1
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Huang Z, Li P, Lei Y, Deng XY, Chen YN, Tian S, Pan X, Lei X, Song C, Zheng Y, Wang JY, Zhang Z, Lei T. Azonia-Naphthalene: A Cationic Hydrophilic Building Block for Stable N-Type Organic Mixed Ionic-Electronic Conductors. Angew Chem Int Ed Engl 2024; 63:e202313260. [PMID: 37938169 DOI: 10.1002/anie.202313260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/16/2023] [Accepted: 11/08/2023] [Indexed: 11/09/2023]
Abstract
Conjugated polymers that can efficiently transport both ionic and electronic charges have broad applications in next-generation optoelectronic, bioelectronic, and energy storage devices. To date, almost all the conjugated polymers have hydrophobic backbones, which impedes efficient ion diffusion/transport in aqueous media. Here, we design and synthesize a novel hydrophilic polymer building block, 4a-azonia-naphthalene (AN), drawing inspiration from biological systems. Because of the strong electron-withdrawing ability of AN, the AN-based polymers show typical n-type charge transport behaviors. We find that cationic aromatics exhibit strong cation-π interactions, leading to smaller π-π stacking distance, interesting ion diffusion behavior, and good morphology stability. Additionally, AN enhances the hydrophilicity and ionic-electronic coupling of the polymer, which can help to improve ion diffusion/injection speed, and operational stability of organic electrochemical transistors (OECTs). The integration of cationic building blocks will undoubtedly enrich the material library for high-performance n-type conjugated polymers.
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Affiliation(s)
- Zhen Huang
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, School of Materials Science and Engineering, Peking University, Beijing, 100871, China
- College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Peiyun Li
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, School of Materials Science and Engineering, Peking University, Beijing, 100871, China
| | - Yuqiu Lei
- College of Engineering, Peking University, Beijing, 100871, China
| | - Xin-Yu Deng
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, School of Materials Science and Engineering, Peking University, Beijing, 100871, China
| | - Yu-Nan Chen
- College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Shuangyan Tian
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, School of Materials Science and Engineering, Peking University, Beijing, 100871, China
| | - Xiran Pan
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, School of Materials Science and Engineering, Peking University, Beijing, 100871, China
| | - Xun Lei
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, School of Materials Science and Engineering, Peking University, Beijing, 100871, China
| | - Cheng Song
- College of Engineering, Peking University, Beijing, 100871, China
| | - Yuting Zheng
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, School of Materials Science and Engineering, Peking University, Beijing, 100871, China
| | - Jie-Yu Wang
- College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Zhi Zhang
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, School of Materials Science and Engineering, Peking University, Beijing, 100871, China
| | - Ting Lei
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, School of Materials Science and Engineering, Peking University, Beijing, 100871, China
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2
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Wang P, Raja A, Luscombe VB, Bataille CJR, Lucy D, Rogga VV, Greaves DR, Russell AJ. Development of Highly Potent, G-Protein Pathway Biased, Selective, and Orally Bioavailable GPR84 Agonists. J Med Chem 2024; 67:110-137. [PMID: 38146625 PMCID: PMC10788923 DOI: 10.1021/acs.jmedchem.3c00951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 11/06/2023] [Accepted: 11/20/2023] [Indexed: 12/27/2023]
Abstract
Orphan G-protein-coupled receptor 84 (GPR84) is a receptor that has been linked to cancer, inflammatory, and fibrotic diseases. We have reported DL-175 as a biased agonist at GPR84 which showed differential signaling via Gαi/cAMP and β-arrestin, but which is rapidly metabolized. Herein, we describe an optimization of DL-175 through a systematic structure-activity relationship (SAR) analysis. This reveals that the replacement of the naphthalene group improved metabolic stability and the addition of a 5-hydroxy substituent to the pyridine N-oxide group, yielding compounds 68 (OX04528) and 69 (OX04529), enhanced the potency for cAMP signaling by 3 orders of magnitude to low picomolar values. Neither compound showed detectable effects on β-arrestin recruitment up to 80 μM. Thus, the new GPR84 agonists 68 and 69 displayed excellent potency, high G-protein signaling bias, and an appropriate in vivo pharmacokinetic profile that will allow investigation of GPR84 biased agonist activity in vivo.
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Affiliation(s)
- Pinqi Wang
- Department
of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K.
- Department
of Pharmacology, University of Oxford, Mansfield Road, Oxford OX1 3QT, U.K.
| | - Arun Raja
- Department
of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K.
- Department
of Pharmacology, University of Oxford, Mansfield Road, Oxford OX1 3QT, U.K.
| | - Vincent B. Luscombe
- Sir
William Dunn School of Pathology, University
of Oxford, South Parks Road, Oxford OX1 3RE, U.K.
| | - Carole J. R. Bataille
- Department
of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K.
- Department
of Pharmacology, University of Oxford, Mansfield Road, Oxford OX1 3QT, U.K.
| | - Daniel Lucy
- Department
of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K.
- Sir
William Dunn School of Pathology, University
of Oxford, South Parks Road, Oxford OX1 3RE, U.K.
| | - Vanessa V. Rogga
- Department
of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K.
| | - David R. Greaves
- Sir
William Dunn School of Pathology, University
of Oxford, South Parks Road, Oxford OX1 3RE, U.K.
| | - Angela J. Russell
- Department
of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K.
- Department
of Pharmacology, University of Oxford, Mansfield Road, Oxford OX1 3QT, U.K.
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3
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Clerc M, Sandlass S, Rifaie-Graham O, Peterson JA, Bruns N, Read de Alaniz J, Boesel LF. Visible light-responsive materials: the (photo)chemistry and applications of donor-acceptor Stenhouse adducts in polymer science. Chem Soc Rev 2023; 52:8245-8294. [PMID: 37905554 PMCID: PMC10680135 DOI: 10.1039/d3cs00508a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Indexed: 11/02/2023]
Abstract
Donor-acceptor Stenhouse adduct (DASA) photoswitches have gained a lot of attention since their discovery in 2014. Their negative photochromism, visible light absorbance, synthetic tunability, and the large property changes between their photoisomers make them attractive candidates over other commonly used photoswitches for use in materials with responsive or adaptive properties. The development of such materials and their translation into advanced technologies continues to widely impact forefront materials research, and DASAs have thus attracted considerable interest in the field of visible-light responsive molecular switches and dynamic materials. Despite this interest, there have been challenges in understanding their complex behavior in the context of both small molecule studies and materials. Moreover, incorporation of DASAs into polymers can be challenging due to their incompatibility with the conditions for most common polymerization techniques. In this review, therefore, we examine and critically discuss the recent developments and challenges in the field of DASA-containing polymers, aiming at providing a better understanding of the interplay between the properties of both constituents (matrix and photoswitch). The first part summarizes current understanding of DASA design and switching properties. The second section discusses strategies of incorporation of DASAs into polymers, properties of DASA-containing materials, and methods for studying switching of DASAs in materials. We also discuss emerging applications for DASA photoswitches in polymeric materials, ranging from light-responsive drug delivery systems, to photothermal actuators, sensors and photoswitchable surfaces. Last, we summarize the current challenges in the field and venture on the steps required to explore novel systems and expand both the functional properties and the application opportunities of DASA-containing polymers.
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Affiliation(s)
- Michèle Clerc
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biomimetic Membranes and Textiles, 9014 St. Gallen, Switzerland.
- University of Fribourg, Department of Chemistry, 1700 Fribourg, Switzerland
- Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow G1 1XL, UK
- Swiss National Center of Competence in Research Bio-Inspired Materials, Switzerland
| | - Sara Sandlass
- Department of Chemical Engineering, University of California, Santa Barbara, California 93106, USA
| | - Omar Rifaie-Graham
- Department of Chemistry, School of Physical and Chemical Sciences, Queen Mary University of London, London E1 4NS, UK
| | - Julie A Peterson
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, USA.
| | - Nico Bruns
- Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow G1 1XL, UK
- Swiss National Center of Competence in Research Bio-Inspired Materials, Switzerland
- Department of Chemistry, Technical University of Darmstadt, 64287 Darmstadt, Germany.
| | - Javier Read de Alaniz
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, USA.
| | - Luciano F Boesel
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biomimetic Membranes and Textiles, 9014 St. Gallen, Switzerland.
- Swiss National Center of Competence in Research Bio-Inspired Materials, Switzerland
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Zhanadilov O, Kim HJ, Lai HJ, Jiang JC, Konarov A, Mentbayeva A, Bakenov Z, Sohn KS, Kaghazchi P, Myung ST. Exploiting High-Voltage Stability of Dual-Ion Aqueous Electrolyte Reinforced by Incorporation of Fiberglass into Zwitterionic Hydrogel Electrolyte. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2302973. [PMID: 37377256 DOI: 10.1002/smll.202302973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 06/18/2023] [Indexed: 06/29/2023]
Abstract
Rechargeable zinc aqueous batteries are key alternatives for replacing toxic, flammable, and expensive lithium-ion batteries in grid energy storage systems. However, these systems possess critical weaknesses, including the short electrochemical stability window of water and intrinsic fast zinc dendrite growth. Hydrogel electrolytes provide a possible solution, especially cross-linked zwitterionic polymers that possess strong water retention ability and high ionic conductivity. Herein, an in situ prepared fiberglass-incorporated dual-ion zwitterionic hydrogel electrolyte with an ionic conductivity of 24.32 mS cm-1 , electrochemical stability window up to 2.56 V, and high thermal stability is presented. By incorporating this hydrogel electrolyte of zinc and lithium triflate salts, a zinc//LiMn0.6 Fe0.4 PO4 pouch cell delivers a reversible capacity of 130 mAh g-1 in the range of 1.0-2.2 V at 0.1C, and the test at 2C provides an initial capacity of 82.4 mAh g-1 with 71.8% capacity retention after 1000 cycles with a coulombic efficiency of 97%. Additionally, the pouch cell is fire resistant and remains safe after cutting and piercing.
