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Layer-by-Layer Assembly of High-Performance Electroactive Composites Using a Multiple Charged Small Molecule
KTH Royal Inst Technol, Sweden.
KTH Royal Inst Technol, Sweden.
KTH Royal Inst Technol, Sweden.
KTH Royal Inst Technol, Sweden.
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2019 (English)In: Langmuir, ISSN 0743-7463, E-ISSN 1520-5827, Vol. 35, no 32, p. 10367-10373Article in journal (Refereed) Published
Abstract [en]

Layer-by-layer (LbL) assembly is a versatile tool for fabricating multilayers with tailorable nanostructures. LbL, however, generally relies on polyelectrolytes, which are mostly insulating and induce large interlayer distances. We demonstrate a method in which we replace polyelectrolytes with the smallest unit capable of LbL self-assembly: a molecule with multiple positive charges, tris(3-aminopropyl)amine (TAPA), to fabricate LbL films with negatively charged single-walled carbon nanotubes (CNTs). TAPA introduces less defects during the LbL build-up and results in more efficient assembly of films with denser micromorphology. Twenty bilayers of TAPA/CNT showed a low sheet resistance of 11 k Omega, a high transparency of 91% at 500 nm, and a high electronic conductivity of 1100 S/m on planar substrates. We also fabricated LbL films on porous foams with a conductivity of 69 mS/m and used them as electrodes for supercapacitors with a high specific capacitance of 43 F/g at a discharging current density of 1 A/g.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2019. Vol. 35, no 32, p. 10367-10373
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-160045DOI: 10.1021/acs.langmuir.9b01587ISI: 000480827000013PubMedID: 31322359Scopus ID: 2-s2.0-85071226711OAI: oai:DiVA.org:liu-160045DiVA, id: diva2:1349053
Note

Funding Agencies|European Research Council [715268]; Wenner-Gren Foundation; Knut and Alice Wallenberg Foundation (through Wallenberg Wood Science Centre at KTH); Swedish Government Strategic Research Area in Materials Science on Advanced Functional Materials at Linkoping University [2009-00971]

Available from: 2019-09-06 Created: 2019-09-06 Last updated: 2019-09-11Bibliographically approved

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CiteExportLink to record
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