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Group of microporous polymers

Department of physical and macromolecular chemistry  Faculty of Science UK

Charles University

 

Head of group
doc. RNDr. Jan Sedláček, Dr.
jan.sedlacek@natur.cuni.cz

 

Post-docs

Bogdana Bashta Ph.D. (2017)

 

Ph.D. students

Mgr. Alena Hašková
Mgr. Lucie Havelková

 

 

 

 

 

 

Master's students

 

Bc. Jiří Sokol
Bc. David Šorm
Bc. Yulia Zhernakov

 

Former group members

 Moataz Elsawy Ph.D. (2016)

 

Mgr. Sabina Stahlová Ph.D.
RNDr. Eva Slováková, Ph.D.
Mgr. Radoslava Sivkova Ph.D.

 

 

 

 

 

Mgr. Tomáš Faukner Ph.D.

 

 

 

 

 

 

 

 

The aims of our research

     

The development of porous materials with permanent micropores (diameter up to 2 nm) and/or mesopores (diameter 2 – 50 nm) and a large specific surface area (hundreds to several thousands m2/g) belongs to the most important scopes of the contemporary material research. The materials of this type are interesting for their catalytic and sorption applications. The micro/mesoporous materials could serve as heterogeneous catalysts or as supports for anchoring the homogeneous catalysts, however, they can also be used for gas trapping, separation and storage and for a selective adsorption of solutes from the solutions. In the last decade, the research in this field was extended by a new class of porous materials mostly referred to as “Microporous Organic Polymers” (MOPs). MOPs are hydrocarbon polymers often containing heteroatoms like O, N, F, S, Cl and possessing exclusively covalent bonding of the atoms and functional groups. Most MOPs have the architecture of polymer networks composed of densely cross-linked rigid segments. This architecture prevents a tight packing of the polymer segments which results in the formation of permanent micropores in the network. The formation of the mesopores in MOPs proceeds via a covalent interconnecting of small particles of microporous network.

Our group is interested in development and synthesis of conjugated MOPs and revealing the relations between the methods and conditions of the preparation on one side and structural, textural and functional parameters of the prepared MOPs on the other side. The conjugation contributes to the rigidity and porous texture of MOPs, moreover, thanks to a proper character of conjugation, MOPs can exhibit interesting functional properties such as photoluminescence. We apply mainly functional arylacetylenes as the building blocks and both catalyzed and catalyst-free chain-growth polymerizations and polycyclotrimerizations for their transformation into conjugated MOPs. The polymerizations require a proper tuning to provide MOPs with desirable amount and size of the pores. The chemical composition of the pore surface represents another variable important for the applications. The composition, structure and texture characteristics of MOPs are mostly obtained by means of IR, UV/VIS, fluorescence and 13C CP/MAS NMR spectroscopy, electron microscopy and adsorption techniques.

An important question is whether the MOPs prepared by us possess desirable functional properties. We are addressing this question within the framework of cooperation with various “friendly” institutions, for example: Jaroslav Heyrovský Institute of Physical Chemistry (The Czech Academy of Sciences) and University of Chemistry and Technology in Prague. And the answer? Some prepared MOPs exhibit a high adsorption capacity for carbon dioxide and vapor of lower alcohols, other MOPs are efficient organocatalysts. And still others: here an alternative procedure of the polymerization or a postpolymerization modification will be necessary to improve the functional properties. If you want to participate in solving these problems and develop your bachelor's, master's or doctoral thesis on the theme of MOPs, come and visit our laboratory.

 

Publications

Synthesis of hyper-cross-linked microporous poly(phenylacetylene)s having aldehyde and other groups and their chemisorption and physisorption ability

 

Lucie Havelková, Alena Hašková, Bogdana Bashta, Jiří Brus, Miloslav Lhotka, Eva Vrbová, Martin Kindl, Eliška Vyskočilová and Jan Sedláček

European Polymer Journal 2019

DOI: 10.1016/j.eurpolymj.2019.02.039


Homo- and Copolycyclotrimerization of Aromatic Internal Diynes Catalyzed with Co2(CO)8: A Facile Route to Microporous Photoluminescent Polyphenylenes with Hyperbranched or Crosslinked Architecture

Jan Sedláček, Jiří Sokol, Jiří Zedník, Tomáš Faukner, Martin Kubů, Jiří Brus and Olga Trhlíková

Macromol. Rapid Commun., 2017

DOI: 10.1002/marc.201700518


Substituted Polyacetylenes Prepared with Rh Catalysts: From Linear to Network-Type Conjugated Polymers

Jan Sedláček and Hynek Balcar

Polymer Reviews, 2017

 