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Affiliation(s)
- Orynbay Zhanadilov
- Hybrid Materials Research Center, Department of Nanotechnology and Advanced Materials Engineering & Sejong Battery Institute, Sejong University, Seoul, 05006, South Korea
| | - Hee Jae Kim
- Hybrid Materials Research Center, Department of Nanotechnology and Advanced Materials Engineering & Sejong Battery Institute, Sejong University, Seoul, 05006, South Korea
| | - Hou-Jen Lai
- Computational and Theoretical Chemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 106, Taiwan
| | - Jyh-Chiang Jiang
- Computational and Theoretical Chemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 106, Taiwan
| | - Aishuak Konarov
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Kabanbay Batyr Ave. 53, Astana, 010000, Kazakhstan
| | - Almagul Mentbayeva
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Kabanbay Batyr Ave. 53, Astana, 010000, Kazakhstan
| | - Zhumabay Bakenov
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Kabanbay Batyr Ave. 53, Astana, 010000, Kazakhstan
| | - Kee-Sun Sohn
- Hybrid Materials Research Center, Department of Nanotechnology and Advanced Materials Engineering & Sejong Battery Institute, Sejong University, Seoul, 05006, South Korea
| | - Payam Kaghazchi
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), 52425, Jülich, Germany
| | - Seung-Taek Myung
- Hybrid Materials Research Center, Department of Nanotechnology and Advanced Materials Engineering & Sejong Battery Institute, Sejong University, Seoul, 05006, South Korea
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5
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Suekuni MT, Allgeier AM. Correlating Surface Chemistry to Surface Relaxivity via TD-NMR Studies of Polymer Particle Suspensions. JACS AU 2023; 3:2826-2834. [PMID: 37885588 PMCID: PMC10598564 DOI: 10.1021/jacsau.3c00384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 08/29/2023] [Accepted: 09/19/2023] [Indexed: 10/28/2023]
Abstract
This study elucidates the impact of surface chemistry on solvent spin relaxation rates via time-domain nuclear magnetic resonance (TD-NMR). Suspensions of polymer particles of known surface chemistry were prepared in water and n-decane. Trends in solvent transverse relaxation rates demonstrated that surface polar functional groups induce stronger interactions with water with the opposite effect for n-decane. NMR surface relaxivities (ρ2) calculated for the solid-fluid pairs ranged from 0.4 to 8.0 μm s-1 and 0.3 to 5.4 μm s-1 for water and n-decane, respectively. The values of ρ2 for water displayed an inverse relationship to contact angle measurements on surfaces of similar composition, supporting the correlation of the TD-NMR output with polymer wettability. Surface composition, i.e., H/C ratios and heteroatom content, mainly contributed to the observed surface relaxivities compared to polymer % crystallinity and mean particle sizes via multiple linear regression. Ultimately, these findings emphasize the significance of surface chemistry in TD-NMR measurements and provide a quantitative foundation for future research involving TD-NMR investigations of wetted surface area and fluid-surface interactions. A comprehensive understanding of the factors influencing solvent relaxation in porous media can aid the optimization of industrial processes and the design of materials with enhanced performance.
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Affiliation(s)
- Murilo T Suekuni
- Department of Chemical and Petroleum Engineering, The Center for Environmentally Beneficial Catalysis, and The Institute for Sustainable Engineering, University of Kansas, Lawrence, Kansas 66045, United States
| | - Alan M Allgeier
- Department of Chemical and Petroleum Engineering, The Center for Environmentally Beneficial Catalysis, and The Institute for Sustainable Engineering, University of Kansas, Lawrence, Kansas 66045, United States
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6
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Zhu H, Yuan B, Li Y. Title Preparation and Desalination of Semi-Aromatic Polyamide Reverse Osmosis Membranes (ROMs). Polymers (Basel) 2023; 15:polym15071683. [PMID: 37050299 PMCID: PMC10096747 DOI: 10.3390/polym15071683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 03/23/2023] [Accepted: 03/25/2023] [Indexed: 03/31/2023] Open
Abstract
Reverse osmosis membrane (ROM) technology has a series of advantages, such as a simple process, no secondary pollution, high efficiency, energy saving, environmental protection, and good separation and purification effects. High-performance semi-aromatic polyamide reverse osmosis membranes (ROMs) were prepared by interfacial polymerization (IP) of novel cyclopentanecarbonyl chloride (CPTC) and m-phenylenediamine (MPD) monomers. The surface morphology, hydrophilicity and charge of the ROMs were characterized by field-emission scanning electron microscopy (SEM), a contact angle tester and a solid-surface zeta potential analyzer. The effects of CPTC concentration, MPD concentration, oil-phase solvent type, IP reaction time and additive concentration on the performance of semi-aromatic polyamide ROMs were studied. SEM morphology characterization showed that the surface of the prepared polyamide ROMs presented a multinodal structure. The performance test showed that when the concentration of MPD in the aqueous phase was 2.5 wt.%, the concentration of sodium dodecylbenzene sulfonate (SDBS) was 0.2%, the residence time in the aqueous phase was 2 min, the concentration of CPTC/cyclohexane in the oil phase was 0.13 wt.%, the IP reaction was 20 s, the NaCl rejection rate of the semi-aromatic polyamide ROM was 98.28% and the flux was 65.38 L/m2·h, showing good desalination performance. Compared with an NF 90 commercial membrane, it has a good anti-BSA pollution ability.
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7
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Kenney DH, Paffenroth RC, Timko MT, Teixeira AR. Dimensionally reduced machine learning model for predicting single component octanol-water partition coefficients. J Cheminform 2023; 15:9. [PMID: 36658606 PMCID: PMC9854055 DOI: 10.1186/s13321-022-00660-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 11/25/2022] [Indexed: 01/20/2023] Open
Abstract
MF-LOGP, a new method for determining a single component octanol-water partition coefficients ([Formula: see text]) is presented which uses molecular formula as the only input. Octanol-water partition coefficients are useful in many applications, ranging from environmental fate and drug delivery. Currently, partition coefficients are either experimentally measured or predicted as a function of structural fragments, topological descriptors, or thermodynamic properties known or calculated from precise molecular structures. The MF-LOGP method presented here differs from classical methods as it does not require any structural information and uses molecular formula as the sole model input. MF-LOGP is therefore useful for situations in which the structure is unknown or where the use of a low dimensional, easily automatable, and computationally inexpensive calculations is required. MF-LOGP is a random forest algorithm that is trained and tested on 15,377 data points, using 10 features derived from the molecular formula to make [Formula: see text] predictions. Using an independent validation set of 2713 data points, MF-LOGP was found to have an average [Formula: see text] = 0.77 ± 0.007, [Formula: see text] = 0.52 ± 0.003, and [Formula: see text] = 0.83 ± 0.003. This performance fell within the spectrum of performances reported in the published literature for conventional higher dimensional models ([Formula: see text] = 0.42-1.54, [Formula: see text] = 0.09-1.07, and [Formula: see text] = 0.32-0.95). Compared with existing models, MF-LOGP requires a maximum of ten features and no structural information, thereby providing a practical and yet predictive tool. The development of MF-LOGP provides the groundwork for development of more physical prediction models leveraging big data analytical methods or complex multicomponent mixtures.
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Affiliation(s)
- David H Kenney
- Department of Chemical Engineering, Worcester Polytechnic Institute, Worcester, MA, 01609, USA
| | - Randy C Paffenroth
- Department of Mathematical Sciences, Worcester Polytechnic Institute, Worcester, MA, 01609, USA
| | - Michael T Timko
- Department of Chemical Engineering, Worcester Polytechnic Institute, Worcester, MA, 01609, USA
| | - Andrew R Teixeira
- Department of Chemical Engineering, Worcester Polytechnic Institute, Worcester, MA, 01609, USA.
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8
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Fan W, Zhang W, Allen S, Alshehri S, Muilenburg KM, Zheng C, Garrison JC. Examination of Charge Modifications of an Endolysosomal Trapping Inhibitor in an Antagonistic NTSR1-Targeted Construct for Colon Cancer. Bioconjug Chem 2022; 33:1363-1376. [PMID: 35793523 PMCID: PMC9941984 DOI: 10.1021/acs.bioconjchem.2c00214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Many low-molecular weight targeted radiotherapeutics (TRTs) are capable of rapidly achieving exceptional tumor to non-target ratios shortly after administration. However, the low tumor residence time of many TRTs limits therapeutic dose delivery and has become the Achilles heel to their clinical translation. To combat the tumor efflux of these otherwise promising agents, we have previously presented a strategy of equipping low-molecular weight TRTs with irreversible cysteine cathepsin inhibitors (e.g., E-64 analogues). These inhibitors are capable of forming irreversible adducts with cysteine proteases within the endolysosomal compartments of cells. Using these endolysosomal trapping agents (ETs), the receptor-targeted constructs are able to increase tumor retention and, thus, deliverable therapeutic doses. In this study, we examine this approach in the development of agents targeting the neurotensin receptor subtype 1 (NTSR1), a receptor overexpressed in numerous cancers. Using an antagonistic NTSR1-targeting vector, we explore the impact of charge modification of the ETs on the in vitro and in vivo biological performance of the constructs using HT-29 colon cancer models. Four ETs (based on the epoxysuccinyl peptide E-64) with various charge states were synthesized and incorporated into the structures of the NTSR1-targeted antagonist. These four 177Lu-labeled, ET-enhanced, NTSR1-targeted agents (177Lu-NA-ET1-4), along with the structurally analogous 177Lu-3BP-227, currently in clinical trials, underwent a battery of in vitro assays using HT-29 xenograft colon cancer cells to examine their NTSR1 binding, internalization and efflux, inhibition, and adduct formation properties. The biodistribution profile of these constructs was studied in an HT-29 mouse model. Charge modification of the terminal carboxylic acid and arginine of the ETs had deleterious effects on inhibition kinetics and in vitro adduct formation. Contrastingly, deletion of the arginine resulted in a modest increase in inhibition kinetics. Incorporation of ETs into the NTSR1-targeted agents was well-tolerated with minimal impact on the in vivo NTSR1 targeting but resulted in increased renal uptake. This study demonstrates that the ETs can be successfully incorporated into antagonistic NTSR1-targeted constructs without compromising their adduct formation capabilities. Based on these results, further exploration of the endolysosomal trapping approach is warranted in NTSR1- and other receptor-targeted antagonistic constructs.
