and 3 B, are isomorphous and form isomorphous co-crystals with I2F4, but behave differently when exposed to UV light because only crystalline 2 is photochromic. Interestingly, the replacement of bromine with iodine seems to turn off the photochromism because crystalline 3 A and 3Solv , and even the 20.7 30.3 solid solution, do not manifest photochromic behaviour.
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Affiliation(s)
- Andrea Carletta
- Department of Chemistry, University of Namur (UNamur), Rue de Bruxelles 61, Namur, 5000, Belgium
| | - Floriana Spinelli
- Università di Bologna, Dipartimento di Chimica G. Ciamician, Via Selmi 2, 40126, Bologna, Italy
| | - Simone d'Agostino
- Università di Bologna, Dipartimento di Chimica G. Ciamician, Via Selmi 2, 40126, Bologna, Italy
| | - Barbara Ventura
- Istituto per la Sintesi Organica e la Fotoreattività (ISOF)-CNR, Via P. Gobetti 101, 40129, Bologna, Italy
| | - Michele R Chierotti
- Dipartimento di Chimica and NIS Centre, Università di Torino, via Giuria 7, 10125, Turin, Italy
| | - Roberto Gobetto
- Dipartimento di Chimica and NIS Centre, Università di Torino, via Giuria 7, 10125, Turin, Italy
| | - Johan Wouters
- Department of Chemistry, University of Namur (UNamur), Rue de Bruxelles 61, Namur, 5000, Belgium
| | - Fabrizia Grepioni
- Università di Bologna, Dipartimento di Chimica G. Ciamician, Via Selmi 2, 40126, Bologna, Italy
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Marchetti A, Chen J, Pang Z, Li S, Ling D, Deng F, Kong X. Understanding Surface and Interfacial Chemistry in Functional Nanomaterials via Solid-State NMR. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1605895. [PMID: 28247966 DOI: 10.1002/adma.201605895] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 12/26/2016] [Indexed: 05/24/2023]
Abstract
Surface and interfacial chemistry is of fundamental importance in functional nanomaterials applied in catalysis, energy storage and conversion, medicine, and other nanotechnologies. It has been a perpetual challenge for the scientific community to get an accurate and comprehensive picture of the structures, dynamics, and interactions at interfaces. Here, some recent examples in the major disciplines of nanomaterials are selected (e.g., nanoporous materials, battery materials, nanocrystals and quantum dots, supramolecular assemblies, drug-delivery systems, ionomers, and graphite oxides) and it is shown how interfacial chemistry can be addressed through the perspective of solid-state NMR characterization techniques.
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Affiliation(s)
- Alessandro Marchetti
- Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Juner Chen
- Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Zhenfeng Pang
- Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Shenhui Li
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, P. R. China
| | - Daishun Ling
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, P. R. China
| | - Feng Deng
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, P. R. China
| | - Xueqian Kong
- Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China
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Giannici F, Mossuto Marculescu A, Cattaneo AS, Tealdi C, Mustarelli P, Longo A, Martorana A. Covalent and Ionic Functionalization of HLN Layered Perovskite by Sonochemical Methods. Inorg Chem 2016; 56:645-653. [DOI: 10.1021/acs.inorgchem.6b02581] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Francesco Giannici
- Dipartimento di Fisica e Chimica, Università degli Studi di Palermo, Viale delle Scienze ed. 17, I-90128 Palermo, Italy
| | - Adriana Mossuto Marculescu
- Dipartimento di Fisica e Chimica, Università degli Studi di Palermo, Viale delle Scienze ed. 17, I-90128 Palermo, Italy
| | - Alice Silvia Cattaneo
- Dipartimento di Chimica Sezione di Chimica-Fisica, Università degli Studi di Pavia, Via Taramelli 16, I-2700 Pavia, Italy
| | - Cristina Tealdi
- Dipartimento di Chimica Sezione di Chimica-Fisica, Università degli Studi di Pavia, Via Taramelli 16, I-2700 Pavia, Italy
| | - Piercarlo Mustarelli
- Dipartimento di Chimica Sezione di Chimica-Fisica, Università degli Studi di Pavia, Via Taramelli 16, I-2700 Pavia, Italy
