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Garemark J, Perea-Buceta JE, Rico del Cerro D, Hall S, Berke B, Kilpeläinen I, Berglund LA, Li Y. Nanostructurally Controllable Strong Wood Aerogel toward Efficient Thermal Insulation. ACS Appl Mater Interfaces 2022; 14:24697-24707. [PMID: 35511115 PMCID: PMC9164199 DOI: 10.1021/acsami.2c04584] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 04/22/2022] [Indexed: 06/14/2023]
Abstract
Eco-friendly materials with superior thermal insulation and mechanical properties are desirable for improved energy- and space-efficiency in buildings. Cellulose aerogels with structural anisotropy could fulfill these requirements, but complex processing and high energy demand are challenges for scaling up. Here we propose a scalable, nonadditive, top-down fabrication of strong anisotropic aerogels directly from wood with excellent, near isotropic thermal insulation functions. The aerogel was obtained through cell wall dissolution and controlled precipitation in lumen, using an ionic liquid (IL) mixture comprising DMSO and a guanidinium phosphorus-based IL [MTBD][MMP]. The wood aerogel shows a unique structure with lumen filled with nanofibrils network. In situ formation of a cellulosic nanofibril network in the lumen results in specific surface areas up to 280 m2/g and high yield strengths >1.2 MPa. The highly mesoporous structure (average pore diameter ∼20 nm) of freeze-dried wood aerogels leads to low thermal conductivities in both the radial (0.037 W/mK) and axial (0.057 W/mK) directions, showing great potential as scalable thermal insulators. This synthesis route is energy efficient with high nanostructural controllability. The unique nanostructure and rare combination of strength and thermal properties set the material apart from comparable bottom-up aerogels. This nonadditive synthesis approach is believed to contribute significantly toward large-scale design and structure control of biobased aerogels.
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Affiliation(s)
- Jonas Garemark
- Wallenberg
Wood Science Center, Department of Fiber and Polymer Technology, KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden
| | - Jesus E. Perea-Buceta
- Department
of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, 00560 Helsinki, Finland
| | - Daniel Rico del Cerro
- Department
of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, 00560 Helsinki, Finland
| | - Stephen Hall
- Lund
University, Division of Solid Mechanics, SE-221 00 Lund, Sweden
| | - Barbara Berke
- Department
of Physics, Chalmers University of Technology, 412 96 Gothenburg, Sweden
| | - Ilkka Kilpeläinen
- Department
of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, 00560 Helsinki, Finland
| | - Lars A. Berglund
- Wallenberg
Wood Science Center, Department of Fiber and Polymer Technology, KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden
| | - Yuanyuan Li
- Wallenberg
Wood Science Center, Department of Fiber and Polymer Technology, KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden
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Cruz CD, Wrigstedt P, Moslova K, Iashin V, Mäkkylä H, Ghemtio L, Heikkinen S, Tammela P, Perea-Buceta JE. Installation of an aryl boronic acid function into the external section of N-aryl-oxazolidinones: Synthesis and antimicrobial evaluation. Eur J Med Chem 2020; 211:113002. [PMID: 33223262 DOI: 10.1016/j.ejmech.2020.113002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 11/02/2020] [Accepted: 11/04/2020] [Indexed: 10/23/2022]
Abstract
N-aryl-oxazolidinones is a prominent family of antimicrobials used for treating infections caused by clinically prevalent Gram-positive bacteria. Recently, boron-containing compounds have displayed intriguing potential in the antibiotic discovery setting. Herein, we report the unprecedented introduction of a boron-containing moiety such as an aryl boronic acid in the external region of the oxazolidinone structure via a chemoselective acyl coupling reaction. As a result, we accessed a series of analogues with a distal aryl boronic pharmacophore on the oxazolidinone scaffold. We identified that a peripheric linear conformation coupled with freedom of rotation and no further substitution on the external aryl boronic ring, an amido linkage with hydrogen bonding character, in addition to a para-relative disposition between boronic group and linker, are the optimal combination of structural features in this series for antimicrobial activity. In comparison to linezolid, the analogue comprising all those features, compound 20b, displayed levels of antimicrobial activity augmented by an eight-fold to a thirty-two-fold against a panel of Gram-positive strains, and a near one hundred-fold against Escherichia coli JW5503, a Gram-negative mutant strain with a defective efflux capability.