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Affiliation(s)
- Wei Fan
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE,Center for Drug Delivery and Nanomedicine, University of Nebraska Medical Center, Omaha, NE
| | - Wenting Zhang
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE,Center for Drug Delivery and Nanomedicine, University of Nebraska Medical Center, Omaha, NE
| | - Sadie Allen
- Eppley Institute for Cancer Research, University of Nebraska Medical Center, Omaha, NE
| | - Sameer Alshehri
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE,Center for Drug Delivery and Nanomedicine, University of Nebraska Medical Center, Omaha, NE
| | - Kathryn M Muilenburg
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE,Center for Drug Delivery and Nanomedicine, University of Nebraska Medical Center, Omaha, NE
| | - Cheng Zheng
- Department of Biostatistics, University of Nebraska Medical Center, Omaha, NE
| | - Jered C. Garrison
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE,Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE,Center for Drug Delivery and Nanomedicine, University of Nebraska Medical Center, Omaha, NE,Eppley Institute for Cancer Research, University of Nebraska Medical Center, Omaha, NE,Corresponding Author Jered C. Garrison, Tel: +01 4025593453.
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9
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Meena M, Kerketta A, Tripathi M, Roy P, Jacob J. Thermally stable poly(urethane‐imide)s with enhanced hydrophilicity for waterproof‐breathable textile coatings. J Appl Polym Sci 2022. [DOI: 10.1002/app.52508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mahipal Meena
- Centre for Fire, Explosive and Environment Safety DRDO Delhi India
- Department of Materials Science and Engineering Indian Institute of Technology Delhi India
| | - Anjlina Kerketta
- Centre for Fire, Explosive and Environment Safety DRDO Delhi India
| | | | - Prasun Roy
- Centre for Fire, Explosive and Environment Safety DRDO Delhi India
| | - Josemon Jacob
- Department of Materials Science and Engineering Indian Institute of Technology Delhi India
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10
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Razaque R, Raza AR, Irshad M, Rubab SL, Batool S, Nisar B, Akram Z, Akhtar MT, Qadir R, Siddique AB, Siddique F, Saadia M. Synthesis and evaluation of 2-phenylamino-1,4-naphthoquinones derivatives as potential hypoglycaemic agents. BRAZ J BIOL 2022; 84:e254234. [PMID: 35293531 DOI: 10.1590/1519-6984.254234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 12/23/2021] [Indexed: 11/21/2022] Open
Abstract
Due to the severe side effects revealed by most of the currently used antidiabetic medicines, search for finding new and safe drugs to manage diabetes is continued. Naphthoquinones possessing strong antioxidant properties have been employed as candidates for diabetes therapy. Present study is aimed at finding the antioxidant and hypoglycaemic potential of some novel derivatives of 2-phenylamino-1,4-naphthoquinones (PAN) including chloro, nitro, methyl and bromo (5a-d) derivatives synthesized by single pot experiment. Product crystals were purified by TLC and characterized by FT-IR. The antioxidant potential of the compounds was assayed through DPPH radical scavenging and reducing power activities noted as UV-vis. absorbance. The DPPH assay has showed the powerful antioxidant activity of nitro and bromo derivatives, while the nitro derivative showed the significant reduction potential towards FRAP assay. Hypoglycaemic potential of the compounds was studied in rat animal model. All synthesized compounds revealed better hypoglycaemic activity; however, the chloro-derivative exhibited the more potent hypoglycaemic activity showing about 43% reduction in the mean blood glucose levels of the treated animals. As the bioreduction of naphthoquinones may be influenced by changing its redox properties, it has been noticed that the e-donating resonance effect (+R) of 'chloro' group has shown the significant effects on biological activity through stabalization of its imine form which limits the potential of generation of free radicals during bioreduction of quinones and thus has been proposed as the reason of its hypoglycaemic activity. Future studies employing the properties of e-donating groups of PAN may optimize the drug-receptor interaction for better drug designing and drug development strategies against diabetes and also for the clinical trials.
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Affiliation(s)
- R Razaque
- University of Sargodha, Institute of Chemistry, Sargodha, Pakistan
| | - A R Raza
- University of Sargodha, Institute of Chemistry, Sargodha, Pakistan
| | - M Irshad
- University of Education Lahore, Department of Chemistry, Division of Science and Technology, Lahore, Pakistan
| | - S L Rubab
- University of Education, Department of Chemistry, Jauharabad Campus, Jauharabad, Pakistan
| | - S Batool
- University of Sargodha, Department of Zoology, Sargodha, Pakistan
| | - B Nisar
- University of Lahore, Department of Chemistry, Sargodha Campus, Sargodha, Pakistan
| | - Z Akram
- Griffith University, Health Institute Queensland, School of Medical Sciences, Gold Cost Campus, Queensland, Australia
| | - M T Akhtar
- University of Sargodha, Institute of Chemistry, Sargodha, Pakistan
| | - R Qadir
- University of Sargodha, Institute of Chemistry, Sargodha, Pakistan
| | | | - Farzana Siddique
- Insititute of Food Science and Nutrition, University of Sargodha, Sargodha, Pakistan
| | - M Saadia
- Ghazi University, Department of Chemistry, Dera Ghazi Khan, Pakistan
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11
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Lee HJ, Joyce R, Lee J. Liquid Polymer/Metallic Salt-Based Stretchable Strain Sensor to Evaluate Fruit Growth. ACS APPLIED MATERIALS & INTERFACES 2022; 14:5983-5994. [PMID: 35043613 DOI: 10.1021/acsami.1c21376] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Conventional methods for measuring the various dimensions of a fruit vary from vernier calipers to machine vision systems. This accounts for system bulkiness, high installation charges, and miscellaneous difficulties in continuous and precise monitoring. Considering the limitations, this paper reveals an inventive liquid-state stretchable strain sensor by incorporating poly(ethylene glycol) (PEG) and silver nitrate into an indigenous transparent polymer band. The combination of poly(dimethylsiloxane) (PDMS) and Ecoflex having an optimal mixing ratio (20:80) realized the equilibrium between a large strain, low stress, and less stickiness. The inclusion of a liquid polymer promoted high viscosity and chemical stability, while the addition of a metallic salt enhanced the electrical conductivity of the sensor. The correlation between strain and resistance showed high sensitivity and good repeatability of the PEG-silver nitrate composite. Linear resistance changes were noted with high coefficients of determination (R2 > 0.99) at least up to the strain of 30%. The performance test as a dendrometer on fruits of two different species demonstrated excellent stability of the sensor with increasing ratios from 1.7 to 3.9 kΩ/mm. This tunable elastic band sensor opened up a route toward long-term evaluation-targeted versatile applications such as fruit growth monitoring.
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Affiliation(s)
- Hyun Jae Lee
- Department of Mechanical Engineering, College of Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Robin Joyce
- Department of Mechanical Engineering, College of Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Junghoon Lee
- Department of Mechanical Engineering, College of Engineering, Seoul National University, Seoul 08826, Republic of Korea
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12
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Esteves C, Palma SICJ, Costa HMA, Alves C, Santos GMC, Ramou E, Carvalho AL, Alves V, Roque ACA. Tackling Humidity with Designer Ionic Liquid-Based Gas Sensing Soft Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2107205. [PMID: 34873762 PMCID: PMC7613046 DOI: 10.1002/adma.202107205] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 11/12/2021] [Indexed: 05/13/2023]
Abstract
Relative humidity is simultaneously a sensing target and a contaminant in gas and volatile organic compound (VOC) sensing systems, where strategies to control humidity interference are required. An unmet challenge is the creation of gas-sensitive materials where the response to humidity is controlled by the material itself. Here, humidity effects are controlled through the design of gelatin formulations in ionic liquids without and with liquid crystals as electrical and optical sensors, respectively. In this design, the anions [DCA]- and [Cl]- of room temperature ionic liquids from the 1-butyl-3-methylimidazolium family tailor the response to humidity and, subsequently, sensing of VOCs in dry and humid conditions. Due to the combined effect of the materials formulations and sensing mechanisms, changing the anion from [DCA]- to the much more hygroscopic [Cl]- , leads to stronger electrical responses and much weaker optical responses to humidity. Thus, either humidity sensors or humidity-tolerant VOC sensors that do not require sample preconditioning or signal processing to correct humidity impact are obtained. With the wide spread of 3D- and 4D-printing and intelligent devices, the monitoring and tuning of humidity in sustainable biobased materials offers excellent opportunities in e-nose sensing arrays and wearable devices compatible with operation at room conditions.