| | - Alessandro Longo
- CNR−Istituto per lo Studio dei Materiali Nanostrutturati, Via U. La Malfa, I-90146 Palermo, Italy
- Netherlands Organization for Scientific Research at ESRF, F-38043 Grenoble, France
| | - Antonino Martorana
- Dipartimento di Fisica e Chimica, Università degli Studi di Palermo, Viale delle Scienze ed. 17, I-90128 Palermo, Italy
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21
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Golob S, Perry M, Lusi M, Chierotti MR, Grabnar I, Lassiani L, Voinovich D, Zaworotko MJ. Improving Biopharmaceutical Properties of Vinpocetine Through Cocrystallization. J Pharm Sci 2016; 105:3626-3633. [DOI: 10.1016/j.xphs.2016.09.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 08/31/2016] [Accepted: 09/16/2016] [Indexed: 01/08/2023]
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Abstract
On the basis of many literature measurements, a critical overview is given on essential noncovalent interactions in synthetic supramolecular complexes, accompanied by analyses with selected proteins. The methods, which can be applied to derive binding increments for single noncovalent interactions, start with the evaluation of consistency and additivity with a sufficiently large number of different host-guest complexes by applying linear free energy relations. Other strategies involve the use of double mutant cycles, of molecular balances, of dynamic combinatorial libraries, and of crystal structures. Promises and limitations of these strategies are discussed. Most of the analyses stem from solution studies, but a few also from gas phase. The empirically derived interactions are then presented on the basis of selected complexes with respect to ion pairing, hydrogen bonding, electrostatic contributions, halogen bonding, π-π-stacking, dispersive forces, cation-π and anion-π interactions, and contributions from the hydrophobic effect. Cooperativity in host-guest complexes as well as in self-assembly, and entropy factors are briefly highlighted. Tables with typical values for single noncovalent free energies and polarity parameters are in the Supporting Information.
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Affiliation(s)
- Frank Biedermann
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT) , Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Hans-Jörg Schneider
- FR Organische Chemie der Universität des Saarlandes , D-66041 Saarbrücken, Germany
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Liu P, Li W, Kan Z, Sun H, Ma J. Factor Analysis of Conformations and NMR Signals of Rotaxanes: AIMD and Polarizable MD Simulations. J Phys Chem A 2016; 120:490-502. [PMID: 26756354 DOI: 10.1021/acs.jpca.5b10085] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The interlocked ⟨rod | ring⟩ structures of pseudorotaxanes and [2]rotaxanes are usually maintained by the complex hydrogen-bonding (H-bonding) network between the rod and ring. Ab initio molecular dynamics (AIMD) using generalized energy-based fragmentation approach and polarizable force field (polar FF)-based molecular dynamics (MD) simulations were performed to investigate the conformational changes of mechanically interlocked systems and to obtain the ensemble-averaged NMR chemical shifts. Factor analysis (FA) demonstrates that the ring H-donor (2,6 pyridinedicarboxamide group) plays an important role in the ring-rod recognition. In comparison to the conventional fixed-charge force field, the polarization effect is crucial to account for the H-bonding interactions in supramolecular systems. In the hybrid scheme, the polar FF-based MD simulations are used to generate different initial states for the AIMD simulations, which are able to give better prediction of ensemble-averaged NMR signals for chemically equivalent amide protons. The magnitude of the deshielding shift of NMR signal is correlated with the length of hydrogen bond. The polar FF model with variable charges shows that the dipole-dipole interactions between the flexible diethylene glycol chain of ring and polar solvents induce the upfield shifts of NMR signals of rod H-donors and the directional distribution of the neighboring CH3CN solvents.
