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Engel LF, González-García L, Kraus T. Flexible and transparent electrodes imprinted from Au nanowires: stability and ageing. NANOSCALE ADVANCES 2022; 4:3940-3949. [PMID: 36133343 PMCID: PMC9470066 DOI: 10.1039/d2na00352j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 07/26/2022] [Indexed: 06/16/2023]
Abstract
We study the stability of flexible transparent electrodes (FTEs) that were self-assembled from ultra-thin gold nanowires (AuNW) by direct nanoimprinting of inks with different particle concentrations (1 to 10 mg mL-1). The resulting lines were less than 3 μm wide and contained bundles of AuNW with oleylamine (OAm) ligand shells. Small-angle X-ray scattering confirmed a concentration-independent bundle structure. Plasma sintering converted the wire assemblies into lines with a thin metal shell that contributes most to electrical conductivity and covers a hybrid core. We studied the relative change in sheet resistance and the morphology of the FTEs with time. The sheet resistance increased at all concentrations, but at different rates. The metal shell aged by de-wetting and pore formation. The hybrid core de-mixed and densified, which led to a partial collapse of the shell. Residual organics migrated through the shell via its pores. Lines formed at low concentration (c Au = 2 to 3 mg mL-1) contained less residual organics and aged slower than those formed at high c Au ≥ 5 mg mL-1. We passivated the conductive shell with thin, adsorbed layers of PEDOT:PSS and found that it decelerated degradation by slowing surface diffusion and hindering further rupture of the shell. Thick capping layers prevented degradation entirely and stopped pore formation.
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Affiliation(s)
- Lukas F Engel
- INM - Leibniz Institute for New Materials Campus D2 2 66123 Saarbrücken Germany +49 (0)681-9300-269, +49 (0)681-9300-389
| | - Lola González-García
- INM - Leibniz Institute for New Materials Campus D2 2 66123 Saarbrücken Germany +49 (0)681-9300-269, +49 (0)681-9300-389
| | - Tobias Kraus
- INM - Leibniz Institute for New Materials Campus D2 2 66123 Saarbrücken Germany +49 (0)681-9300-269, +49 (0)681-9300-389
- Colloid and Interface Chemistry, Saarland University Campus D2 2 66123 Saarbrücken Germany
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Rogolino A, Claes N, Cizaurre J, Marauri A, Jumbo-Nogales A, Lawera Z, Kruse J, Sanromán-Iglesias M, Zarketa I, Calvo U, Jimenez-Izal E, Rakovich YP, Bals S, Matxain JM, Grzelczak M. Metal-Polymer Heterojunction in Colloidal-Phase Plasmonic Catalysis. J Phys Chem Lett 2022; 13:2264-2272. [PMID: 35239345 PMCID: PMC8935371 DOI: 10.1021/acs.jpclett.1c04242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 03/01/2022] [Indexed: 06/14/2023]
Abstract
Plasmonic catalysis in the colloidal phase requires robust surface ligands that prevent particles from aggregation in adverse chemical environments and allow carrier flow from reagents to nanoparticles. This work describes the use of a water-soluble conjugated polymer comprising a thiophene moiety as a surface ligand for gold nanoparticles to create a hybrid system that, under the action of visible light, drives the conversion of the biorelevant NAD+ to its highly energetic reduced form NADH. A combination of advanced microscopy techniques and numerical simulations revealed that the robust metal-polymer heterojunction, rich in sulfonate functional groups, directs the interaction of electron-donor molecules with the plasmonic photocatalyst. The tight binding of polymer to the gold surface precludes the need for conventional transition-metal surface cocatalysts, which were previously shown to be essential for photocatalytic NAD+ reduction but are known to hinder the optical properties of plasmonic nanocrystals. Moreover, computational studies indicated that the coating polymer fosters a closer interaction between the sacrificial electron-donor triethanolamine and the nanoparticles, thus enhancing the reactivity.