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Affiliation(s)
- Carina Esteves
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University of Lisbon, Caparica, 2829-516, Portugal
- UCIBIO - Applied Molecular Biosciences Unit, Department of Chemistry, NOVA School of Science and Technology, NOVA University of Lisbon, Caparica, 2829-516, Portugal
| | - Susana I C J Palma
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University of Lisbon, Caparica, 2829-516, Portugal
- UCIBIO - Applied Molecular Biosciences Unit, Department of Chemistry, NOVA School of Science and Technology, NOVA University of Lisbon, Caparica, 2829-516, Portugal
| | - Henrique M A Costa
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University of Lisbon, Caparica, 2829-516, Portugal
- UCIBIO - Applied Molecular Biosciences Unit, Department of Chemistry, NOVA School of Science and Technology, NOVA University of Lisbon, Caparica, 2829-516, Portugal
| | - Cláudia Alves
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University of Lisbon, Caparica, 2829-516, Portugal
- UCIBIO - Applied Molecular Biosciences Unit, Department of Chemistry, NOVA School of Science and Technology, NOVA University of Lisbon, Caparica, 2829-516, Portugal
| | - Gonçalo M C Santos
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University of Lisbon, Caparica, 2829-516, Portugal
- UCIBIO - Applied Molecular Biosciences Unit, Department of Chemistry, NOVA School of Science and Technology, NOVA University of Lisbon, Caparica, 2829-516, Portugal
| | - Efthymia Ramou
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University of Lisbon, Caparica, 2829-516, Portugal
- UCIBIO - Applied Molecular Biosciences Unit, Department of Chemistry, NOVA School of Science and Technology, NOVA University of Lisbon, Caparica, 2829-516, Portugal
| | - Ana Luísa Carvalho
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University of Lisbon, Caparica, 2829-516, Portugal
- UCIBIO - Applied Molecular Biosciences Unit, Department of Chemistry, NOVA School of Science and Technology, NOVA University of Lisbon, Caparica, 2829-516, Portugal
| | - Vitor Alves
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University of Lisbon, Caparica, 2829-516, Portugal
- UCIBIO - Applied Molecular Biosciences Unit, Department of Chemistry, NOVA School of Science and Technology, NOVA University of Lisbon, Caparica, 2829-516, Portugal
| | - Ana C A Roque
- LEAF - Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia, Universidade de Lisboa, Lisboa, 1349-017, Portugal
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13
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Khalili MH, Afsar A, Zhang R, Wilson S, Dossi E, Goel S, Impey SA, Aria AI. Thermal response of multi-layer UV crosslinked PEGDA hydrogels. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2021.109805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Bourassi M, Kárászová M, Pasichnyk M, Zazpe R, Herciková J, Fíla V, Macak JM, Gaálová J. Removal of Ibuprofen from Water by Different Types Membranes. Polymers (Basel) 2021; 13:polym13234082. [PMID: 34883586 PMCID: PMC8659068 DOI: 10.3390/polym13234082] [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: 10/14/2021] [Revised: 11/16/2021] [Accepted: 11/21/2021] [Indexed: 11/16/2022] Open
Abstract
Ibuprofen separation from water by adsorption and pertraction processes has been studied, comparing 16 different membranes. Tailor-made membranes based on Matrimid, Ultem, and diaminobenzene/diaminobenzoic acid with various contents of zeolite and graphene oxide, have been compared to the commercial polystyrene, polypropylene, and polydimethylsiloxane polymeric membranes. Experimental results revealed lower ibuprofen adsorption onto commercial membranes than onto tailor-made membranes (10–15% compared to 50–70%). However, the mechanical stability of commercial membranes allowed the pertraction process application, which displayed a superior quantity of ibuprofen eliminated. Additionally, the saturation of the best-performing commercial membrane, polydimethylsiloxane, was notably prevented by atomic layer deposition of (3-aminopropyl)triethoxysilane.
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Affiliation(s)
- Mahdi Bourassi
- Institute of Chemical Process Fundamentals of the CAS, v.v.i., Rozvojova 135, 165 00 Prague, Czech Republic; (M.B.); (M.K.); (M.P.)
- Institute for Environmental Studies, Charles University, Benátská 2, 128 01 Prague 2, Czech Republic
- Institut de Chimie des Milieux et Matériaux de Poitiers, 4 Rue Michel Brunet, TSA 51106, CEDEX 9, 86073 Poitiers, France
| | - Magda Kárászová
- Institute of Chemical Process Fundamentals of the CAS, v.v.i., Rozvojova 135, 165 00 Prague, Czech Republic; (M.B.); (M.K.); (M.P.)
| | - Mariia Pasichnyk
- Institute of Chemical Process Fundamentals of the CAS, v.v.i., Rozvojova 135, 165 00 Prague, Czech Republic; (M.B.); (M.K.); (M.P.)
| | - Raul Zazpe
- Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Nam. Cs. Legii 565, 53002 Pardubice, Czech Republic; (R.Z.); (J.M.M.)
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic
| | - Jana Herciková
- Department of Organic Chemistry, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic;
| | - Vlastimil Fíla
- Department of Inorganic Technology, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic;
| | - Jan M. Macak
- Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Nam. Cs. Legii 565, 53002 Pardubice, Czech Republic; (R.Z.); (J.M.M.)
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic
| | - Jana Gaálová
- Institute of Chemical Process Fundamentals of the CAS, v.v.i., Rozvojova 135, 165 00 Prague, Czech Republic; (M.B.); (M.K.); (M.P.)
- Correspondence: ; Tel.: +420-220390255
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15
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Ludden MD, Taylor CGP, Tipping MB, Train JS, Williams NH, Dorrat JC, Tuck KL, Ward MD. Interaction of anions with the surface of a coordination cage in aqueous solution probed by their effect on a cage-catalysed Kemp elimination. Chem Sci 2021; 12:14781-14791. [PMID: 34820094 PMCID: PMC8597839 DOI: 10.1039/d1sc04887b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 10/25/2021] [Indexed: 11/21/2022] Open
Abstract
An octanuclear M8L12 coordination cage catalyses the Kemp elimination reaction of 5-nitro-1,2-benzisoxazole (NBI) with hydroxide to give 2-cyano-4-nitrophenolate (CNP) as the product. In contrast to the previously-reported very efficient catalysis of the Kemp elimination reaction of unsubstituted benzisoxazole, which involves the substrate binding inside the cage cavity, the catalysed reaction of NBI with hydroxide is slower and occurs at the external surface of the cage, even though NBI can bind inside the cage cavity. The rate of the catalysed reaction is sensitive to the presence of added anions, which bind to the 16+ cage surface, displacing the hydroxide ions from around the cage which are essential reaction partners in the Kemp elimination. Thus we can observe different binding affinities of anions to the surface of the cationic cage in aqueous solution by the extent to which they displace hydroxide and thereby inhibit the catalysed Kemp elimination and slow down the appearance of CNP. For anions with a -1 charge the observed affinity order for binding to the cage surface is consistent with their ease of desolvation and their ordering in the Hofmeister series. With anions that are significantly basic (fluoride, hydrogen carbonate, carboxylates) the accumulation of the anion around the cage surface accelerates the Kemp elimination compared to the background reaction with hydroxide, which we ascribe to the ability of these anions to participate directly in the Kemp elimination. This work provides valuable mechanistic insights into the role of the cage in co-locating the substrate and the anionic reaction partners in a cage-catalysed reaction.
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Affiliation(s)
- Michael D Ludden
- Department of Chemistry, University of Warwick Coventry CV4 7AL UK
| | | | - Max B Tipping
- Department of Chemistry, University of Warwick Coventry CV4 7AL UK
| | - Jennifer S Train
- Department of Chemistry, University of Sheffield Sheffield S3 7HF UK
| | | | - Jack C Dorrat
- School of Chemistry, Monash University Melbourne VIC3800 Australia
| | - Kellie L Tuck
- School of Chemistry, Monash University Melbourne VIC3800 Australia
| | - Michael D Ward
- Department of Chemistry, University of Warwick Coventry CV4 7AL UK
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16
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Behroz I, Kleebauer L, Hommernick K, Seidel M, Grätz S, Mainz A, Weston JB, Süssmuth RD. Acetylenic Replacement of Albicidin's Methacrylamide Residue Circumvents Detrimental E/Z Photoisomerization and Preserves Antibacterial Activity. Chemistry 2021; 27:9077-9086. [PMID: 33769627 PMCID: PMC8362182 DOI: 10.1002/chem.202100523] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Indexed: 01/07/2023]
Abstract
The natural product albicidin is a highly potent inhibitor of bacterial DNA gyrase. Its outstanding activity, particularly against Gram-negative pathogens, qualifies it as a promising lead structure in the search for new antibacterial drugs. However, as we show here, the N-terminal cinnamoyl moiety of albicidin is susceptible to photochemical E/Z isomerization. Moreover, the newly formed Z isomer exhibits significantly reduced antibacterial activity, which hampers the development and biological evaluation of albicidin and potent derivatives thereof. Hence, we synthesized 13 different variants of albicidin in which the vulnerable para-coumaric acid moiety was replaced; this yielded photostable analogues. Biological activity assays revealed that diaryl alkyne analogues exhibited virtually undiminished antibacterial efficacy. This promising scaffold will therefore serve as a blueprint for the design of a potent albicidin-based drug.
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Affiliation(s)
- Iraj Behroz
- Institut für Organische ChemieTechnische Universität BerlinStraße des 17. Juni 12410623BerlinGermany
| | - Leonardo Kleebauer
- Institut für Organische ChemieTechnische Universität BerlinStraße des 17. Juni 12410623BerlinGermany
| | - Kay Hommernick
- Institut für Organische ChemieTechnische Universität BerlinStraße des 17. Juni 12410623BerlinGermany
| | - Maria Seidel
- Institut für Organische ChemieTechnische Universität BerlinStraße des 17. Juni 12410623BerlinGermany
| | - Stefan Grätz
- Institut für Organische ChemieTechnische Universität BerlinStraße des 17. Juni 12410623BerlinGermany
| | - Andi Mainz
- Institut für Organische ChemieTechnische Universität BerlinStraße des 17. Juni 12410623BerlinGermany
| | - John B. Weston
- Institut für Organische ChemieTechnische Universität BerlinStraße des 17. Juni 12410623BerlinGermany
| | - Roderich D. Süssmuth
- Institut für Organische ChemieTechnische Universität BerlinStraße des 17. Juni 12410623BerlinGermany
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17
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Stanton DT, Baker JR, McCluskey A, Paula S. Development and interpretation of a QSAR model for in vitro breast cancer (MCF-7) cytotoxicity of 2-phenylacrylonitriles. J Comput Aided Mol Des 2021; 35:613-628. [PMID: 33945106 PMCID: PMC8093599 DOI: 10.1007/s10822-021-00387-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Accepted: 04/25/2021] [Indexed: 12/04/2022]
Abstract
The Arylhydrocarbon Receptor (AhR), a member of the Per-ARNT-SIM transcription factor family, has been as a potential new target to treat breast cancer sufferers. A series of 2-phenylacrylonitriles targeting AhR has been developed that have shown promising and selective activity against cancerous cell lines while sparing normal non-cancerous cells. A quantitative structure–activity relationship (QSAR) modeling approach was pursued in order to generate a predictive model for cytotoxicity to support ongoing synthetic activities and provide important structure-activity information for new structure design. Recent work conducted by us has identified a number of compounds that exhibited false positive cytotoxicity values in the standard MTT assay. This work describes a good quality model that not only predicts the activity of compounds in the MCF-7 breast cancer cell line, but was also able to identify structures that subsequently gave false positive values in the MTT assay by identifying compounds with aberrant biological behavior. This work not only allows the design of future breast cancer cytotoxic activity in vitro, but allows the avoidance of the synthesis of those compounds anticipated to result in anomalous cytotoxic behavior, greatly enhancing the design of such compounds.