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Affiliation(s)
- Pingying Liu
- School of Chemistry and Chemical Engineering, Key Laboratory of Mesoscopic Chemistry of MOE, Nanjing University , Nanjing 210093, People's Republic of China.,School of Materials Science and Engineering, Jingdezhen Ceramic Institute , Jingdezhen 333403, People's Republic of China
| | - Wei Li
- School of Chemistry and Chemical Engineering, Key Laboratory of Mesoscopic Chemistry of MOE, Nanjing University , Nanjing 210093, People's Republic of China
| | - Zigui Kan
- School of Chemistry and Chemical Engineering, Key Laboratory of Mesoscopic Chemistry of MOE, Nanjing University , Nanjing 210093, People's Republic of China
| | - Hui Sun
- School of Chemistry and Chemical Engineering, Key Laboratory of Mesoscopic Chemistry of MOE, Nanjing University , Nanjing 210093, People's Republic of China
| | - Jing Ma
- School of Chemistry and Chemical Engineering, Key Laboratory of Mesoscopic Chemistry of MOE, Nanjing University , Nanjing 210093, People's Republic of China
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A thermodynamic and 1H NMR spectroscopy study of binary mixtures of polyethylene glycol butyl ether (PEGBE) 206 with 1-Butanol and 2-(Methylamino) ethanol(MAE). J Mol Liq 2016. [DOI: 10.1016/j.molliq.2015.12.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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25
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Pettinari R, Marchetti F, Pettinari C, Condello F, Skelton BW, White AH, Chierotti MR, Gobetto R. Self-assembly of arene ruthenium acylpyrazolone fragments to tetranuclear metallacycles. Molecular structures and solid-state 15N CPMAS NMR correlations. Dalton Trans 2016; 45:3974-82. [DOI: 10.1039/c6dt00168h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mono- and tetranuclear Ru(ii) half-sandwich complexes containing acylpyrazolone ligands. 13C and 15N solid state NMR spectroscopy.
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Affiliation(s)
| | - Fabio Marchetti
- School of Science and Technology
- University of Camerino
- 62032 Camerino
- Italy
| | | | | | - Brian W. Skelton
- School of Chemistry and Biochemistry M310
- The University of Western Australia
- Crawley
- Australia
| | - Allan H. White
- Centre for Microscopy
- Characterization and Analysis M010
- The University of Western Australia
- Crawley
- Australia
| | | | - Roberto Gobetto
- Dipartimento di Chimica and NIS Centre
- University of Torino
- 10125 Torino
- Italy
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26
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Vioglio PC, Chierotti MR, Gobetto R. Solid-state nuclear magnetic resonance as a tool for investigating the halogen bond. CrystEngComm 2016. [DOI: 10.1039/c6ce02219g] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Avram L, Goldbourt A, Cohen Y. Hexameric Capsules Studied by Magic Angle Spinning Solid-State NMR Spectroscopy: Identifying Solvent Molecules in Pyrogallol[4]arene Capsules. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506683] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Liat Avram
- School of Chemistry; The Raymond and Beverly Sackler Faculty of Exact Sciences; Tel Aviv University; Ramat Aviv Tel Aviv 69978 Israel
| | - Amir Goldbourt
- School of Chemistry; The Raymond and Beverly Sackler Faculty of Exact Sciences; Tel Aviv University; Ramat Aviv Tel Aviv 69978 Israel
| | - Yoram Cohen
- School of Chemistry; The Raymond and Beverly Sackler Faculty of Exact Sciences; Tel Aviv University; Ramat Aviv Tel Aviv 69978 Israel
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28
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Avram L, Goldbourt A, Cohen Y. Hexameric Capsules Studied by Magic Angle Spinning Solid-State NMR Spectroscopy: Identifying Solvent Molecules in Pyrogallol[4]arene Capsules. Angew Chem Int Ed Engl 2015; 55:904-7. [DOI: 10.1002/anie.201506683] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 10/06/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Liat Avram
- School of Chemistry; The Raymond and Beverly Sackler Faculty of Exact Sciences; Tel Aviv University; Ramat Aviv Tel Aviv 69978 Israel
| | - Amir Goldbourt
- School of Chemistry; The Raymond and Beverly Sackler Faculty of Exact Sciences; Tel Aviv University; Ramat Aviv Tel Aviv 69978 Israel
| | - Yoram Cohen
- School of Chemistry; The Raymond and Beverly Sackler Faculty of Exact Sciences; Tel Aviv University; Ramat Aviv Tel Aviv 69978 Israel
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29
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Klamor S, Schröder M, Brunklaus G, Niehoff P, Berkemeier F, Schappacher FM, Winter M. On the interaction of water-soluble binders and nano silicon particles: alternative binder towards increased cycling stability at elevated temperatures. Phys Chem Chem Phys 2015; 17:5632-41. [PMID: 25623421 DOI: 10.1039/c4cp04090b] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Silicon based composites are among the most promising negative electrodes for lithium ion battery applications due to their high theoretical capacities. One major drawback of silicon based anodes are their large volume changes during lithiation and delithiation. Although many efforts have been made in view of new binder materials and improved electrolytes, the resulting battery cell suffers from severe capacity fading at ambient or elevated temperatures, respectively. The strong reactivity with the electrolyte is considered to be responsible for the reduced cycle life at elevated temperatures. In this work we introduce silicon composite anodes with a novel composition based on a gellan gum binder material that show an improved cycling performance at ambient temperature and at 60 °C. To elucidate the influence of the binder material, we investigated the structure of the silicon based composite anodes in order to understand the nature of the interaction of the gellan gum based binder polymers with the silicon particles in comparison with a common CMC binder. Also the influence of the choice of binder on the interactions at the interface between electrode surface and electrolyte were studied. A combination of powerful techniques including solid state NMR, TEM and EELS, XPS as well as FTIR were applied.
