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Simultaneous Nanolocal Polymer and In Situ Readout Unit Placement in Mesoporous Separation Layers

Stanzel, Mathias ; Zhao, Lucy ; Mohammadi, Reza ; Pardehkhorram, Raheleh ; Kunz, Ulrike ; Vogel, Nicolas ; Andrieu-Brunsen, Annette (2021):
Simultaneous Nanolocal Polymer and In Situ Readout Unit Placement in Mesoporous Separation Layers. (Publisher's Version)
In: Analytical Chemistry, 93 (13), pp. 5394-5402. ACS Publications, ISSN 0003-2700, e-ISSN 1520-6882,
DOI: 10.26083/tuprints-00019734,
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Item Type: Article
Origin: Secondary publication service
Status: Publisher's Version
Title: Simultaneous Nanolocal Polymer and In Situ Readout Unit Placement in Mesoporous Separation Layers
Language: English
Abstract:

Bioinspired solid-state nanopores and nanochannels have attracted interest in the last two decades, as they are envisioned to advance future sensing, energy conversion, and separation concepts. Although much effort has been made regarding functionalization of these materials, multifunctionality and accurate positioning of functionalities with nanoscale precision still remain challenging. However, this precision is necessary to meet transport performance and complexity of natural pores in living systems, which are often based on nonequilibrium states and compartmentalization. In this work, a nanolocal functionalization and simultaneous localized sensing strategy inside a filtering mesoporous film using precisely placed plasmonic metal nanoparticles inside mesoporous films with pore accessibility control is demonstrated. A single layer of gold nanoparticles is incorporated into mesoporous thin films with precise spatial control along the nanoscale layer thickness. The local surface plasmon resonance is applied to induce a photopolymerization leading to a nanoscopic polymer shell around the particles and thus nanolocal polymer placement inside the mesoporous material. As near-field modes are sensitive to the dielectric properties of their surrounding, the in situ sensing capability is demonstrated using UV–vis spectroscopy. It is demonstrated that the sensing sensitivity only slightly decreases upon functionalization. The presented nanolocal placement of responsive functional polymers into nanopores offers a simultaneous filtering and nanoscopic readout function. Such a nanoscale local control is envisioned to have a strong impact onto the development of new transport and sensor concepts, especially as the system can be developed into higher complexity using different metal nanoparticles and additional design of mesoporous film filtering properties.

Journal or Publication Title: Analytical Chemistry
Journal volume: 93
Number: 13
Publisher: ACS Publications
Classification DDC: 500 Naturwissenschaften und Mathematik > 540 Chemie
Divisions: 07 Department of Chemistry > Fachgebiet Makromolekulare Chemie
Date Deposited: 13 Oct 2021 14:11
Last Modified: 13 Oct 2021 14:11
DOI: 10.26083/tuprints-00019734
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-197348
Additional Information:

Supplement: https://ndownloader.figstatic.com/files/26842337

URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/19734
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