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Affiliation(s)
| | - Jennifer R Baker
- Chemistry, School of Environmental & Life Sciences, The University of Newcastle, University Drive, Callaghan, NSW, 2308, Australia
| | - Adam McCluskey
- Chemistry, School of Environmental & Life Sciences, The University of Newcastle, University Drive, Callaghan, NSW, 2308, Australia
| | - Stefan Paula
- Department of Chemistry, Tschannen Science Center, California State University at Sacramento, 6000 J Street, Sacramento, CA, 95819, USA
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18
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Han KH, Kang H, Lee GY, Lee HJ, Jin HM, Cha SK, Yun T, Kim JH, Yang GG, Choi HJ, Ko YK, Jung HT, Kim SO. Highly Aligned Carbon Nanowire Array by E-Field Directed Assembly of PAN-Containing Block Copolymers. ACS APPLIED MATERIALS & INTERFACES 2020; 12:58113-58121. [PMID: 33325677 DOI: 10.1021/acsami.0c15491] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Nanoscale engineering of carbon materials is immensely demanded in various scientific areas. We present highly ordered nitrogen-doped carbon nanowire arrays via block copolymer (BCP) self-assembly under an electric field. Large dielectric constant difference between distinct polymer blocks offers rapid alignment of PMMA-b-PAN self-assembled nanodomains under an electric field. Lithographic patterning of the graphene electrode as well as straightforward thermal carbonization of the PAN block creates well-aligned carbon nanowire device structures. Diverse carbon nanopatterns including radial and curved arrays can be readily assembled by the modification of electrode shapes. Our carbon nanopatterns bear a nitrogen content over 26%, highly desirable for NO2 sensing, as the nitrogen element acts as adsorption sites for NO2 molecules. Aligned carbon nanowire arrays exhibits a 6-fold enhancement of NO2 sensitivity from a randomly aligned counterpart. Taking advantage of well-established benefits from device-oriented BCP nanopatterning, our approach proposes a viable route to highly ordered carbon nanostructures compatible to next-generation device architectures.
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Affiliation(s)
- Kyu Hyo Han
- National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Department of Materials Science and Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - Hohyung Kang
- Department of Chemical and Biomolecular Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - Gil Yong Lee
- National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Department of Materials Science and Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - Ho Jin Lee
- National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Department of Materials Science and Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - Hyeong Min Jin
- Korea Atomic Energy Research Institute (KAERI), Daejeon 34057, Republic of Korea
| | - Seung Keun Cha
- National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Department of Materials Science and Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - Taeyoung Yun
- National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Department of Materials Science and Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - Jang Hwan Kim
- National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Department of Materials Science and Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - Geon Gug Yang
- National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Department of Materials Science and Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - Hee Jae Choi
- National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Department of Materials Science and Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - Young Kyu Ko
- National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Department of Materials Science and Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - Hee-Tae Jung
- Department of Chemical and Biomolecular Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - Sang Ouk Kim
- National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Department of Materials Science and Engineering, KAIST, Daejeon 34141, Republic of Korea
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19
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Hopmann C, Kammer S, Facklam M. Water based blowing agents for rubber extrusion. J Appl Polym Sci 2020. [DOI: 10.1002/app.49512] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Christian Hopmann
- Department of Extrusion and Rubber TechnologyInstitute for Plastics Processing in Industry and Craft at RWTH Aachen University Aachen Germany
| | - Sebastian Kammer
- Department of Extrusion and Rubber TechnologyInstitute for Plastics Processing in Industry and Craft at RWTH Aachen University Aachen Germany
| | - Martin Facklam
- Department of Extrusion and Rubber TechnologyInstitute for Plastics Processing in Industry and Craft at RWTH Aachen University Aachen Germany
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20
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Ruhela A, Kasinathan GN, Rath SN, Sasikala M, Sharma CS. Electrospun freestanding hydrophobic fabric as a potential polymer semi-permeable membrane for islet encapsulation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 118:111409. [PMID: 33255012 DOI: 10.1016/j.msec.2020.111409] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 07/04/2020] [Accepted: 08/11/2020] [Indexed: 01/13/2023]
Abstract
One of the significant problems associated with islet encapsulation for type 1 diabetes treatment is the loss of islet functionality or cell death after transplantation because of the unfavorable environment for the cells. In this work, we propose a simple strategy to fabricate electrospun membranes that will provide a favorable environment for proper islet function and also a desirable pore size to cease cellular infiltration, protecting the encapsulated islet from immune cells. By electrospinning the wettability of three different biocompatible polymers: cellulose acetate (CA), polyethersulfone (PES), and polytetrafluoroethylene (PTFE) was greatly modified. The contact angle of electrospun CA, PES, and PTFE increased to 136°, 126°, and 155° as compared to 55°, 71°, and 128° respectively as a thin film, making the electrospun membranes hydrophobic. Commercial porous membranes of PES and PTFE show a contact angle of 30° and 118°, respectively, confirming the hydrophobicity of electrospun membranes is due to the surface morphology induced by electrospinning. In- vivo results confirm that the induced hydrophobicity and surface morphology of electrospun membranes impede cell attachment, which would help in maintaining the 3D circular morphology of islet cell. More importantly, the pore size of 0.3-0.6 μm obtained due to the densely packed structure of nanofibers, will be able to restrict immune cells but would allow free movement of molecules like insulin and glucose. Therefore, electrospun polymer fibrous membranes as fabricated in this work, with hydrophobic and porous properties, make a strong case for successful islet encapsulation.
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Affiliation(s)
- Aakanksha Ruhela
- Creative & Advanced Research Based On Nanomaterials (CARBON) Laboratory, Department of Chemical Engineering, Indian Institute of Technology Hyderabad, Kandi 502285, Telangana, India
| | - Gokula Nathan Kasinathan
- Regenerative Medicine and Stem Cell Laboratory (RMS), Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Kandi 502285, Telangana, India
| | - Subha N Rath
- Regenerative Medicine and Stem Cell Laboratory (RMS), Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Kandi 502285, Telangana, India
| | - M Sasikala
- Asian Healthcare Foundation, Gachibowli, Hyderabad 500032, Telangana, India
| | - Chandra S Sharma
- Creative & Advanced Research Based On Nanomaterials (CARBON) Laboratory, Department of Chemical Engineering, Indian Institute of Technology Hyderabad, Kandi 502285, Telangana, India.
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21
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Electrochemical wet-spinning process for fabricating strong PAN fibers via an in situ induced plasticizing effect. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122641] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Dual-functional acyl chloride monomer for interfacial polymerization: Toward enhanced water softening and antifouling performance. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116362] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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23
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Borràs J, Mesa V, Suades J, Barnadas-Rodríguez R. Direct Synthesis of Rhenium and Technetium-99m Metallosurfactants by a Transmetallation Reaction of Lipophilic Groups: Potential Applications in the Radiolabeling of Liposomes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:1993-2002. [PMID: 31995988 DOI: 10.1021/acs.langmuir.9b03231] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A new zinc dithiocarbamate functionalized with palmitoyl groups is described as a useful tool for the preparation of metallosurfactants through a transmetallation reaction with the transition metals rhenium and technetium. An amphiphilic rhenium complex is synthesized by a transmetallation reaction with the zinc complex in presence of the polar phosphine sodium triphenylphosphine trisulfonate, which leads to a rhenium complex with a lipophilic dithiocarbamate and a polar phosphine ligand. The study of this rhenium complex has shown that it self-aggregates, leading to the formation of aggregates that have been analyzed by dynamic light scattering and cryotransmission electron microscopy (cryo-TEM). In addition, this amphiphilic rhenium complex is incorporated into soy phosphatidylcholine liposomes, whether liposomes are prepared by mixing phospholipid and the rhenium complex or by the incorporation of the rhenium complex into preformed liposomes. The one-pot reaction of the radiocompound [99mTc(H2O)3(CO)3]+ with the above-mentioned zinc dithiocarbamate, the phosphine sodium triphenylphosphine trisulfonate and the phospholipid soy phosphatidylcholine, leads to liposomes labeled with a Tc-99m homologous complex of the rhenium complex, in accordance with the high-performance liquid chromatography (HPLC) data.
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Affiliation(s)
- Jordi Borràs
- Departament de Quı́mica, Edifici C, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Catalonia, Spain
| | - Verónica Mesa
- Departament de Quı́mica, Edifici C, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Catalonia, Spain
| | - Joan Suades
- Departament de Quı́mica, Edifici C, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Catalonia, Spain
| | - Ramon Barnadas-Rodríguez
- Unitat de Biofı́sica/Centre d'Estudis en Biofı́sica, Departament de Bioquı́mica i Biologia Molecular, Facultat de Medicina, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Catalonia, Spain
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Fessler AB, Dey A, Finis DS, Fowler AJ, Chakrabarti K, Ogle CA. Innately Water-Soluble Isatoic Anhydrides with Modulated Reactivities for RNA SHAPE Analysis. Bioconjug Chem 2020; 31:884-888. [DOI: 10.1021/acs.bioconjchem.0c00024] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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25
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Polyarylate membrane constructed from porous organic cage for high-performance organic solvent nanofiltration. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2019.117505] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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26
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Mbaba M, Dingle LMK, Cash D, Mare JADL, Laming D, Taylor D, Hoppe HC, Edkins AL, Khanye SD. Repurposing a polymer precursor: Synthesis and in vitro medicinal potential of ferrocenyl 1,3-benzoxazine derivatives. Eur J Med Chem 2019; 187:111924. [PMID: 31855792 DOI: 10.1016/j.ejmech.2019.111924] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 11/27/2019] [Accepted: 11/28/2019] [Indexed: 01/12/2023]
Abstract
Cancer and malaria remain relevant pathologies in modern medicinal chemistry endeavours. This is compounded by the threat of development of resistance to existing clinical drugs in use as first-line option for treatment of these diseases. To counter this threat, strategies such as drug repurposing and hybridization are constantly adapted in contemporary drug discovery for the expansion of the drug arsenal and generation of novel chemotypes with potential to avert or delay resistance. In the present study, a polymer precursor scaffold, 1,3-benzoxazine, has been repurposed by incorporation of an organometallic ferrocene unit to produce a novel class of compounds showing in vitro biological activity against breast cancer, malaria and trypanosomiasis. The resultant ferrocenyl 1,3-benzoxazine compounds displayed high potency and selectivity against the investigated diseases, with IC50 values in the low and sub-micromolar range against both chloroquine-sensitive (3D7) and resistant (Dd2) strains of the Plasmodium falciparum parasite. On the other hand, antitrypanosomal (Trypanosoma brucei brucei) potencies were observed between 0.15 and 38.6 μM. The majority of the compounds were not active against breast cancer cells (HCC70), however, for the toxic compounds, IC50 values ranged from 11.0 to 30.5 μM. Preliminary structure-activity relationships revealed the basic oxazine sub-ring and lipophilic benzene substituents to be conducive for biological efficacy of the ferrocenyl 1,3-benzoxazines reported in the study. DNA interaction studies performed on the most promising compound 4c suggested that DNA damage may be one possible mode of action of this class of compounds.