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Affiliation(s)
- S Klamor
- MEET Battery Research Center, University of Münster, 48149 Münster, Germany.
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30
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Rawal A, Hook JM, Robson RN, Gunzelmann D, Pfeffer FM, O'Dell LA. Solid-state NMR as a probe of anion binding: molecular dynamics and associations in a [5]polynorbornane bisurea host complexed with terephthalate. Phys Chem Chem Phys 2015; 17:22195-203. [DOI: 10.1039/c5cp03628c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A suite of solid-state NMR experiments is used to study a supramolecular complex consisting of a [5]polynorbornane bisurea host and terephthalate dianion guest, revealing information on the dynamics of both the host and guest species.
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Affiliation(s)
- Aditya Rawal
- Mark Wainwright Analytical Centre
- University of New South Wales
- NSW 2052
- Australia
| | - James M. Hook
- Mark Wainwright Analytical Centre
- University of New South Wales
- NSW 2052
- Australia
| | - Ryan N. Robson
- Centre for Chemistry and Biotechnology
- School of Life and Environmental Sciences
- Deakin University
- Victoria 3220
- Australia
| | - Daniel Gunzelmann
- Institute for Frontier Materials
- Deakin University
- Victoria 3220
- Australia
| | - Frederick M. Pfeffer
- Centre for Chemistry and Biotechnology
- School of Life and Environmental Sciences
- Deakin University
- Victoria 3220
- Australia
| | - Luke A. O'Dell
- Institute for Frontier Materials
- Deakin University
- Victoria 3220
- Australia
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31
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Kins CF, Sengupta E, Kaltbeitzel A, Wagner M, Lieberwirth I, Spiess HW, Hansen MR. Morphological Anisotropy and Proton Conduction in Multiblock Copolyimide Electrolyte Membranes. Macromolecules 2014. [DOI: 10.1021/ma500253s] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Christoph F. Kins
- Max Planck Institute
for Polymer Research, Ackermannweg
10, D-55128 Mainz, Germany
| | - Esha Sengupta
- Max Planck Institute
for Polymer Research, Ackermannweg
10, D-55128 Mainz, Germany
| | - Anke Kaltbeitzel
- Max Planck Institute
for Polymer Research, Ackermannweg
10, D-55128 Mainz, Germany
| | - Manfred Wagner
- Max Planck Institute
for Polymer Research, Ackermannweg
10, D-55128 Mainz, Germany
| | - Ingo Lieberwirth
- Max Planck Institute
for Polymer Research, Ackermannweg
10, D-55128 Mainz, Germany
| | - Hans Wolfgang Spiess
- Max Planck Institute
for Polymer Research, Ackermannweg
10, D-55128 Mainz, Germany
| | - Michael Ryan Hansen
- Max Planck Institute
for Polymer Research, Ackermannweg
10, D-55128 Mainz, Germany
- Interdisciplinary
Nanoscience Center (iNANO) and Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
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32
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Baldrighi M, Bartesaghi D, Cavallo G, Chierotti MR, Gobetto R, Metrangolo P, Pilati T, Resnati G, Terraneo G. Polymorphs and co-crystals of haloprogin: an antifungal agent. CrystEngComm 2014. [DOI: 10.1039/c4ce00367e] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Haloprogin is a widely used antifungal agent. Here we report the first polymorphs and halogen-bonded co-crystals ever described.
