1
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Chen FJ, Lin W, Chen FE. Non-symmetric stapling of native peptides. Nat Rev Chem 2024; 8:304-318. [PMID: 38575678 DOI: 10.1038/s41570-024-00591-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/23/2024] [Indexed: 04/06/2024]
Abstract
Stapling has emerged as a powerful technique in peptide chemistry. It enables precise control over peptide conformation leading to enhanced properties such as improved stability and enhanced binding affinity. Although symmetric stapling methods have been extensively explored, the field of non-symmetric stapling of native peptides has received less attention, largely as a result of the formidable challenges it poses - in particular the complexities involved in achieving the high chemo-selectivity and site-selectivity required to simultaneously modify distinct proteinogenic residues. Over the past 5 years, there have been significant breakthroughs in addressing these challenges. In this Review, we describe the latest strategies for non-symmetric stapling of native peptides, elucidating the protocols, reaction mechanisms and underlying design principles. We also discuss current challenges and opportunities this field offers for future applications, such as ligand discovery and peptide-based therapeutics.
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Affiliation(s)
- Fa-Jie Chen
- College of Chemistry, Fuzhou University, Fuzhou, P. R. China.
| | - Wanzhen Lin
- College of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou, P. R. China
| | - Fen-Er Chen
- College of Chemistry, Fuzhou University, Fuzhou, P. R. China.
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, P. R. China.
- Shanghai Engineering Research Center of Industrial Asymmetric Catalysis of Chiral Drugs, Fudan University, Shanghai, P. R. China.
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2
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Ohashi M, Ando K, Murakami S, Michigami K, Ogoshi S. N-Heterocyclic Carbenes with Polyfluorinated Groups at the 4- and 5-Positions from [3 + 2] Cycloadditions between Formamidinates and cis-1,2-Difluoroalkene Derivatives. J Am Chem Soc 2023; 145:23098-23108. [PMID: 37749910 DOI: 10.1021/jacs.3c06331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
We herein report the formation of fluorinated N-heterocyclic carbenes (NHCFs) that bear fluorine atoms at the 4- and 5-positions of the imidazol-2-ylidene ring. Treatment of sodium N,N'-bis(aryl)formamidinates with tetrafluoroethylene followed by the addition of LiBF4 induced a [3 + 2] cycloaddition to afford 4,5-difluorinated imidazolium salts, which served as the precursors for 4,5-difluorinated NHCs. A key feature of this procedure is its applicability to other perfluorinated compounds, which enabled us to incorporate polyfluorinated functional groups at 4- and 5-positions on the imidazol-2-ylidene skeleton. Thus, employing octafluorocyclopentene and hexafluorobenzene led to the formation of 4,4,5,5,6,6-hexafluoro-1,3-diaryl-3,4,5,6-tetrahydrocyclopenta[d]imidazolium (CypIPrF·HBF4) and 4,5,6,7-tetrafluoro-1,3-diarylbenzimidazolium (BIPrF·HBF4) salts, respectively. A thorough NMR analysis of these NHCFs, their selenium adducts, and their tricarbonyl nickel complexes, (NHCF)Ni(CO)3, demonstrated that the fluorine substituents, contrary to expectations, tend to act as electron donors owing to the considerable positive mesomeric effect, while the perfluorocyclopentene-fused and tetrafluorobenzo-fused rings are pure electron acceptors due to their strong negative inductive effect. The unique and increased π-accepting character of the perfluorocyclopentene-fused and tetrafluorobenzo-fused NHCFs in both stoichiometric and catalytic reactions is further demonstrated by employing (NHCF)Ni(CO)3 and (NHCF)AuCl species, respectively. Moreover, an analysis of the % buried volume (%Vbur) values clearly suggests that the modification of the NHC backbone with polyfluorinated groups can drastically alter the electronic properties of the NHC ligand without substantially changing its steric properties. Our experimental results were further corroborated by a series of computational calculations.