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Affiliation(s)
- Mziyanda Mbaba
- Faculty of Science, Department of Chemistry, Rhodes University, Grahamstown, 6140, South Africa.
| | - Laura M K Dingle
- Faculty of Science, Department of Biochemistry and Microbiology, Rhodes University, Grahamstown, 6140, South Africa; Biomedical Biotechnology Research Unit, Rhodes University, Grahamstown, 6140, South Africa
| | - Devon Cash
- Faculty of Science, Department of Biochemistry and Microbiology, Rhodes University, Grahamstown, 6140, South Africa; Biomedical Biotechnology Research Unit, Rhodes University, Grahamstown, 6140, South Africa
| | - Jo-Anne de la Mare
- Faculty of Science, Department of Biochemistry and Microbiology, Rhodes University, Grahamstown, 6140, South Africa; Biomedical Biotechnology Research Unit, Rhodes University, Grahamstown, 6140, South Africa; Centre for Chemico- and Biomedicinal Research, Rhodes University, Grahamstown, 6140, South Africa
| | - Dustin Laming
- Faculty of Science, Department of Biochemistry and Microbiology, Rhodes University, Grahamstown, 6140, South Africa; Centre for Chemico- and Biomedicinal Research, Rhodes University, Grahamstown, 6140, South Africa
| | - Dale Taylor
- Division of Clinical Pharmacology, Faculty of Medicine, University of Cape Town, Observatory, Cape Town, 7925, South Africa
| | - Heinrich C Hoppe
- Faculty of Science, Department of Biochemistry and Microbiology, Rhodes University, Grahamstown, 6140, South Africa; Centre for Chemico- and Biomedicinal Research, Rhodes University, Grahamstown, 6140, South Africa
| | - Adrienne L Edkins
- Faculty of Science, Department of Biochemistry and Microbiology, Rhodes University, Grahamstown, 6140, South Africa; Biomedical Biotechnology Research Unit, Rhodes University, Grahamstown, 6140, South Africa; Centre for Chemico- and Biomedicinal Research, Rhodes University, Grahamstown, 6140, South Africa
| | - Setshaba D Khanye
- Faculty of Science, Department of Chemistry, Rhodes University, Grahamstown, 6140, South Africa; Centre for Chemico- and Biomedicinal Research, Rhodes University, Grahamstown, 6140, South Africa; Division of Pharmaceutical Chemistry, Faculty of Pharmacy, Rhodes University, Grahamstown, 6140, South Africa.
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Asadujjaman A, Ahmadi V, Michel Claude Franc A, Bertin A. 2,6‐Diaminopyridine and Acrylamide‐Based Copolymers with Upper Critical Solution Temperature‐type Behavior in Aqueous Solution. ACTA ACUST UNITED AC 2019. [DOI: 10.1002/pola.29474] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Asad Asadujjaman
- Bundesanstalt für Materialforschung und –prüfung (BAM), Unter den Eichen 87 12205 Berlin Germany
- Technische Universität München, WACKER‐Lehrstuhl für Makromolekulare Chemie, Lichtenbergstraße 4 85747 Garching bei München Germany
| | - Vahid Ahmadi
- Bundesanstalt für Materialforschung und –prüfung (BAM), Unter den Eichen 87 12205 Berlin Germany
- Freie Universität Berlin, Institute of Chemistry and Biochemistry–Organic Chemistry, Takustr. 3 14195 Berlin Germany
| | | | - Annabelle Bertin
- Bundesanstalt für Materialforschung und –prüfung (BAM), Unter den Eichen 87 12205 Berlin Germany
- Freie Universität Berlin, Institute of Chemistry and Biochemistry–Organic Chemistry, Takustr. 3 14195 Berlin Germany
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Yuan B, Jiang C, Li P, Sun H, Li P, Yuan T, Sun H, Niu QJ. Ultrathin Polyamide Membrane with Decreased Porosity Designed for Outstanding Water-Softening Performance and Superior Antifouling Properties. ACS APPLIED MATERIALS & INTERFACES 2018; 10:43057-43067. [PMID: 30418742 DOI: 10.1021/acsami.8b15883] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Poly(piperazine-amide)-based nanofiltration membranes exhibit a smooth surface and superior antifouling properties but often have lower Ca2+ and Mg2+ rejection due to their larger inner micropore and thus cannot be extensively used in water-softening applications. To decrease the pore size of poly(piperazine-amide) membranes, we designed and synthesized a novel monomer, 1,2,3,4-cyclobutane tetracarboxylic acid chloride (BTC), which possesses a smaller molecular conformation than trimesoyl chloride (TMC). The thickness of the prepared BTC-piperazine (PIP) polyamide nanofilm via interfacial polymerization is as thin as 15 nm, significantly lower than the 50 nm thickness of the TMC-PIP nanofilm. The surface characterization reveals that the BTC-PIP polyamide membrane exhibits an enhanced hydrophilicity, a smooth surface, and a decreased surface-negative charge. The desalination performance (both rejection and water flux) of these membranes in terms of Ca2+ and Mg2+ exceeds that of the current commercial water-softening membranes. In addition, the BTC-PIP polyamide membrane also exhibits superior antifouling properties compared to the TMC-based polyamide membrane. More importantly, molecular simulations show that the BTC-PIP membrane has a lower average pore size than that of the TMC-PIP membrane, which demonstrates an enhanced steric hindrance effect, as confirmed by desalination performance. Our results demonstrate that in the household and industrial water-softening market, BTC-PIP membrane with decreased porosity, enhanced hydrophilicity, and smooth surface is preferred alternative to the conventional TMC-based polyamide membranes.
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Affiliation(s)
- Bingbing Yuan
- State Key Laboratory of Heavy Oil Processing , China University of Petroleum (East China) , Qingdao 266555 , P. R. China
| | - Chi Jiang
- State Key Laboratory of Heavy Oil Processing , China University of Petroleum (East China) , Qingdao 266555 , P. R. China
| | - Pengfei Li
- State Key Laboratory of Heavy Oil Processing , China University of Petroleum (East China) , Qingdao 266555 , P. R. China
| | - Honghong Sun
- State Key Laboratory of Heavy Oil Processing , China University of Petroleum (East China) , Qingdao 266555 , P. R. China
| | - Peng Li
- State Key Laboratory of Heavy Oil Processing , China University of Petroleum (East China) , Qingdao 266555 , P. R. China
| | - Tao Yuan
- State Key Laboratory of Heavy Oil Processing , China University of Petroleum (East China) , Qingdao 266555 , P. R. China
| | - Haixiang Sun
- State Key Laboratory of Heavy Oil Processing , China University of Petroleum (East China) , Qingdao 266555 , P. R. China
| | - Q Jason Niu
- State Key Laboratory of Heavy Oil Processing , China University of Petroleum (East China) , Qingdao 266555 , P. R. China
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29
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Kalmutzki MJ, Diercks CS, Yaghi OM. Metal-Organic Frameworks for Water Harvesting from Air. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1704304. [PMID: 29672950 DOI: 10.1002/adma.201704304] [Citation(s) in RCA: 271] [Impact Index Per Article: 45.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 11/20/2017] [Indexed: 05/20/2023]
Abstract
Water harvesting from air in passive, adsorption-based devices holds great potential for delivering drinking water to arid regions of the world. This technology requires adsorbents that can be tailored for a maximum working capacity, temperature response, and the relative pressure range in which reversible adsorption occurs. In this respect, metal-organic frameworks (MOFs) are promising, owing to their structural diversity and the precision of their functionalization for adjusting both pore size and hydrophilicity, thereby facilitating the rational design of their water-sorption characteristics. Here, chemical and structural factors crucial for the design of hydrolytically stable MOFs for water adsorption are discussed. Prevalent water adsorption mechanisms in micro- and mesoporous MOFs alongside strategies for fine-tuning of their adsorption behavior by means of reticular chemistry are presented. Finally, an approach for the selection of promising MOFs with respect to water harvesting from air is proposed and design concepts for next-generation MOFs for application in passive adsorption-based water-harvesting devices are outlined.