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Affiliation(s)
- Cristina D Cruz
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, P.O. Box 56, 00014, Finland
| | - Pauli Wrigstedt
- Department of Chemistry, Faculty of Science, University of Helsinki, P.O. Box 55, 00014, Finland
| | - Karina Moslova
- Department of Chemistry, Faculty of Science, University of Helsinki, P.O. Box 55, 00014, Finland
| | - Vladimir Iashin
- Department of Chemistry, Faculty of Science, University of Helsinki, P.O. Box 55, 00014, Finland
| | - Heidi Mäkkylä
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, P.O. Box 56, 00014, Finland
| | - Léo Ghemtio
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, P.O. Box 56, 00014, Finland
| | - Sami Heikkinen
- Department of Chemistry, Faculty of Science, University of Helsinki, P.O. Box 55, 00014, Finland
| | - Päivi Tammela
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, P.O. Box 56, 00014, Finland
| | - Jesus E Perea-Buceta
- Department of Chemistry, Faculty of Science, University of Helsinki, P.O. Box 55, 00014, Finland.
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Rico del Cerro D, Mera-Adasme R, King AWT, Perea-Buceta JE, Heikkinen S, Hase T, Sundholm D, Wähälä K. On the Mechanism of the Reactivity of 1,3-Dialkylimidazolium Salts under Basic to Acidic Conditions: A Combined Kinetic and Computational Study. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Daniel Rico del Cerro
- Department of Chemistry; University of Helsinki; P.O. Box 55, A.I. Virtasen aukio 1 00014 Helsinki Finland
| | - Raúl Mera-Adasme
- Departamento de Ciencias del Ambiente; Facultad de Química y Biología; Universidad de Santiago de Chile; Av. Libertador Bernardo O'Higgins 3363 9170022 Estacion Central Chile
| | - Alistair W. T. King
- Department of Chemistry; University of Helsinki; P.O. Box 55, A.I. Virtasen aukio 1 00014 Helsinki Finland
| | - Jesus E. Perea-Buceta
- Department of Chemistry; University of Helsinki; P.O. Box 55, A.I. Virtasen aukio 1 00014 Helsinki Finland
| | - Sami Heikkinen
- Department of Chemistry; University of Helsinki; P.O. Box 55, A.I. Virtasen aukio 1 00014 Helsinki Finland
| | - Tapio Hase
- Department of Chemistry; University of Helsinki; P.O. Box 55, A.I. Virtasen aukio 1 00014 Helsinki Finland
| | - Dage Sundholm
- Department of Chemistry; University of Helsinki; P.O. Box 55, A.I. Virtasen aukio 1 00014 Helsinki Finland
| | - Kristiina Wähälä
- Department of Chemistry; University of Helsinki; P.O. Box 55, A.I. Virtasen aukio 1 00014 Helsinki Finland
- Department of Biochemistry and Development Biology; University of Helsinki; Haartmaninkatu 3, P.O. Box 21 000140 Helsinki Finland
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Niemi T, Perea-Buceta JE, Fernández I, Hiltunen OM, Salo V, Rautiainen S, Räisänen MT, Repo T. A One-Pot Synthesis of N
-Aryl-2-Oxazolidinones and Cyclic Urethanes by the Lewis Base Catalyzed Fixation of Carbon Dioxide into Anilines and Bromoalkanes. Chemistry 2016; 22:10355-9. [DOI: 10.1002/chem.201602338] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Indexed: 01/15/2023]
Affiliation(s)
- Teemu Niemi
- Department of Chemistry, P.O. Box 55, 00014; University of Helsinki; Finland
| | | | - Israel Fernández
- Departamento de Química Orgánica I; Facultad de Ciencias Químicas; Universidad Complutense de Madrid, Ciudad Universitaria; 28040 Madrid Spain
| | - Otto-Matti Hiltunen
- Department of Chemistry, P.O. Box 55, 00014; University of Helsinki; Finland
| | - Vili Salo
- Department of Chemistry, P.O. Box 55, 00014; University of Helsinki; Finland
| | - Sari Rautiainen
- Department of Chemistry, P.O. Box 55, 00014; University of Helsinki; Finland