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Affiliation(s)
- Masato Ohashi
- Department of Chemistry, Graduate School of Science, Osaka Metropolitan University, Sakai 599-8531 Osaka, Japan
| | - Kota Ando
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita 565-0871 Osaka, Japan
| | - Shoichi Murakami
- Department of Chemistry, Faculty of Science, Osaka Prefecture University, Sakai 599-8531 Osaka, Japan
| | - Kenichi Michigami
- Department of Chemistry, Graduate School of Science, Osaka Metropolitan University, Sakai 599-8531 Osaka, Japan
| | - Sensuke Ogoshi
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita 565-0871 Osaka, Japan
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3
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Muñoz G, Chamberlain KM, Athukorale S, Ma G, Gu X, Pittman CU, Smith DW. Teaching Old Polymers New Tricks: Improved Synthesis and Anomalous Crystallinity for a Lost Semi-Fluorinated Polyaryl Ether via Interfacial Polymerization of Hexafluoroacetone Hydrate and Diphenyl Ether. Macromol Rapid Commun 2023; 44:e2200737. [PMID: 36271774 DOI: 10.1002/marc.202200737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 10/03/2022] [Indexed: 11/06/2022]
Abstract
A practical and direct electrophilic polymerization of hexafluoroacetone hydrate with diphenyl ether toward the preparation of semi-fluorinated polyaryl ethers (PAE) is reported. Electrophilic aromatic substitution (EAS) polymerization under interfacial conditions with phase transfer catalyst (Aliquat 336) proceeds in trifluoromethanesulfonic anhydride by generation of trifluoromethanesulfonic acid and the protonated hexafluoroacetone (HFA) in situ affording 1,1,1,3,3,3-hexafluoroisopropylidene (6F) PAE with high regioselectivity (4,4'-DPE) and high molecular weight (≈60 kDa). Although first reported in a 1966 US Patent by DuPont using harsh conditions, improved synthetic methods or modern characterization has not been disclosed until now. Despite the presence of the 6F group, known to impart disordered morphology, this simple semi-fluorinated PAE exhibits anomalous crystallinity with polymorphic melting points (Tm ) ranging from 230-309 °C, high solubility in common organic solvents, a glass transition (Tg ) of 163 °C, and thermo-oxidative stability above 500 °C. Tough optically clear films prepared from solution give transmittance higher than 90% throughout the visible region. Synthesis, mechanistic aspects, and characterization including surface and dielectric properties are discussed.
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Affiliation(s)
- Gustavo Muñoz
- Department of Chemistry, Mississippi State University, MS State, MS, 39762, USA
| | - Kari M Chamberlain
- Department of Chemistry, Mississippi State University, MS State, MS, 39762, USA
| | - Sumudu Athukorale
- Department of Chemistry, Mississippi State University, MS State, MS, 39762, USA
| | - Guorong Ma
- School of Polymer Science and Engineering, The University of Southern Mississippi, Hattiesburg, MS, 39406, USA
| | - Xiaodan Gu
- School of Polymer Science and Engineering, The University of Southern Mississippi, Hattiesburg, MS, 39406, USA
| | - Charles U Pittman
- Department of Chemistry, Mississippi State University, MS State, MS, 39762, USA
| | - Dennis W Smith
- Department of Chemistry, Mississippi State University, MS State, MS, 39762, USA
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4
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Shelar KE, Mukeba KM, Mills K, Smith DW. Renewable isosorbide‐enchained semi‐fluorinated aromatic ether polymers. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ketki Eknath Shelar
- Department of Chemistry and MSU Advanced Composites Institute Mississippi State University Starkville Mississippi USA
| | - Karl M. Mukeba
- Department of Chemistry and MSU Advanced Composites Institute Mississippi State University Starkville Mississippi USA
| | - Kelly Mills
- Department of Chemistry and MSU Advanced Composites Institute Mississippi State University Starkville Mississippi USA
| | - Dennis W. Smith
- Department of Chemistry and MSU Advanced Composites Institute Mississippi State University Starkville Mississippi USA
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5
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Fukumoto H, Shiitsuka K, Yamada K, Yamada S, Konno T, Kubota T, Agou T. Synthesis and photoluminescence properties of fluorine‐containing poly(phenylene vinylene) bearing hexafluorocyclopentene‐fused phenanthrene unit. POLYM INT 2021. [DOI: 10.1002/pi.6291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hiroki Fukumoto
- Department of Quantum Beam Science Graduate School of Science and Engineering, Ibaraki University Hitachi Japan
| | - Kazuki Shiitsuka
- Department of Quantum Beam Science Graduate School of Science and Engineering, Ibaraki University Hitachi Japan
| | - Keisuke Yamada
- Department of Quantum Beam Science Graduate School of Science and Engineering, Ibaraki University Hitachi Japan
| | - Shigeyuki Yamada
- Faculty of Molecular Chemistry and Engineering Kyoto Institute of Technology Kyoto Japan