DOI: 10.1080/15583724.2016.1144207


Microporous conjugated polymers via homopolymerization of 2,5-diethynylthiophene

Dmitrij Bondarev, Radoslava Sivkova, Pavol Šuly, Martina Polášková, Ondřej Krejčí, Radka Křikavová, Zdeněk Trávníček, Arnošt Zukal, Martin Kubů and Jan Sedláček

 

DOI: 10.1016/j.eurpolymj.2017.04.042


Unexpectedly Facile Rh(I) Catalyzed Polymerization of Ethynylbenzaldehyde Type Monomers: Synthesis of Polyacetylenes Bearing Reactive and Easy Transformable Pendant Carbaldehyde Groups

 

Jan Sedláček, Lucie Havelková, Jiří Zedník, Radek Coufal, Tomáš Faukner, Hynek Balcar and Jiří Brus

Macromol. Rapid Commun., 2017

 

DOI: 10.1002/marc.201600792


Ionic π-Conjugated Polymer Networks by Catalyst-Free Polymerization, Photoluminescence and Gas Sorption Behavior

Tomáš Faukner, Arnošt Zukal, Jiří Brus, Jiří Zedník and Jan Sedláček

Macromol. Chem. Phys., 2016

 

DOI: 10.1002/macp.201600092


 

 

Copolymerization of N-(prop-1-yne-3-yl)-4-(piperidine-1-yl)-1,8-naphthalimide with Arylacetylenes into Fluorescent Polyacetylene-Type Conjugated Polymers

Radoslava Sivkova, Olga Trhlíková, Jiří Zedník and Jan Sedláček

Macromol. Chem. Phys., 2015, 216, pp 2115–2128

 

DOI: 10.1002/macp.201500240


 

 

Chain-growth copolymerization of functionalized ethynylarenes with 1,4-diethynylbenzene and 4,4′-diethynylbiphenyl into conjugated porous networks

 

Sabina Stahlová, Eva Slováková, Petra Vaňkátová, Arnošt Zukal, Martin Kubů, Jiří Brus, Dmitrij Bondarev, Robert Moučka, Jan Sedláček

European Polymer Journal, 2015, 67, pp 252-263

 

DOI: 10.1016/j.eurpolymj.2015.03.070


 

 

Chain-Growth Insertion Polymerization of 1,3-Diethynylbenzene High Internal Phase Emulsions into Reactive π-Conjugated Foams

Eva Slováková, Marjan Ješelnik, Ema Žagar, Jiří Zedník, Jan Sedláček and Sebastijan Kovačič

Macromolecules, 2014, 47 (15), pp 4864–4869

 

DOI: 10.1021/ma501142d


 

 

Transition-Metal-Catalyzed Chain-Growth Polymerization of 1,4-Diethynylbenzene into Microporous Crosslinked Poly(phenylacetylene)s: the Effect of Reaction Conditions

Eva Slováková, Arnošt Zukal, Jiří Brus, Hynek Balcar, Libor Brabec, Dmitrij Bondarev and Jan Sedláček

Macromol. Chem. Phys., 2014, 215, pp 1855–1869

 

DOI: 10.1002/macp.201400198


 

 

New Hyper-Crosslinked Partly Conjugated Networks with Tunable Composition by Spontaneous Polymerization of Ethynylpyridines with Bis(bromomethyl)arenes: Synthesis, Spectral Properties, and Activity in CO2 Capture

Sabina Petrášová, Arnoš Zukal, Jiří Brus, Hynek Balcar, Jakub Pastva, Jiří Zedník and Jan Sedláček

Macromol. Chem. Phys., 2013, 214, pp 2856–2866

 

DOI: 10.1002/macp.201300540


 

 

Polycyclotrimers of 1,4-Diethynylbenzene, 2,6-Diethynylnaphthalene, and 2,6-Diethynylanthracene: Preparation and Gas Adsorption Properties

Arnošt Zukal, Eva Slováková, Hynek Balcar and Jan Sedláček

Macromol. Chem. Phys., 2013, 214, pp 2016–2026

 

DOI: 10.1002/macp.201300317


 

 

Polyacetylene-Type Networks Prepared by Coordination Polymerization of Diethynylarenes: New Type of Microporous Organic Polymers

Vladimíra Hanková, Eva Slováková, Jiří Zedník, Jiří Vohlídal, Radoslava Sivkova, Hynek Balcar, Arnošt Zukal, Jiří Brus and Jan Sedláček

Macromol. Rapid Commun., 2012, 33, pp 158–163

 

DOI10.1002/marc.201100599


 

 

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