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Affiliation(s)
- Michele Baldrighi
- NFMLab-Laboratory of Nanostructured Fluorinated Materials (NFMLab)
- Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”
- Politecnico di Milano
- 20131 Milan, Italy
| | - Davide Bartesaghi
- NFMLab-Laboratory of Nanostructured Fluorinated Materials (NFMLab)
- Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”
- Politecnico di Milano
- 20131 Milan, Italy
| | - Gabriella Cavallo
- NFMLab-Laboratory of Nanostructured Fluorinated Materials (NFMLab)
- Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”
- Politecnico di Milano
- 20131 Milan, Italy
| | | | - Roberto Gobetto
- Department of Chemistry
- Università di Torino
- 10125 Torino, Italy
| | - Pierangelo Metrangolo
- NFMLab-Laboratory of Nanostructured Fluorinated Materials (NFMLab)
- Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”
- Politecnico di Milano
- 20131 Milan, Italy
| | - Tullio Pilati
- NFMLab-Laboratory of Nanostructured Fluorinated Materials (NFMLab)
- Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”
- Politecnico di Milano
- 20131 Milan, Italy
| | - Giuseppe Resnati
- NFMLab-Laboratory of Nanostructured Fluorinated Materials (NFMLab)
- Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”
- Politecnico di Milano
- 20131 Milan, Italy
| | - Giancarlo Terraneo
- NFMLab-Laboratory of Nanostructured Fluorinated Materials (NFMLab)
- Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”
- Politecnico di Milano
- 20131 Milan, Italy
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33
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Zehe C, Schmidt M, Siegel R, Kreger K, Daebel V, Ganzleben S, Schmidt HW, Senker J. Influence of fluorine side-group substitution on the crystal structure formation of benzene-1,3,5-trisamides. CrystEngComm 2014. [DOI: 10.1039/c4ce01077a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The crystal structure of 1,3,5-tris(2-fluoro-2-methylpropionylamino)benzene was solved by combining powder X-ray diffraction, solid-state NMR spectroscopy and quantum chemical calculations.
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Affiliation(s)
- Christoph Zehe
- Inorganic Chemistry III and Bayreuth Center for Colloids and Interfaces
- University of Bayreuth
- Bayreuth, Germany
| | - Marko Schmidt
- Inorganic Chemistry III and Bayreuth Center for Colloids and Interfaces
- University of Bayreuth
- Bayreuth, Germany
| | - Renée Siegel
- Inorganic Chemistry III and Bayreuth Center for Colloids and Interfaces
- University of Bayreuth
- Bayreuth, Germany
| | - Klaus Kreger
- Macromolecular Chemistry I
- Bayreuth Institute of Macromolecular Research and Bayreuth Center for Colloids and Interfaces
- University of Bayreuth
- Bayreuth, Germany
| | | | - Sandra Ganzleben
- Macromolecular Chemistry I
- Bayreuth Institute of Macromolecular Research and Bayreuth Center for Colloids and Interfaces
- University of Bayreuth
- Bayreuth, Germany
| | - Hans-Werner Schmidt
- Macromolecular Chemistry I
- Bayreuth Institute of Macromolecular Research and Bayreuth Center for Colloids and Interfaces
- University of Bayreuth
- Bayreuth, Germany
| | - Jürgen Senker
- Inorganic Chemistry III and Bayreuth Center for Colloids and Interfaces
- University of Bayreuth
- Bayreuth, Germany
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34
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Chierotti MR, Gobetto R, Nervi C, Bacchi A, Pelagatti P, Colombo V, Sironi A. Probing Hydrogen Bond Networks in Half-Sandwich Ru(II) Building Blocks by a Combined 1H DQ CRAMPS Solid-State NMR, XRPD, and DFT Approach. Inorg Chem 2013; 53:139-46. [DOI: 10.1021/ic401762z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Michele R. Chierotti
- Department of Chemistry and NIS
Centre of Excellence, University of Torino, Via P. Giuria 7, 10125 Torino, Italy
| | - Roberto Gobetto
- Department of Chemistry and NIS
Centre of Excellence, University of Torino, Via P. Giuria 7, 10125 Torino, Italy
| | - Carlo Nervi
- Department of Chemistry and NIS
Centre of Excellence, University of Torino, Via P. Giuria 7, 10125 Torino, Italy
| | - Alessia Bacchi