| | - Tsutomu Konno
- Faculty of Molecular Chemistry and Engineering Kyoto Institute of Technology Kyoto Japan
| | - Toshio Kubota
- Department of Quantum Beam Science Graduate School of Science and Engineering, Ibaraki University Hitachi Japan
| | - Tomohiro Agou
- Department of Quantum Beam Science Graduate School of Science and Engineering, Ibaraki University Hitachi Japan
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6
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Mukeba KM, Faradizaji B, Shelar KE, Pittman CU, Smith DW. Semi–fluorinated arylene vinylene ether (FAVE) telechelic polymers from polycyclic aromatic hydrocarbon bisphenols and trifluorovinyl aryl ethers. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122955] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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7
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Agou T, Yoshinari K, Shirai T, Yamada S, Konno T, Mizuhata Y, Tokitoh N, Yasuda S, Yamazaki T, Fukumoto H, Kubota T. Visible-Transparent Aromatic Polymers Obtained by the Polycondensation of a Bis(trifluorovinyl)benzene with Bisphenols. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00157] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tomohiro Agou
- Department of Quantum Beam Science, Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Nakanarusawa, Hitachi, Ibaraki 316-8511, Japan
| | - Kazuto Yoshinari
- Department of Quantum Beam Science, Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Nakanarusawa, Hitachi, Ibaraki 316-8511, Japan
| | - Tomohiro Shirai
- Department of Quantum Beam Science, Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Nakanarusawa, Hitachi, Ibaraki 316-8511, Japan
- Functional Materials Group, Research and Development Department, Tosoh Finechem Corporation, 4988 Kaisei-cho, Shunan, Yamaguchi 746-0006, Japan
| | - Shigeyuki Yamada
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Tsutomu Konno
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Yoshiyuki Mizuhata
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Norihiro Tokitoh
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Sana Yasuda
- Division of Applied Chemistry, Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei-shi, Tokyo 184-8588, Japan
| | - Takashi Yamazaki
- Division of Applied Chemistry, Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei-shi, Tokyo 184-8588, Japan
| | - Hiroki Fukumoto
- Department of Quantum Beam Science, Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Nakanarusawa, Hitachi, Ibaraki 316-8511, Japan
| | - Toshio Kubota
- Department of Quantum Beam Science, Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Nakanarusawa, Hitachi, Ibaraki 316-8511, Japan
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8
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Alvino EL, Lochmaier EC, Iacono ST, Jennings AR. Chemoselective nucleophilic additions to perfluorocyclopentene: An efficient building block to highly fluorinated molecules. J Fluor Chem 2020. [DOI: 10.1016/j.jfluchem.2020.109454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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9
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Wu M, Xu J, Bai S, Chen X, Yu X, Naito K, Zhang Z, Zhang Q. A high-performance functional phthalonitrile resin with a low melting point and a low dielectric constant. SOFT MATTER 2020; 16:1888-1896. [PMID: 31994579 DOI: 10.1039/c9sm02328c] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A monomer of fluorinated phthalonitrile, namely 4,4'-bis(p-perfluoro-phenol-(bis(p-phenol)propane-2,2-diyl)-p-oxy-diphthalonitrile) (PBDP), was synthesized by the nucleophilic substitution reaction of bisphenol A, decafluorobiphenyl and 4-nitrophthalonitrile. The structure of the monomer was characterized by nuclear magnetic resonance (NMR) spectroscopy and Fourier transform infrared (FTIR) spectroscopy. The results indicated that the PBDP monomer was synthesized successfully. The monomer was cured in the presence of 4-(aminophenoxy)phthalonitrile (APPH) and the curing behaviour was investigated by differential scanning calorimetry (DSC), suggesting a low melting point of 96 °C and an excellent processing window (96-262 °C). Thermogravimetric analysis (TGA) and dynamic mechanical analysis (DMA) showed that the fluorinated phthalonitrile resin possessed outstanding thermal and thermo-oxidative stabilities as well as good mechanical properties. The glass transition temperature was >400 °C and the 5% thermal degradation temperature was 501 °C. When the frequency was 50 MHz, the dielectric constant and dielectric loss of the polymer were 2.84 and 0.007, respectively. The PBDP resin has ultra-low water absorption of 0.77% and 1.4%, when exposed to an aqueous environment for 50 days at 24 °C and for 24 h at 100 °C, respectively. The prepared PBDP resin with outstanding thermal stability and low dielectric constant is an ideal candidate for aerospace industries, and microelectronic and other electronic packaging materials.
