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Rylski AK, Cater HL, Mason KS, Allen MJ, Arrowood AJ, Freeman BD, Sanoja GE, Page ZA. Polymeric multimaterials by photochemical patterning of crystallinity. Science 2022; 378:211-215. [PMID: 36227995 DOI: 10.1126/science.add6975] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
An organized combination of stiff and elastic domains within a single material can synergistically tailor bulk mechanical properties. However, synthetic methods to achieve such sophisticated architectures remain elusive. We report a rapid, facile, and environmentally benign method to pattern strong and stiff semicrystalline phases within soft and elastic matrices using stereo-controlled ring-opening metathesis polymerization of an industrial monomer, cis-cyclooctene. Dual polymerization catalysis dictates polyolefin backbone chemistry, which enables patterning of compositionally uniform materials with seamless stiff and elastic interfaces. Visible light-induced activation of a metathesis catalyst results in the formation of semicrystalline trans polyoctenamer rubber, outcompeting the formation of cis polyoctenamer rubber, which occurs at room temperature. This bottom-up approach provides a method for manufacturing polymeric materials with promising applications in soft optoelectronics and robotics.
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Affiliation(s)
- Adrian K Rylski
- Department of Chemistry, The University of Texas at Austin, Austin, TX 78712, USA
| | - Henry L Cater
- Department of Chemistry, The University of Texas at Austin, Austin, TX 78712, USA
| | - Keldy S Mason
- Department of Chemistry, The University of Texas at Austin, Austin, TX 78712, USA
| | - Marshall J Allen
- Department of Chemistry, The University of Texas at Austin, Austin, TX 78712, USA.,McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Anthony J Arrowood
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Benny D Freeman
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Gabriel E Sanoja
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Zachariah A Page
- Department of Chemistry, The University of Texas at Austin, Austin, TX 78712, USA
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Mechanistic insights into liquid-phase autoxidation of cyclohexene in acetonitrile. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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