- Department of Chemistry, University of Parma, Parco Area
Scienze 17/A, 43124 Parma, Italy
| | - Paolo Pelagatti
- Department of Chemistry, University of Parma, Parco Area
Scienze 17/A, 43124 Parma, Italy
| | - Valentina Colombo
- Department of Chemistry, University of Milano, Via Golgi 19, 20133 Milano, Italy
| | - Angelo Sironi
- Department of Chemistry, University of Milano, Via Golgi 19, 20133 Milano, Italy
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35
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Araújo JMM, Pereiro AB, Canongia Lopes JN, Rebelo LPN, Marrucho IM. Hydrogen-Bonding and the Dissolution Mechanism of Uracil in an Acetate Ionic Liquid: New Insights from NMR Spectroscopy and Quantum Chemical Calculations. J Phys Chem B 2013; 117:4109-20. [DOI: 10.1021/jp400749j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- João M. M. Araújo
- Instituto de Tecnologia
Química
e Biológica, Universidade Nova de Lisboa, Apartado 127, 2780-157 Oeiras, Portugal
| | - Ana B. Pereiro
- Instituto de Tecnologia
Química
e Biológica, Universidade Nova de Lisboa, Apartado 127, 2780-157 Oeiras, Portugal
| | - José N. Canongia Lopes
- Instituto de Tecnologia
Química
e Biológica, Universidade Nova de Lisboa, Apartado 127, 2780-157 Oeiras, Portugal
- Centro de Química Estrutural, Instituto Superior Técnico, 1049-001 Lisboa,
Portugal
| | - Luís P. N. Rebelo
- Instituto de Tecnologia
Química
e Biológica, Universidade Nova de Lisboa, Apartado 127, 2780-157 Oeiras, Portugal
| | - Isabel M. Marrucho
- Instituto de Tecnologia
Química
e Biológica, Universidade Nova de Lisboa, Apartado 127, 2780-157 Oeiras, Portugal
- Departamento de
Química,
CICECO, Universidade de Aveiro, 3810-193
Aveiro, Portugal
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36
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Chierotti MR, Gobetto R. NMR crystallography: the use of dipolar interactions in polymorph and co-crystal investigation. CrystEngComm 2013. [DOI: 10.1039/c3ce41026a] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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37
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Chierotti MR, Gaglioti K, Gobetto R, Braga D, Grepioni F, Maini L. From molecular crystals to salt co-crystals of barbituric acid via the carbonate ion and an improvement of the solid state properties. CrystEngComm 2013. [DOI: 10.1039/c3ce40938d] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Vogt FG, Strohmeier M. 2D solid-state NMR analysis of inclusion in drug-cyclodextrin complexes. Mol Pharm 2012; 9:3357-74. [PMID: 23009557 DOI: 10.1021/mp300416w] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The solubility of drug molecules can often be improved through preparation and delivery of cyclodextrin (CD) inclusion complexes. These drug-oligosaccharide complexes can be prepared in solution and converted to the solid state via methods such as lyophilization and spray-drying, or they can be prepared directly from solids by a variety of methods. The development of drug-CD complexes as solids allows for potential advantages in dosage form design, such as the preparation of layered formulations, and it also can yield improvements in chemical and physical stability. 2D solid-state NMR (SSNMR) methods provide a direct way to probe drug-CD interactions in solid complexes through dipolar interactions between nuclei within the drug and CD molecules. In this study, 2D heteronuclear and homonuclear correlation SSNMR experiments involving (1)H, (13)C, (19)F, and (31)P nuclei are used to demonstrate the inclusion of drug within the CD cavity in a variety of powder samples. To illustrate the general applicability of the SSNMR approach presented, examples are shown for the drugs diflunisal, adefovir dipivoxil, voriconazole, dexamethasone, and prednisolone in complexes with α-CD, β-CD, and sulfobutylether-substituted β-CD. The quantitative analysis of included and free drug fractions in a solid drug-CD complex using SSNMR is also demonstrated. On the basis of these results, general approaches to the characterization of these materials using SSNMR are proposed.