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Affiliation(s)
- Minjie Wu
- Hebei Key Laboratory of Functional Polymers, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China.
| | - Jianjun Xu
- Hebei Key Laboratory of Functional Polymers, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China.
| | - Shengnan Bai
- Hebei Key Laboratory of Functional Polymers, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China.
| | - Xinggang Chen
- Hebei Key Laboratory of Functional Polymers, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China.
| | - Xiaoyan Yu
- Hebei Key Laboratory of Functional Polymers, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China.
| | - Kimiyoshi Naito
- National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba 305-0047, Japan
| | - Zhenjiang Zhang
- College of Chemistry and Materials Science, Ludong University, Yantai, 264025, China
| | - Qingxin Zhang
- Hebei Key Laboratory of Functional Polymers, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China. and Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology, Hebei University of Technology, Tianjin 300130, China
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10
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Tsunemi T, Bernardino SJ, Mendoza A, Jones CG, Harran PG. Syntheses of Atypically Fluorinated Peptidyl Macrocycles through Sequential Vinylic Substitutions. Angew Chem Int Ed Engl 2020; 59:674-678. [PMID: 31693283 DOI: 10.1002/anie.201910136] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 10/09/2019] [Indexed: 12/12/2022]
Abstract
Small peptides containing combinations of cysteine, tyrosine, histidine, and serine residues react with octafluorocyclopentene (OFCP) to afford atypically structured macrocycles through successive vinylic substitutions. The reactions proceed rapidly in air at 0 °C and are tolerant of spectating tryptophan, asparagine, glutamine, and threonine residues. Hexapeptides of consensus sequence YXCXXC displace four fluorine atoms from OFCP to generate fluorinated macrobicyclic compounds that display dual-turn surfaces. The method provides facile access to a wide range of previously unknown heterocyclic structures.
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Affiliation(s)
- Tomoyuki Tsunemi
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, USA.,Medicinal Chemistry Research Laboratories, Daiichi Sankyo Co., Ltd., Tokyo, Japan
| | - Salvador J Bernardino
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, USA
| | - Angel Mendoza
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, USA
| | - Christopher G Jones
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, USA
| | - Patrick G Harran
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, USA
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11
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Narayanan G, Faradizaji B, Mukeba KM, Shelar KE, De Silva M, Patrick A, Donnadieu B, Smith DW. Perfluorocyclohexenyl (PFCH) aromatic ether polymers from perfluorocyclohexene and polycyclic aromatic bisphenols. Polym Chem 2020. [DOI: 10.1039/d0py00569j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Semi-fluorinated Perfluorocycloalkenyl (PFCA) aromatic polymers prepared from polycyclic aromatic hydrocarbon (PAH) bisphenols and contain reactive fluoroalkene linkages.
