Highly Conductive Paper/Textile Electrodes Using Ligand Exchange Reaction-Induced in Situ Metallic Fusion
- Authors
- Kang, Sungkun; Nam, Donghyeon; Choi, Jimin; Ko, Jongkuk; Kim, Donghee; Kwon, Cheong Hoon; Huh, June; Cho, Jinhan
- Issue Date
- 27-3월-2019
- Publisher
- AMER CHEMICAL SOC
- Keywords
- metal nanoparticle; metallic textile; DETA ligand; metallic fusion; ligand exchange reaction; density functional theory
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v.11, no.12, pp.12032 - 12042
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS APPLIED MATERIALS & INTERFACES
- Volume
- 11
- Number
- 12
- Start Page
- 12032
- End Page
- 12042
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/66601
- DOI
- 10.1021/acsami.8b21445
- ISSN
- 1944-8244
- Abstract
- Here, we report that metal nanoparticle (NP)-based paper/textile electrodes with bulk metallic conductivity can be prepared via organic linker-modulated ligand exchange reaction and in situ room-temperature metallic fusion without additional chemical or thermal treatments. For this study, amine-functionalized molecule linkers instead of bulky polymer linkers were layer-by-layer (LbL)-assembled with tetraoctylammonium bromide (TOABr)-stabilized Au NPs to form Au NP multilayered films. By conversion of the amine groups of the organic molecule linkers from -NH3+ to the -NH2 groups, as well as by a decrease in the size of the organic linkers, the LbL-assembled Au NPs became highly interconnected and fused during LbL deposition, resulting in Au NP multilayers with adjustable conductivity and transport behavior. These phenomena were also predicted by a density functional theory investigation for the model system. Particularly, LbL-assembled films composed of TOABr-Au NPs and diethylenetriamine (M-w: similar to 104) exhibited a remarkable electrical conductivity of 2.2 x 10(5) S.cm(-1), which was higher than the electrical conductivity of the metal NP-based electrodes as well as the carbon material-based electrodes reported to date. Furthermore, based on our approach, a variety of insulating flexible papers and textiles were successfully converted into real metal-like paper and textile electrodes with high flexibility preserving their highly porous structure. This approach can provide a basis for further improving and controlling the electrical properties of flexible electrodes through the control of organic linkers.
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