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Affiliation(s)
- Frederick G Vogt
- Product Development, GlaxoSmithKline plc, 709 Swedeland Road, King of Prussia, Pennsylvania 19406, United States.
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39
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Mechanochemically induced disordered structures of vincamine: The different mediation of two cross-linked polymers. Int J Pharm 2012; 436:41-57. [DOI: 10.1016/j.ijpharm.2012.06.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Revised: 06/01/2012] [Accepted: 06/03/2012] [Indexed: 11/22/2022]
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40
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Ando S, Kikuchi J, Fujimura Y, Ida Y, Higashi K, Moribe K, Yamamoto K. Physicochemical characterization and structural evaluation of a specific 2:1 cocrystal of naproxen-nicotinamide. J Pharm Sci 2012; 101:3214-21. [PMID: 22517167 DOI: 10.1002/jps.23158] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2011] [Revised: 03/18/2012] [Accepted: 03/29/2012] [Indexed: 12/15/2022]
Abstract
Physicochemical characterization and structural evaluation of a 2:1 naproxen-nicotinamide cocrystal were performed. The 2:1 cocrystal showed rapid naproxen dissolution and less water vapor adsorption, indicating better pharmaceutical properties of naproxen. The unique 2:1 cocrystal formation was evaluated by solid-state nuclear magnetic resonance (NMR). The assignments of all H and (13) C peaks for naproxen and the cocrystal were performed using dipolar-insensitive nuclei enhanced by polarization transfer and (1) H-(13) C cross-polarization (CP)-heteronuclear correlation (HETCOR) NMR measurements. The (13) C chemical shift revealed that two naproxen molecules and one nicotinamide molecule existed in the asymmetric unit of the cocrystal. The (1) H chemical shifts indicated that the carboxylic group of the naproxen in the cocrystal was nonionized, and the CH-π interaction between naproxens was very strong. From the (1) H-(13) C CP-HETCOR NMR spectrum with contact time of 5 ms, two different synthons, carboxylic acid-amide and carboxylic acid-pyridine ring, were found between naproxen and nicotinamide. Single-crystal X-ray analysis, which supported the solid-state NMR results, clarified the geometry and intermolecular interactions in more detail. The structure is unique among pharmaceutical cocrystals because each carboxyl group of the two naproxens formed different intermolecular synthons.
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Affiliation(s)
- Shigeru Ando
- Innovative Drug Discovery Research Laboratories, Shionogi & Company, Ltd., Toyonaka-shi, Osaka 561-0825, Japan.