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Affiliation(s)
- Ganesh Narayanan
- Department of Chemistry and The Marvin B. Dow Advanced Composites Institute
- Mississippi State University
- Starkville
- USA
| | - Behzad Faradizaji
- Department of Chemistry and The Marvin B. Dow Advanced Composites Institute
- Mississippi State University
- Starkville
- USA
| | - Karl M. Mukeba
- Department of Chemistry and The Marvin B. Dow Advanced Composites Institute
- Mississippi State University
- Starkville
- USA
| | - Ketki E. Shelar
- Department of Chemistry and The Marvin B. Dow Advanced Composites Institute
- Mississippi State University
- Starkville
- USA
| | - Maleesha De Silva
- Department of Chemistry and The Marvin B. Dow Advanced Composites Institute
- Mississippi State University
- Starkville
- USA
| | - Amanda Patrick
- Department of Chemistry and The Marvin B. Dow Advanced Composites Institute
- Mississippi State University
- Starkville
- USA
| | - Bruno Donnadieu
- Department of Chemistry and The Marvin B. Dow Advanced Composites Institute
- Mississippi State University
- Starkville
- USA
| | - Dennis W. Smith
- Department of Chemistry and The Marvin B. Dow Advanced Composites Institute
- Mississippi State University
- Starkville
- USA
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12
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Tsunemi T, Bernardino SJ, Mendoza A, Jones CG, Harran PG. Syntheses of Atypically Fluorinated Peptidyl Macrocycles through Sequential Vinylic Substitutions. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201910136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Tomoyuki Tsunemi
- Department of Chemistry and Biochemistry University of California Los Angeles CA USA
- Medicinal Chemistry Research Laboratories Daiichi Sankyo Co., Ltd. Tokyo Japan
| | | | - Angel Mendoza
- Department of Chemistry and Biochemistry University of California Los Angeles CA USA
| | - Christopher G. Jones
- Department of Chemistry and Biochemistry University of California Los Angeles CA USA
| | - Patrick G. Harran
- Department of Chemistry and Biochemistry University of California Los Angeles CA USA
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13
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14
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Fukumoto H, Ando M, Shiota T, Izumiya H, Kubota T. Efficient Synthesis of Fluorinated Phenanthrene Monomers Using Mallory Reaction and Their Copolymerization. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02151] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Hiroki Fukumoto
- College of Engineering,
Department
of Biomolecular Functional Engineering, Ibaraki University, 4-12-1, Naka-narusawa, Hitachi 316-8511, Japan
| | - Masatoshi Ando
- College of Engineering,
Department
of Biomolecular Functional Engineering, Ibaraki University, 4-12-1, Naka-narusawa, Hitachi 316-8511, Japan
| | - Tomomi Shiota
- College of Engineering,
Department
of Biomolecular Functional Engineering, Ibaraki University, 4-12-1, Naka-narusawa, Hitachi 316-8511, Japan
| | - Hirokazu Izumiya
- College of Engineering,
Department
of Biomolecular Functional Engineering, Ibaraki University, 4-12-1, Naka-narusawa, Hitachi 316-8511, Japan
| | - Toshio Kubota
- College of Engineering,
Department
of Biomolecular Functional Engineering, Ibaraki University, 4-12-1, Naka-narusawa, Hitachi 316-8511, Japan
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15
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Knauer KM, Jennings AR, Bristol AN, Iacono ST, Morgan SE. Enhanced Surface Properties of Branched Poly(ether sulfone) from Semifluorinated Polyhedral Oligomeric Silsequioxanes. ACS APPLIED MATERIALS & INTERFACES 2016; 8:12434-12444. [PMID: 27096284 DOI: 10.1021/acsami.6b01936] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Hybrid systems in which poly(ether sulfone) (PESU) chains are grafted to semifluorinated polyhedral oligomeric silsesquioxane (POSS) cores are expected to integrate the advantages of both fluoropolymers and POSS into the polymer system to yield excellent surface properties. For that purpose, we synthesized a novel octa-functional perfluorocyclopentenyl-POSS (PFCP-POSS), which was used as a "core" grafting point. Commercial PESU was successfully grafted to PFCP-POSS via the nucleophilic addition-elimination reaction between the phenolic chain ends and reactive PFCP moieties to yield a hybrid branched polymer possessing a semifluorinated POSS core. X-ray photoelectron spectroscopy, neutron reflectivity, and atomic force microscopy indicated that the preparation of nanostructured polymer surfaces occurs by migration of the low surface energy components (PFCP-POSS molecules), while POSS aggregation is suppressed by covalent attachment to the long PESU chains. The resulting PFCP-POSS modified PESU films were highly transparent and yielded hydrophobic surfaces with low surface energy and high modulus for potential applications in high performance coatings and composites.
