Zhang, S;
Cheng, Y-H;
Galuska, L;
Roy, A;
Lorenz, M;
Chen, B;
Luo, S;
... Gu, X; + view all
(2020)
Tacky Elastomers to Enable Tear-Resistant and Autonomous Self-Healing Semiconductor Composites.
Advanced Functional Materials
, 30
(27)
, Article 2000663. 10.1002/adfm.202000663.
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Abstract
Mechanical failure of π‐conjugated polymer thin films is unavoidable under cyclic loading conditions, due to intrinsic defects and poor resistance to crack propagation. Here, the first tear‐resistant and room‐temperature self‐healable semiconducting composite is presented, consisting of conjugated polymers and butyl rubber elastomers. This new composite displays both a record‐low elastic modulus (<1 MPa) and ultrahigh deformability with fracture strain above 800%. More importantly, failure behavior is not sensitive to precut notches under deformation. Autonomous self‐healing at room temperature, both mechanical and electronic, is demonstrated through the physical contact of two separate films. The composite film also shows device stability in the ambient environment over 5 months due to much‐improved barrier property to both oxygen and water. Butyl rubber is broadly applicable to various p‐type and n‐type semiconducting polymers for fabricating self‐healable electronics to provide new resilient electronics that mimic the tear resistance and healable property of human skin.
| Type: | Article |
|---|---|
| Title: | Tacky Elastomers to Enable Tear-Resistant and Autonomous Self-Healing Semiconductor Composites |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1002/adfm.202000663 |
| Publisher version: | https://doi.org/10.1002/adfm.202000663 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Technology, Chemistry, Multidisciplinary, Chemistry, Physical, Nanoscience & Nanotechnology, Materials Science, Multidisciplinary, Physics, Applied, Physics, Condensed Matter, Chemistry, Science & Technology - Other Topics, Materials Science, Physics, air-stable devices, autonomous self-healing, crack resistance, semiconducting polymers, ORGANIC SEMICONDUCTORS, MECHANICAL-PROPERTIES, CHARGE-TRANSPORT, POLYMER, CRYSTALLIZATION, DUCTILITY, DISORDER |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10098461 |
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