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41
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42
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Rossin A, Chierotti MR, Giambastiani G, Gobetto R, Peruzzini M. Amine-templated polymeric Mg formates: crystalline scaffolds exhibiting extensive hydrogen bonding. CrystEngComm 2012. [DOI: 10.1039/c2ce25048a] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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Fu W, Sun P. Solid state NMR study of hydrogen bonding, miscibility, and dynamics in multiphase polymer systems. ACTA ACUST UNITED AC 2011. [DOI: 10.1007/s11458-011-0254-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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44
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Araújo JMM, Ferreira R, Marrucho IM, Rebelo LPN. Solvation of Nucleobases in 1,3-Dialkylimidazolium Acetate Ionic Liquids: NMR Spectroscopy Insights into the Dissolution Mechanism. J Phys Chem B 2011; 115:10739-49. [DOI: 10.1021/jp203282k] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- João M. M. Araújo
- Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Apartado 127, 2780-157 Oeiras, Portugal
| | - Rui Ferreira
- Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Apartado 127, 2780-157 Oeiras, Portugal
| | - Isabel M. Marrucho
- Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Apartado 127, 2780-157 Oeiras, Portugal
| | - Luís P. N. Rebelo
- Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Apartado 127, 2780-157 Oeiras, Portugal
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45
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Schmidt MU, Brüning J, Glinnemann J, Hützler MW, Mörschel P, Ivashevskaya SN, van de Streek J, Braga D, Maini L, Chierotti MR, Gobetto R. The Thermodynamically Stable Form of Solid Barbituric Acid: The Enol Tautomer. Angew Chem Int Ed Engl 2011; 50:7924-6. [DOI: 10.1002/anie.201101040] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Indexed: 11/06/2022]
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46
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Schmidt MU, Brüning J, Glinnemann J, Hützler MW, Mörschel P, Ivashevskaya SN, van de Streek J, Braga D, Maini L, Chierotti MR, Gobetto R. Die thermodynamisch stabile Form von fester Barbitursäure: das Enol-Tautomer. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201101040] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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47
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Hasa D, Voinovich D, Perissutti B, Grassi M, Bonifacio A, Sergo V, Cepek C, Chierotti MR, Gobetto R, Dall'Acqua S, Invernizzi S. Enhanced oral bioavailability of vinpocetine through mechanochemical salt formation: physico-chemical characterization and in vivo studies. Pharm Res 2011; 28:1870-83. [PMID: 21424156 DOI: 10.1007/s11095-011-0415-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2011] [Accepted: 03/01/2011] [Indexed: 10/18/2022]
Abstract
PURPOSE Enhancing oral bioavailability of vinpocetine by forming its amorphous citrate salt through a solvent-free mechanochemical process, in presence of micronised crospovidone and citric acid. METHODS The impact of formulation and process variables (amount of polymer and citric acid, and milling time) on vinpocetine solubilization kinetics from the coground was studied through an experimental design. The best performing samples were characterized by employing a multidisciplinary approach, involving Differential scanning calorimetry, X-ray diffraction, Raman imaging/spectroscopy, X-ray photoelectron spectroscopy, solid-state NMR spectroscopy, porosimetry and in vivo studies on rats to ascertain the salt formation, their solid-state characteristics and oral bioavailability in comparison to vinpocetine citrate salt (Oxopocetine(®)). RESULTS The analyses attested that the mechanochemical process is a viable way to produce in absence of solvents vinpocetine citrate salt in an amorphous state. CONCLUSION From the in vivo studies on rats the obtained salt was four times more bioavailable than its physical mixture and bioequivalent to the commercial salt produced by conventional synthetic process implying the use of solvent.
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Affiliation(s)
- Dritan Hasa
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, P. le Europa 1, 34127 Trieste, Italy
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48
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Khan M, Enkelmann V, Brunklaus G. Heterosynthon mediated tailored synthesis of pharmaceutical complexes: a solid-state NMR approach. CrystEngComm 2011. [DOI: 10.1039/c0ce00657b] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Nowicka K, Bujacz A, Paluch P, Sobczuk A, Jeziorna A, Ciesielski W, Bujacz GD, Jurczak J, Potrzebowski MJ. Study of host–guest interactions in benzodiazacoronands by means of solid state NMR spectroscopy, X-ray diffraction and quantum mechanical computations. Phys Chem Chem Phys 2011; 13:6423-33. [DOI: 10.1039/c0cp02401e] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Songkram C, Ohta K, Yamaguchi K, Pichierri F, Endo Y. Conformational Control of Benzyl-o-carboranylbenzene Derivatives and Molecular Encapsulation of Acetone in the Dynamically Formed Space of 1,3,5-Tris(2-benzyl-o-carboran-1-yl)benzene. Inorg Chem 2010; 49:11174-83. [DOI: 10.1021/ic101862n] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chalermkiat Songkram
- Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Kiminori Ohta
- Faculty of Pharmaceutical Sciences, Tohoku Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai 981-8558, Japan
| | - Kentaro Yamaguchi
- Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, 1314-1 Shido, Sanuki, Kagawa 769-2193, Japan
| | - Fabio Pichierri
- G-COE Laboratory, Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, Aoba-yama 6-6-07, Sendai 980-8579, Japan
| | - Yasuyuki Endo
- Faculty of Pharmaceutical Sciences, Tohoku Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai 981-8558, Japan
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