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Affiliation(s)
- Katrina M Knauer
- The University of Southern Mississippi , School of Polymers and High Performance Materials, 118 College Drive # 5050, Hattiesburg, Mississippi 39406, United States
| | - Abby R Jennings
- United States Air Force Academy , Department of Chemistry and Chemistry Research Center, 2355 Fairchild Drive Suit 2N225, Colorado Springs, Colorado 80840, United States
| | - Ashleigh N Bristol
- The University of Southern Mississippi , School of Polymers and High Performance Materials, 118 College Drive # 5050, Hattiesburg, Mississippi 39406, United States
| | - Scott T Iacono
- United States Air Force Academy , Department of Chemistry and Chemistry Research Center, 2355 Fairchild Drive Suit 2N225, Colorado Springs, Colorado 80840, United States
| | - Sarah E Morgan
- The University of Southern Mississippi , School of Polymers and High Performance Materials, 118 College Drive # 5050, Hattiesburg, Mississippi 39406, United States
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16
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Brown DK, Iacono ST, Cracowski J, Christensen K, Smith DW. Synthesis and characterization of a biphenyl perfluorocyclobutyl (BP‐PFCB) polyethylene glycol (PEG) blend compatibilizer. POLYM ADVAN TECHNOL 2016. [DOI: 10.1002/pat.3808] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Dakarai K. Brown
- Department of Chemistry and Center for Optical Materials Science and Engineering Technologies (COMSET) Clemson University Clemson SC 29634 USA
| | - Scott T. Iacono
- Department of Chemistry and Center for Optical Materials Science and Engineering Technologies (COMSET) Clemson University Clemson SC 29634 USA
- Department of Chemistry and Chemistry Research Center United States Air Force Academy 2355 Fairchild Drive, 2N225 Colorado Springs CO 80840 USA
| | - Jean‐Marc Cracowski
- Department of Chemistry and Center for Optical Materials Science and Engineering Technologies (COMSET) Clemson University Clemson SC 29634 USA
| | - Kenneth Christensen
- Department of Chemistry and Center for Optical Materials Science and Engineering Technologies (COMSET) Clemson University Clemson SC 29634 USA
| | - Dennis W. Smith
- Department of Chemistry and Center for Optical Materials Science and Engineering Technologies (COMSET) Clemson University Clemson SC 29634 USA
- Department of Chemistry and The Alan G. MacDiramid NanoTech Institute The University of Texas at Dallas Richardson TX 75080 USA
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17
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Godman NP, Barbee DB, Carty FB, McMillen CD, Corley CA, Shurdha E, Iacono ST. Synthesis, characterization, and electrochemical properties of new highly processable, hole-transporting fluorocyclic aryl amine polymers. Polym Chem 2016. [DOI: 10.1039/c6py00966b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Perfluorocyclopentene (PFCP) aryl ether amine polymers demonstrate excellent solution processing into optically transparent, electrochemically active films as a potential hole-transporting layer material for organic electronic devices.
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Affiliation(s)
- N. P. Godman
- Department of Chemistry and Chemistry Research Center
- United States Air Force Academy
- Colorado Springs
- USA
| | - D. B. Barbee
- Department of Chemistry and Chemistry Research Center
- United States Air Force Academy
- Colorado Springs
- USA
| | - F. B. Carty
- Department of Chemistry and Chemistry Research Center
- United States Air Force Academy
- Colorado Springs
- USA
| | | | - C. A. Corley
- Department of Chemistry and Chemistry Research Center
- United States Air Force Academy
- Colorado Springs
- USA
| | - E. Shurdha
- Department of Chemistry and Chemistry Research Center
- United States Air Force Academy
- Colorado Springs
- USA
| | - S. T. Iacono
- Department of Chemistry and Chemistry Research Center
- United States Air Force Academy
- Colorado Springs
- USA
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18
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Li SJ, Shen D, Zhang CZ. Synthesis and crystal structure of 2-(4-hydroxyphenyl)-1,1,1,3,3,3-hexafluoropropan-2-ol. CRYSTALLOGR REP+ 2015. [DOI: 10.1134/s1063774515060176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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19
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Wu J, Xi Y, McCandless GT, Xie Y, Menon R, Patel Y, Yang DJ, Iacono ST, Novak BM. Synthesis and Characterization of Partially Fluorinated Polybenzoxazine Resins Utilizing Octafluorocyclopentene as a Versatile Building Block. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01014] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | | | | | - Scott T. Iacono
- Department
of Chemistry and Chemistry Research Center, United States Air Force Academy, Colorado Springs, Colorado 80840, United States
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20
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Olvera LI, Zolotukhin MG, Hernández-Cruz O, Fomine S, Cárdenas J, Gaviño-Ramírez RL, Ruiz-Trevino FA. Linear, Single-Strand Heteroaromatic Polymers from Superacid-Catalyzed Step-Growth Polymerization of Ketones with Bisphenols. ACS Macro Lett 2015; 4:492-494. [PMID: 35596292 DOI: 10.1021/acsmacrolett.5b00164] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Novel, linear, high-molecular-weight single-strand heteroaromatic polymers and copolymers containing 9H-xanthene moieties in the backbone were synthesized by metal-free superacid-catalyzed stoichiometric and nonstoichiometric step-growth polymerizations of carbonyl compounds bearing electron-withdrawing substituents with bisphenols. The electrophilic aromatic substitution reactions of ketones with phenol fragments occur exclusively in ortho-positions to the hydroxy phenol group and followed by highly efficient cyclodehydration reaction of hydroxyl-containing intermediates to give corresponding substituted 9H-xanthene-2,7-diyl polymers. The polymerizations were performed at room temperature in the Brønsted superacid trifluoromethanesulfonic acid (CF3SO3H, TFSA) and in a mixture of TFSA with methylene chloride and nitrobenzene.