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Affiliation(s)
- Markus J Kalmutzki
- Department of Chemistry, Kavli Energy NanoScience Institute, and Berkeley Global Science Institute, University of California - Berkeley, Berkeley, CA, 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Christian S Diercks
- Department of Chemistry, Kavli Energy NanoScience Institute, and Berkeley Global Science Institute, University of California - Berkeley, Berkeley, CA, 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Omar M Yaghi
- Department of Chemistry, Kavli Energy NanoScience Institute, and Berkeley Global Science Institute, University of California - Berkeley, Berkeley, CA, 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- King Abdulaziz City for Science and Technology (KACST), P.O. Box 6086, Riyadh, 11442, Saudi Arabia
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31
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Heinz D, Amado E, Kressler J. Polyphilicity-An Extension of the Concept of Amphiphilicity in Polymers. Polymers (Basel) 2018; 10:E960. [PMID: 30960885 PMCID: PMC6403972 DOI: 10.3390/polym10090960] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 08/23/2018] [Accepted: 08/23/2018] [Indexed: 12/12/2022] Open
Abstract
Recent developments in synthetic pathways as simple reversible-deactivation radical polymerization (RDRP) techniques and quantitative post-polymerization reactions, most notoriously 'click' reactions, leading to segmented copolymers, have broadened the molecular architectures accessible to polymer chemists as a matter of routine. Segments can be blocks, grafted chains, branchings, telechelic end-groups, covalently attached nanoparticles, nanodomains in networks, even sequences of random copolymers, and so on. In this review, we describe the variety of the segmented synthetic copolymers landscape from the point of view of their chemical affinity, or synonymous philicity, in bulk or with their surroundings, such as solvents, permeant gases, and solid surfaces. We focus on recent contributions, current trends, and perspectives regarding polyphilic copolymers, which have, in addition to hydrophilic and lipophilic segments, other philicities, for example, towards solvents, fluorophilic entities, ions, silicones, metals, nanoparticles, and liquid crystalline moieties.
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Affiliation(s)
- Daniel Heinz
- Department of Chemistry, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany.
| | - Elkin Amado
- Department of Chemistry, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany.
| | - Jörg Kressler
- Department of Chemistry, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany.
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32
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Milik SN, Abdel-Aziz AK, Lasheen DS, Serya RAT, Minucci S, Abouzid KAM. Surmounting the resistance against EGFR inhibitors through the development of thieno[2,3-d]pyrimidine-based dual EGFR/HER2 inhibitors. Eur J Med Chem 2018; 155:316-336. [PMID: 29902719 DOI: 10.1016/j.ejmech.2018.06.011] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 05/11/2018] [Accepted: 06/04/2018] [Indexed: 12/31/2022]
Abstract
In light of the emergence of resistance against the currently available EGFR inhibitors, our study focuses on tackling this problem through the development of dual EGFR/HER2 inhibitors with improved enzymatic affinities. Guided by the binding mode of the marketed dual EGFR/HER2 inhibitor, Lapatinib, we proposed the design of dual EGFR/HER2 inhibitors based on the 6-phenylthieno[2,3-d]pyrimidine as a core scaffold and hinge binder. After two cycles of screening aiming to identify the optimum aniline headgroup and solubilizing group, we eventually identified 27b as a dual EGFR/HER2 inhibitor with IC50 values of 91.7 nM and 1.2 μM, respectively. Notably, 27b dramatically reduced the viability of various patient-derived cancer cells preferentially overexpressing EGFR/HER2 (A431, MDA-MBA-361 and SKBr3 with IC50 values of 1.45, 3.5 and 4.83 μM, respectively). Additionally, 27b efficiently thwarted the proliferation of lapatinib-resistant human non-small lung carcinoma (NCI-H1975) cells, harboring T790 M mutation, with IC50 of 4.2 μM. Consistently, 27b significantly blocked EGF-induced EGFR activation and inactivated its downstream AKT/mTOR/S6 signalling pathway triggering apoptotic cell death in NCI-H1975 cells. The present study presents a promising candidate for further design and development of novel EGFR/HER2 inhibitors capable of overcoming EGFR TKIs resistance.
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Affiliation(s)
- Sandra N Milik
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo, 11566, Egypt.
| | - Amal Kamal Abdel-Aziz
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo, 11566, Egypt; Department of Experimental Oncology, European Institute of Oncology, Via Adamello 16, 20139, Milan, Italy
| | - Deena S Lasheen
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo, 11566, Egypt
| | - Rabah A T Serya
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo, 11566, Egypt
| | - Saverio Minucci
- Department of Experimental Oncology, European Institute of Oncology, Via Adamello 16, 20139, Milan, Italy; Department of Biosciences, University of Milan, Milan, 20100, Italy
| | - Khaled A M Abouzid
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo, 11566, Egypt.
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33
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Lucht K, Loose D, Ruschmeier M, Strotkötter V, Dyker G, Morgenstern K. Hydrophilicity and Microsolvation of an Organic Molecule Resolved on the Sub-molecular Level by Scanning Tunneling Microscopy. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Karsten Lucht
- Physikalische Chemie I; Ruhr-Universität Bochum; Universitätsstraße 150 44801 Bochum Germany
| | - Dirk Loose
- Organische Chemie II; Ruhr-Universität Bochum; Universitätsstraße 150 44801 Bochum Germany
| | - Maximilian Ruschmeier
- Physikalische Chemie I; Ruhr-Universität Bochum; Universitätsstraße 150 44801 Bochum Germany
| | - Valerie Strotkötter
- Physikalische Chemie I; Ruhr-Universität Bochum; Universitätsstraße 150 44801 Bochum Germany
| | - Gerald Dyker
- Organische Chemie II; Ruhr-Universität Bochum; Universitätsstraße 150 44801 Bochum Germany
| | - Karina Morgenstern
- Physikalische Chemie I; Ruhr-Universität Bochum; Universitätsstraße 150 44801 Bochum Germany
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34
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Lucht K, Loose D, Ruschmeier M, Strotkötter V, Dyker G, Morgenstern K. Hydrophilicity and Microsolvation of an Organic Molecule Resolved on the Sub-molecular Level by Scanning Tunneling Microscopy. Angew Chem Int Ed Engl 2018; 57:1266-1270. [PMID: 29207212 DOI: 10.1002/anie.201711062] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 11/29/2017] [Indexed: 11/08/2022]
Abstract
Low-temperature scanning tunneling microscopy was used to follow the formation of a solvation shell around an adsorbed functionalized azo dye from the attachment of the first water molecule to a fully solvated molecule. Specific functional groups bind initially one water molecule each, which act as anchor points for additional water molecules. Further water attachment occurs in areas close to these functional groups even when the functional groups themselves are already saturated. In contrast, water molecules surround the hydrophobic parts of the molecule only when the two-dimensional solvation shell closes around them. This study thus traces hydrophilic and hydrophobic properties of an organic molecule down to a sub-molecular length scale.
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Affiliation(s)
- Karsten Lucht
- Physikalische Chemie I, Ruhr-Universität Bochum, Universitätsstraße 150, 44801, Bochum, Germany
| | - Dirk Loose
- Organische Chemie II, Ruhr-Universität Bochum, Universitätsstraße 150, 44801, Bochum, Germany
| | - Maximilian Ruschmeier
- Physikalische Chemie I, Ruhr-Universität Bochum, Universitätsstraße 150, 44801, Bochum, Germany
| | - Valerie Strotkötter
- Physikalische Chemie I, Ruhr-Universität Bochum, Universitätsstraße 150, 44801, Bochum, Germany
| | - Gerald Dyker
- Organische Chemie II, Ruhr-Universität Bochum, Universitätsstraße 150, 44801, Bochum, Germany
| | - Karina Morgenstern
- Physikalische Chemie I, Ruhr-Universität Bochum, Universitätsstraße 150, 44801, Bochum, Germany
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35
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Alasmary FAS, Alnahdi FS, Ben Bacha A, El-Araby AM, Moubayed N, Alafeefy AM, El-Araby ME. New quinoxalinone inhibitors targeting secreted phospholipase A2 and α-glucosidase. J Enzyme Inhib Med Chem 2017; 32:1143-1151. [PMID: 28856929 PMCID: PMC6009887 DOI: 10.1080/14756366.2017.1363743] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 07/27/2017] [Accepted: 08/01/2017] [Indexed: 11/05/2022] Open
Abstract
Elevated blood glucose and increased activities of secreted phospholipase A2 (sPLA2) are strongly linked to coronary heart disease. In this report, our goal was to develop small heterocyclic compound that inhibit sPLA2. The title compounds were also tested against α-glucosidase and α-amylase. This array of enzymes was selected due to their implication in blood glucose regulation and diabetic cardiovascular complications. Therefore, two distinct series of quinoxalinone derivatives were synthesised; 3-[N'-(substituted-benzylidene)-hydrazino]-1H-quinoxalin-2-ones 3a-f and 1-(substituted-phenyl)-5H-[1,2,4]triazolo[4,3-a]quinoxalin-4-ones 4a-f. Four compounds showed promising enzyme inhibitory effect, compounds 3f and 4b-d potently inhibited the catalytic activities of all of the studied proinflammatory sPLA2. Compound 3e inhibited α-glucosidase (IC50 = 9.99 ± 0.18 µM); which is comparable to quercetin (IC50 = 9.93 ± 0.66 µM), a known inhibitor of this enzyme. Unfortunately, all compounds showed weak activity against α-amylase (IC50 > 200 µM). Structure-based molecular modelling tools were utilised to rationalise the SAR compared to co-crystal structures with sPLA2-GX as well as α-glucosidase. This report introduces novel compounds with dual activities on biochemically unrelated enzymes mutually involved in diabetes and its complications.