| | - Minna T. Räisänen
- Department of Chemistry, P.O. Box 55, 00014; University of Helsinki; Finland
| | - Timo Repo
- Department of Chemistry, P.O. Box 55, 00014; University of Helsinki; Finland
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Perea-Buceta JE, Fernández I, Heikkinen S, Axenov K, King AWT, Niemi T, Nieger M, Leskelä M, Repo T. Diverting Hydrogenations with Wilkinson's Catalyst towards Highly Reactive Rhodium(I) Species. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506216] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Niemi T, Perea-Buceta JE, Fernández I, Alakurtti S, Rantala E, Repo T. Direct Assembly of 2-Oxazolidinones by Chemical Fixation of Carbon Dioxide. Chemistry 2014; 20:8867-71. [DOI: 10.1002/chem.201402368] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Indexed: 11/10/2022]
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Perea-Buceta JE, Wirtanen T, Laukkanen OV, Mäkelä MK, Nieger M, Melchionna M, Huittinen N, Lopez-Sanchez JA, Helaja J. Cycloisomerization of 2-Alkynylanilines to Indoles Catalyzed by Carbon-Supported Gold Nanoparticles and Subsequent Homocoupling to 3,3′-Biindoles. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201305579] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Perea-Buceta JE, Wirtanen T, Laukkanen OV, Mäkelä MK, Nieger M, Melchionna M, Huittinen N, Lopez-Sanchez JA, Helaja J. Cycloisomerization of 2-Alkynylanilines to Indoles Catalyzed by Carbon-Supported Gold Nanoparticles and Subsequent Homocoupling to 3,3′-Biindoles. Angew Chem Int Ed Engl 2013; 52:11835-9. [DOI: 10.1002/anie.201305579] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Revised: 08/22/2013] [Indexed: 11/05/2022]
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Muuronen M, Perea-Buceta JE, Nieger M, Patzschke M, Helaja J. Cationic Gold Catalysis with Pyridine-Tethered Au(III) NHC-Carbenes: An Experimental and DFT Computational Study. Organometallics 2012. [DOI: 10.1021/om3003027] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Mikko Muuronen
- Laboratory of Organic
Chemistry,
Department of Chemistry, University of Helsinki, A. I. Virtasen aukio 1, P.O. Box 55, Helsinki, Finland
| | - Jesus E. Perea-Buceta
- Laboratory of Organic
Chemistry,
Department of Chemistry, University of Helsinki, A. I. Virtasen aukio 1, P.O. Box 55, Helsinki, Finland
| | - Martin Nieger
- Laboratory of Inorganic Chemistry,
Department of Chemistry, University of Helsinki, A. I. Virtasen aukio 1, P.O. Box 55, Helsinki, Finland
| | - Michael Patzschke
- Laboratory for Instruction in
Swedish, Department of Chemistry, University of Helsinki, A. I. Virtasen aukio 1, P.O. Box 55, Helsinki, Finland
| | - Juho Helaja
- Laboratory of Organic
Chemistry,
Department of Chemistry, University of Helsinki, A. I. Virtasen aukio 1, P.O. Box 55, Helsinki, Finland
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Abstract
A six-step approach to the tetracyclic core of merrilactone A is described that uses an intramolecular Paterno-Büchi photoaddition to install the key oxetane ring. Irradiation of bicyclic enone 16, constructed through cyclopentenone alkylation followed by a domino oxy-/carbopalladation reaction, produces the tetracyclic oxetane 17 in excellent yield, having the core carbon skeleton of the target compound merrilactone A. [reaction: see text]
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Affiliation(s)
- Jone Iriondo-Alberdi
- University of Edinburgh, School of Chemistry, Joseph Black Building, King's Buildings, West Mains Road, Edinburgh EH9 3JJ, Scotland, UK
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