Journal ArticleDOI
Linear, Single-Strand Heteroaromatic Polymers from Superacid-Catalyzed Step-Growth Polymerization of Ketones with Bisphenols
Lilian I. Olvera,Mikhail G. Zolotukhin,Olivia Hernández-Cruz,Sergei Fomine,Jorge Cárdenas,Rubén L. Gaviño-Ramírez,Fransico A. Ruiz-Trevino +6 more
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TLDR
In this paper, a 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.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 Bronsted superacid trifluoromethanesulfonic acid (CF3SO3H, TFSA) and in a mixture of TFSA with methylene chloride and nitrobenzene.read more
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Sulfonated microporous polymer membranes with fast and selective ion transport for electrochemical energy conversion and storage
Peipei Zuo,Yuanyuan Li,Anqi Wang,Rui Tan,Yahua Liu,Xian Liang,Fangmeng Sheng,Gonggeng Tang,Liang Ge,Liang Wu,Qilei Song,Neil B. McKeown,Zhengjin Yang,Tongwen Xu +13 more
TL;DR: A new approach to designing solution-processable ion-selective polymer membranes with both intrinsic microporosity and ion-conductive functionality is reported, paving the way for producing a new-generation of ion-exchange membranes for electrochemical energy conversion and storage applications.
Journal ArticleDOI
Self-Accelerating Click Reaction in Step Polymerization
TL;DR: In this article, a self-accelerating double-strain-promoted azide-alkyne cycloaddition reaction was used in the step polymerization for the first time.
Journal ArticleDOI
Functional Poly(ester–amide)s with Tertiary Ester Linkages via the Passerini Multicomponent Polymerization of a Dicarboxylic Acid and a Diisocyanide with Different Electron-Deficient Ketones
TL;DR: In this article, a new family of functional poly(esteramide)s with tertiary ester linkages via the Passerini multicomponent polymerization (Passerini-MCP) of a diacid (A2), 1,6-diisocyanohexane (B2), and four kinds of electron-deficient ketones was described.
Journal ArticleDOI
Step-Growth Polymerization Method for Ultrahigh Molecular Weight Polymers
TL;DR: In this paper, a double-strain-promoted azide-alkyne click reaction (DSPAAC) with a reactive intermediate was used as the polymerization reaction, and sym-dibenzo-1,5-cyclooctadiene-3,7-diyne (DIBOD) and bis-azide compounds with 2,6-diisopropylphenyl azide terminals were used as monomer pairs.
Journal ArticleDOI
A Highly Soluble, Fully Aromatic Fluorinated 3D Nanostructured Ladder Polymer
Lilian I. Olvera,Manuel Rodríguez-Molina,F. Alberto Ruiz-Treviño,Mikhail G. Zolotukhin,Serguei Fomine,Jorge Cárdenas,Rubén Gaviño,Larissa Alexandrova,Rubén A. Toscano,Eduardo Martínez-Mercado +9 more
TL;DR: In this article, a ladder polymer was obtained by the superacid-catalyzed, nonstoichiometric, step polymerization of a xanthenediol with trifluoroacetone.
References
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Journal ArticleDOI
Science and technology of perfluorocyclobutyl aryl ether polymers
TL;DR: In this paper, the preparation of perfluorocyclobutyl (PFCB) aryl ether polymers for a multitude of commercial technologies that are of academic and commercial global interest is discussed.
Journal ArticleDOI
Dramatic Enhancement of Superacid-Catalyzed Polyhydroxyalkylation Reactions
Maria T. Guzmán-Gutiérrez,Daniel Nieto,Serguei Fomine,Salvador López Morales,Mikhail G. Zolotukhin,M. Carmen G. Hernandez,Hans R. Kricheldorf,Edward S. Wilks +7 more
TL;DR: In this paper, the principal factors affecting kinetics of superacid mediated polyhydroxyalkylation reactions were found to be as follows: (i) the acidity of the superacid affecting protonation energy of carbonyl components; (ii) the electrophilicity and nucleophilicity of aromatic components.
Journal ArticleDOI
Bidentate phosphines of heteroarenes : 9,9-dimethyl-4,5-bis(diphenylphosphino)xanthene
TL;DR: In this article, two-fold lithiation of 9,9-dimethylxanthene with n-butyllithium and N,N,N N′,N′, N′-tetrametylethylenediamine (TMEDA) in boiling n-heptane followed by reaction with chlorodiphenylphosphine (Ph2PCl) yielded the title compound 4.1
Journal ArticleDOI
Novel High Molecular Weight Aromatic Fluorinated Polymers from One-Pot, Metal-Free Step Polymerizations
Lilian I. Olvera,Martía T. Guzmán-Gutiérrez,Mikhail G. Zolotukhin,Sergei Fomine,Jorge Cárdenas,F.A. Ruiz-Treviño,D. Villers,Tiberio A. Ezquerra,Evgen Prokhorov +8 more
TL;DR: In this article, a series of linear, high-molecular-weight polymers and copolymers were synthesized by one-pot, metal-free superacid-catalyzed reaction of trifluoromethylalkyl (1a, 1c, 1f, 1h) bearing functional groups with the linear, nonactivated, multiring aromatic hydrocarbons biphenyl (A), p-terphenyl (B), and p-quaterphenyl(C).
Journal ArticleDOI
Perfluorocyclopentenyl (PFCP) Aryl Ether Polymers via Polycondensation of Octafluorocyclopentene with Bisphenols
Jean Marc Cracowski,Babloo Sharma,Dakarai K. Brown,Kenneth A. Christensen,Benjamin R. Lund,Dennis W. Smith +5 more
TL;DR: In this article, a unique class of aromatic ether polymers containing perfluorocyclopentenyl (PFCP) enchainment was prepared from the simple step growth polycondensation of commercial bisphenols and OFCP in the presence of triethylamine.