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Affiliation(s)
- Lilian I. Olvera
- Instituto
de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apartado Postal 70-360, CU Coyoacán, 04510 México D. F., México
| | - Mikhail G. Zolotukhin
- Instituto
de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apartado Postal 70-360, CU Coyoacán, 04510 México D. F., México
| | - Olivia Hernández-Cruz
- Instituto
de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apartado Postal 70-360, CU Coyoacán, 04510 México D. F., México
| | - Sergei Fomine
- Instituto
de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apartado Postal 70-360, CU Coyoacán, 04510 México D. F., México
| | - Jorge Cárdenas
- Instituto
de Química, Universidad Nacional Autónoma de México, Apartado Postal 70-360, CU Coyoacán, 04510 México D. F., México
| | - Rubén L. Gaviño-Ramírez
- Instituto
de Química, Universidad Nacional Autónoma de México, Apartado Postal 70-360, CU Coyoacán, 04510 México D. F., México
| | - Fransico A. Ruiz-Trevino
- Departamento
de Ingeniería y de Ingeniería y Ciencias Químicas, Universidad Iberoamericana, Prol. Paseo de la Reforma No. 880, 01219 México D.F., México
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21
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Ranganathan K, Anbanandam P. Soluble, microporous ladder polymers formed by stepwise nucleophilic substitution of octafluorocyclopentene. Polym Chem 2015. [DOI: 10.1039/c5py00359h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of ladder polymers were prepared by reacting octafluorocyclopentene (OFCP) with various bisphenols at or above room temperature. The ladder polymers were synthesized in one or two steps with similar or different bisphenols due to different reactivities of fluorine atoms at vinylic (1,5) and (2,4) allylic positions of OFCP.
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Affiliation(s)
- Krishnan Ranganathan
- Institute of Chemical and Engineering Sciences
- Agency for Science
- Technology and Research (A*STAR)
- Jurong Island
- Singapore 627833
| | - Parthiban Anbanandam
- Institute of Chemical and Engineering Sciences
- Agency for Science
- Technology and Research (A*STAR)
- Jurong Island
- Singapore 627833
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22
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Wu J, Xi Y, McCandless GT, Kulikov OV, Menon R, Novak BM. Synthesis and characterization of a novel fluorinated bismaleimide via a nucleophilic addition–elimination reaction and its polymeric networks. RSC Adv 2015. [DOI: 10.1039/c5ra13771c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
A novel fluorinated bismaleimide, OFCP-BMI, was designed and readily synthesized via the nucleophilic addition–elimination reaction of octafluorocyclopentene with maleimide-functionalized phenol.