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Affiliation(s)
- Andrea Rogolino
- Galilean
School of Higher Education, University of
Padova, 35122 Padova, Italy
| | - Nathalie Claes
- EMAT-University
of Antwerp, Groenenborgerlaan
171, B-2020 Antwerp, Belgium
| | - Judit Cizaurre
- Kimika
Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU) Lardizabal Pasealekua 3, 20018 Donostia-San Sebastián, Spain
| | - Aimar Marauri
- Kimika
Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU) Lardizabal Pasealekua 3, 20018 Donostia-San Sebastián, Spain
| | - Alba Jumbo-Nogales
- Centro
de Física de Materiales (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 Donostia-Sebastián, Spain
| | - Zuzanna Lawera
- Centro
de Física de Materiales (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 Donostia-Sebastián, Spain
| | - Joscha Kruse
- Centro
de Física de Materiales (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 Donostia-Sebastián, Spain
- Donostia
International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-Sebastián, Spain
| | - María Sanromán-Iglesias
- Centro
de Física de Materiales (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 Donostia-Sebastián, Spain
| | - Ibai Zarketa
- Kimika
Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU) Lardizabal Pasealekua 3, 20018 Donostia-San Sebastián, Spain
| | - Unai Calvo
- Kimika
Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU) Lardizabal Pasealekua 3, 20018 Donostia-San Sebastián, Spain
| | - Elisa Jimenez-Izal
- Kimika
Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU) Lardizabal Pasealekua 3, 20018 Donostia-San Sebastián, Spain
- Donostia
International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-Sebastián, Spain
- Ikerbasque,
Basque Foundation for Science, Bilbao 48009, Spain
| | - Yury P. Rakovich
- Centro
de Física de Materiales (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 Donostia-Sebastián, Spain
- Donostia
International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-Sebastián, Spain
- Ikerbasque,
Basque Foundation for Science, Bilbao 48009, Spain
| | - Sara Bals
- EMAT-University
of Antwerp, Groenenborgerlaan
171, B-2020 Antwerp, Belgium
| | - Jon M. Matxain
- Kimika
Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU) Lardizabal Pasealekua 3, 20018 Donostia-San Sebastián, Spain
- Donostia
International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-Sebastián, Spain
| | - Marek Grzelczak
- Centro
de Física de Materiales (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 Donostia-Sebastián, Spain
- Donostia
International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-Sebastián, Spain
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Escudero A, González-García L, Strahl R, Kang DJ, Drzic J, Kraus T. Large-Scale Synthesis of Hybrid Conductive Polymer-Gold Nanoparticles Using "Sacrificial" Weakly Binding Ligands for Printing Electronics. Inorg Chem 2021; 60:17103-17113. [PMID: 34735769 DOI: 10.1021/acs.inorgchem.1c02350] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We describe the gram-scale synthesis of hybrid gold nanoparticles with a shell of conductive polymers. A large-scale synthesis of hexadecyltrimethylammonium bromide (CTAB)-capped gold nanoparticles (AuNP@CTAB) was followed by ligand exchange with conductive polymers based on thiophene in a 10 L reactor equipped with a jacket to ensure a constant temperature of 40 °C and a mechanical stirrer. Slow and controlled reduction of the gold precursors and the presence of small amounts of silver nitrate are revealed to be the critical synthesis variables to obtain particles with a sufficiently narrow size distribution. Batches of approximately 10 g of faceted AuNP@CTAB with tunable average particle sizes from 54 to 85 nm were obtained per batch. Ligand exchange with poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) in the same reactor then yielded hybrid Au@PEDOT:PSS nanoparticles. They were used to formulate sinter-free inks for the inkjet printing of conductive structures without the need for a sintering step.
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Affiliation(s)
- Alberto Escudero
- INM─Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany.,Departamento de Química Inorgánica and Instituto de Investigaciones Químicas (IIQ), Universidad de Sevilla─CSIC, Calle Américo Vespucio 49, 41092 Seville, Spain
| | - Lola González-García
- INM─Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany
| | - Robert Strahl
- INM─Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany
| | - Dong Jin Kang
- INM─Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany
| | - Juraj Drzic
- INM─Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany
| | - Tobias Kraus
- INM─Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany.,Colloid and Interface Chemistry, Saarland University, 66123 Saarbrücken, Germany
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