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Affiliation(s)
- Fatmah A. S. Alasmary
- Chemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Fatima S. Alnahdi
- Chemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Abir Ben Bacha
- Biochemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | | | - Nadine Moubayed
- Botany and Microbiology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Ahmed M. Alafeefy
- Department of Chemistry, Kulliyyah of Pharmacy, International Islamic University Malaysia, Kuantan, Malaysia
| | - Moustafa E. El-Araby
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Helwan University, Cairo, Egypt
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Schwertz G, Frei MS, Witschel MC, Rottmann M, Leartsakulpanich U, Chitnumsub P, Jaruwat A, Ittarat W, Schäfer A, Aponte RA, Trapp N, Mark K, Chaiyen P, Diederich F. Conformational Aspects in the Design of Inhibitors for Serine Hydroxymethyltransferase (SHMT): Biphenyl, Aryl Sulfonamide, and Aryl Sulfone Motifs. Chemistry 2017; 23:14345-14357. [DOI: 10.1002/chem.201703244] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 08/15/2017] [Indexed: 12/31/2022]
Affiliation(s)
- Geoffrey Schwertz
- Laboratorium für Organische Chemie; ETH Zurich; Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
| | - Michelle S. Frei
- Laboratorium für Organische Chemie; ETH Zurich; Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
| | | | - Matthias Rottmann
- Swiss Tropical and Public Health Institute (SwissTPHI); Socinstrasse 57 4051 Basel Switzerland
- Universität Basel; Petersplatz 1 4003 Basel Switzerland
| | - Ubolsree Leartsakulpanich
- National Center for Genetic Engineering and Biotechnology; 113 Thailand Science Park, Phahonyothin Road Pathumthani 12120 Thailand
| | - Penchit Chitnumsub
- National Center for Genetic Engineering and Biotechnology; 113 Thailand Science Park, Phahonyothin Road Pathumthani 12120 Thailand
| | - Aritsara Jaruwat
- National Center for Genetic Engineering and Biotechnology; 113 Thailand Science Park, Phahonyothin Road Pathumthani 12120 Thailand
| | - Wanwipa Ittarat
- National Center for Genetic Engineering and Biotechnology; 113 Thailand Science Park, Phahonyothin Road Pathumthani 12120 Thailand
| | - Anja Schäfer
- Swiss Tropical and Public Health Institute (SwissTPHI); Socinstrasse 57 4051 Basel Switzerland
- Universität Basel; Petersplatz 1 4003 Basel Switzerland
| | | | - Nils Trapp
- Laboratorium für Organische Chemie; ETH Zurich; Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
| | - Kerstin Mark
- Laboratorium für Organische Chemie; ETH Zurich; Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
| | - Pimchai Chaiyen
- Department of Biochemistry and Center for Excellence in Protein and Enzyme Technology; Faculty of Science Mahidol University; 272 Rama VI Road Bangkok 10400 Thailand
- Department of Biomolecular Science and Engineering; School of Biomolecular Science & Engineering; Vidyasirimedhi Institute of Science and Technology (VISTEC), Wangchan Valley; Rayong 21210 Thailand
| | - François Diederich
- Laboratorium für Organische Chemie; ETH Zurich; Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
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Tomaszewski W, Charmas B, Skubiszewska-Zięba J. Solid phase extraction of explosives on Ni-doped carbosils prepared by mechanochemistry. ADSORPT SCI TECHNOL 2017. [DOI: 10.1177/0263617417704297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The article presents the application of two sets of Ni-doped carbosils in the solid phase extraction of explosives. The adsorbents were prepared by two different methods. The first set of carbosils was obtained by mechanochemical deposition of potato starch and nickel salt on the surface of silica gel, and subsequent carbonization. The second set of carbosils was obtained from the same precursors and under quite similar conditions, i.e. with the exception of mechanochemical deposition of potato starch replaced by the gelation step. The prepared adsorbents were applied in solid phase extraction of explosive nitrate esters, and nitroaromatics from aqueous solutions. The adsorption and desorption steps were evaluated separately. It was found that textural properties, influenced by carbon deposit and nickel content, have a large impact on the solid phase extraction results. The recovery rates obtained onto carbosils prepared by mechanochemical method are approximately thrice as high as those observed for carbosils prepared by gelation method. It was shown that the composites with moderate nickel content can be used as effective materials for extraction both of aliphatic and aromatic explosives.
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Affiliation(s)
- W Tomaszewski
- Faculty of Chemistry, Warsaw University of Technology, Poland
| | - B Charmas
- Faculty of Chemistry, Maria Curie-Skłodowska University, Poland
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38
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Asadujjaman A, Bertin A, Schönhals A. Dielectric analysis of the upper critical solution temperature behaviour of a poly(acrylamide-co-acrylonitrile) copolymer system in water. SOFT MATTER 2017; 13:2384-2393. [PMID: 28294239 DOI: 10.1039/c6sm02684b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A copolymer consisting of acrylamide (AAm) and acrylonitrile (AN) in aqueous solution was investigated using broadband dielectric spectroscopy at frequencies between 10-1 Hz and 106 Hz in the temperature range from 2 °C to 60 °C. This system shows an UCST phase behavior. The phase transition and aggregation behavior is monitored by both the temperature and frequency dependence of the complex conductivity σ*(f, T), where the AN fraction and the concentration of the solution were varied. Additionally, the dielectric data are compared with the results obtained from dynamic light scattering measurements. The temperature dependence of the DC conductivity (σDC) of the copolymer solution is monitored and the phase transition temperature (PTT) of the poly(AAm-co-AN) copolymer is deduced from a change in the T-dependence of the DC conductivity. The change in σDC can be explained by decreased effective charge carrier mobility and a reduction of the effective charge number density at temperatures below the phase transition temperature of the poly(AAm-co-AN) solution. A pronounced interfacial polarization effect on the frequency dependence of the real part of the conductivity (σ') is observed at temperatures below the phase transition temperature. The charge carriers are blocked at the formed aggregates giving rise to this interfacial polarization. The dependence of the interfacial polarization on the acrylonitrile fraction in the copolymer and the concentration of the solution is studied in detail and conclusions concerning the internal structures of the copolymer aggregates are drawn.
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Affiliation(s)
- Asad Asadujjaman
- Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany.
| | - Annabelle Bertin
- Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany. and Freie Universität Berlin, Institute of Chemistry and Biochemistry-Organic Chemistry, Takustr. 3, 14195 Berlin, Germany
| | - Andreas Schönhals
- Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany.
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Asadujjaman A, Kent B, Bertin A. Phase transition and aggregation behaviour of an UCST-type copolymer poly(acrylamide-co-acrylonitrile) in water: effect of acrylonitrile content, concentration in solution, copolymer chain length and presence of electrolyte. SOFT MATTER 2017; 13:658-669. [PMID: 27995248 DOI: 10.1039/c6sm02262f] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
An UCST-type copolymer of acrylamide (AAm) and acrylonitrile (AN) (poly(AAm-co-AN)) was prepared by reversible addition fragmentation chain transfer (RAFT) polymerization and its temperature-induced phase transition and aggregation behaviour studied by turbidimetry, static and dynamic light scattering, small angle neutron scattering (SANS) and cryo-transmission electron microscopy (cryo-TEM) measurements. The phase transition temperature was found to increase with increasing AN content in the copolymer, concentration of the solutions and copolymer chain length. A significant effect was observed onto the phase transition temperature by addition of different electrolytes into the copolymer solution. The copolymer chains were aggregated below the phase transition temperature and disaggregated above it. The size of the aggregates increases with increasing AN contents and concentration of the copolymer solutions below the phase transition temperature. The copolymer chains were expanded and weekly associated in solution above the phase transition temperature. A model is proposed to explain such association-aggregation behaviour of poly(AAm-co-AN) copolymers depending on AN contents and concentration of the copolymer solutions as a function of temperature.
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Affiliation(s)
- Asad Asadujjaman
- Federal Institute for Materials Research and Testing (BAM), Unter den Eichen 87, 12205 Berlin, Germany.
| | - Ben Kent
- Helmholtz-Zentrum Berlin (HZB), Hanhn-Meitner-Platz 1, 14109 Berlin, Germany
| | - Annabelle Bertin
- Federal Institute for Materials Research and Testing (BAM), Unter den Eichen 87, 12205 Berlin, Germany. and Freie Universität Berlin, Institute of Chemistry and Biochemistry-Organic Chemistry, Takustr. 3, 14195 Berlin, Germany
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40
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Dagade DH, Barge SS. Hydrogen Bonding in Liquid Water and in the Hydration Shell of Salts. Chemphyschem 2016; 17:902-12. [DOI: 10.1002/cphc.201500921] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 11/28/2016] [Indexed: 01/26/2023]
Affiliation(s)
- Dilip H. Dagade
- Department of Chemistry; Shivaji University; Kolhapur 416004 India
| | - Seema S. Barge
- Department of Chemistry; Shivaji University; Kolhapur 416004 India
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Meninno S, Vidal-Albalat A, Lattanzi A. Asymmetric Epoxidation of Alkylidenemalononitriles: Key Step for One-Pot Approach to Enantioenriched 3-Substituted Piperazin-2-ones. Org Lett 2015; 17:4348-51. [DOI: 10.1021/acs.orglett.5b02186] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sara Meninno
- Dipartimento di Chimica e
Biologia, Università di Salerno, Via Giovanni Paolo II, 84084, Fisciano, Italy
| | - Andreu Vidal-Albalat
- Dipartimento di Chimica e
Biologia, Università di Salerno, Via Giovanni Paolo II, 84084, Fisciano, Italy
| | - Alessandra Lattanzi
- Dipartimento di Chimica e
Biologia, Università di Salerno, Via Giovanni Paolo II, 84084, Fisciano, Italy
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Sagawa N, Shikata T. Dangling OH Vibrations of Water Molecules in Aqueous Solutions of Aprotic Polar Compounds Observed in the Near-Infrared Regime. J Phys Chem B 2015; 119:8087-95. [DOI: 10.1021/acs.jpcb.5b02886] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Naoya Sagawa
- Division of Natural Resources
and Eco-materials, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
| | - Toshiyuki Shikata
- Division of Natural Resources
and Eco-materials, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
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Tomaszewski W, Gun'ko VM. Evaluation of adsorption and desorption steps in the solid-phase extraction of explosives using carbon/silica gel nanocomposites. J Sep Sci 2015; 38:2488-95. [PMID: 25914305 DOI: 10.1002/jssc.201500171] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 04/16/2015] [Accepted: 04/19/2015] [Indexed: 11/06/2022]
Abstract
New series of carbon/silica gel nanocomposites, carbosils, prepared by the carbonization of starch bound to silica gel, and carbosils additionally silylated with octadecyldimethylchlorosilane were synthesized. These materials were applied as adsorbents in the solid-phase extraction of explosive nitrate esters and nitroaromatics from aqueous solutions. The adsorption and desorption steps were evaluated separately. It was found that both the molecular properties of explosives (dipole moments, orbital energies, solvation effects) and textural properties influenced by carbon deposits or octadecyl moieties have a large impact on the recovery rates. It was shown that the composites with moderate content of carbon deposits or with the highest amounts of carbon deposits and additionally silylated can be used as materials tailored for extraction of explosives from the aqueous solutions.
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