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Affiliation(s)
- Jingbo Wu
- Department of Chemistry and the Alan G. MacDiarmid NanoTech Institute
- The University of Texas at Dallas
- Richardson
- USA
| | - Yang Xi
- Department of Science and Engineering
- University of Texas at Dallas
- Richardson
- USA
| | - Gregory T. McCandless
- Department of Chemistry and the Alan G. MacDiarmid NanoTech Institute
- The University of Texas at Dallas
- Richardson
- USA
| | - Oleg V. Kulikov
- Department of Chemistry and the Alan G. MacDiarmid NanoTech Institute
- The University of Texas at Dallas
- Richardson
- USA
| | - Remya Menon
- Department of Chemistry and the Alan G. MacDiarmid NanoTech Institute
- The University of Texas at Dallas
- Richardson
- USA
| | - Bruce M. Novak
- Department of Chemistry and the Alan G. MacDiarmid NanoTech Institute
- The University of Texas at Dallas
- Richardson
- USA
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23
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Tian S, Sun J, Jin K, Wang J, He F, Zheng S, Fang Q. Postpolymerization of a fluorinated and reactive poly(aryl ether): an efficient way to balance the solubility and solvent resistance of the polymer. ACS APPLIED MATERIALS & INTERFACES 2014; 6:20437-20443. [PMID: 25350608 DOI: 10.1021/am506019s] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A new fluorinated poly(aryl ether) with reactive benzocyclobutene groups as the side chain was successfully synthesized. This polymer showed a number-average molecular weight (Mn) of 200,000 and had good solubility and film-forming ability. After being postpolymerized at high temperature (>200 °C), the polymer film converted to a cross-linked network structure, which was insoluble in the common organic solvents. Such results suggest that the postpolymerization is an efficient way to achive the balance between the solubility and the solvent resistance of the polymer. TGA data showed that the postpolymerized polymer had a 5 wt % loss temperature at 495 °C and a residual of 61% at 1000 °C under N2. The cross-linked film also exhibited good dielectric properties with an average dielectric constant of about 2.62 in a range of frequencies from 1 to 30 MHz. With regard to the mechanical properties, the cross-linked film had hardness, Young's modulus, and bonding strength to a silicon wafer of 1.22, 8.8, and 0.89 GPa, respectively. These data imply that this new polymer may have potential applications in the electrical and microelectronics industry.
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Affiliation(s)
- Song Tian
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road, Shanghai 200032, P. R. China
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24
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Campos R, Mansur AA, Cook CH, Batchelor B, Iacono ST, Smith DW. AB-type monomers for the preparation of perfluorocycloalkene (PFCA) aryl ether polymers. J Fluor Chem 2014. [DOI: 10.1016/j.jfluchem.2014.07.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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25
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Triarylamine-enchained semifluorinated perfluorocycloalkenyl (PFCA) aryl ether polymers. APPLIED PETROCHEMICAL RESEARCH 2014. [DOI: 10.1007/s13203-014-0063-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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26
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Sharma B, Hill SC, Liff SM, Pennington WT, Smith DW. Perfluorocyclohexenyl aryl ether polymers via polycondensation of decafluorocyclohexene with bisphenols. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26995] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Babloo Sharma
- Department of Chemistry and The Alan G. MacDiarmid NanoTech InstituteThe University of Texas at DallasRichardson Texas75080
| | - Sarah C. Hill
- Department of ChemistryClemson UniversityClemson South Carolina29630
| | | | | | - Dennis W. Smith
- Department of Chemistry and The Alan G. MacDiarmid NanoTech InstituteThe University of Texas at DallasRichardson Texas75080
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27
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Krishnan R, Parthiban A. Semifluorinated multiple pendant group bearing poly(arylene ether) copolymers prepared at room temperature. JOURNAL OF POLYMER RESEARCH 2013. [DOI: 10.1007/s10965-013-0230-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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28
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Sharma B, VanDerveer DG, Liff SM, Smith DW. Bis-perfluorocycloalkenyl (PFCA) aryl ether monomers towards a versatile class of semi-fluorinated aryl ether polymers. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.04.087] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Dei DK, Lund BR, Wu J, Simon D, Ware T, Voit WE, MacFarlane D, Liff SM, Smith DW. High Performance and Multipurpose Triarylamine-Enchained Semifluorinated Polymers. ACS Macro Lett 2013; 2:35-39. [PMID: 35581822 DOI: 10.1021/mz300532z] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Transparent, film-forming fluorinated arylene vinylene ether (FAVE) polymers with enchained triarylamine (TAA) moieties were prepared and characterized. Control over fluoro-olefin content within the backbone, as a function of base, was confirmed and postpolymerization dehydrofluorination was shown to increase fluoroolefin content from 5 to 31 mol %. Thermal cross-linking was found to occur approximately 100 °C lower than in traditional FAVE polymers (ca. 160 °C). Electrochemical analysis demonstrated the enchained TAA retained its established electrochemical character. The latent reactivity of the TAA was explored via electrophilic aromatic substitution and formylation reactions toward precise functionalization for specific electro-optic applications and others.
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Affiliation(s)
| | | | | | | | | | | | | | - Shawna M. Liff
- Intel Corporation, Chandler, Arizona 85226, United
States
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30
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