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https://doi.org/10.21256/zhaw-23479| Publication type: | Article in scientific journal |
| Type of review: | Peer review (publication) |
| Title: | Silica particles with fluorescein-labelled cores for evaluating accessibility through fluorescence quenching by copper |
| Authors: | Gallagher, Samuel H. Schlauri, Paul Cesari, Emanuele Durrer, Julian Brühwiler, Dominik |
| et. al: | No |
| DOI: | 10.1039/D1NA00599E 10.21256/zhaw-23479 |
| Published in: | Nanoscale Advances |
| Volume(Issue): | 3 |
| Issue: | 22 |
| Page(s): | 6459 |
| Pages to: | 6467 |
| Issue Date: | 2021 |
| Publisher / Ed. Institution: | Royal Society of Chemistry |
| ISSN: | 2516-0230 |
| Language: | English |
| Subject (DDC): | 540: Chemistry |
| Abstract: | Core–shell particles with fluorescent cores were synthesised by growing silica shells on fluorescein-labelled Stöber-type particles. The porosity of the shell could be altered in a subsequent pseudomorphic transformation step, without affecting the particle size and shape. These core–shell particles constitute a platform for the evaluation of pore connectivity and core accessibility by observing the effect of a quencher on the fluorescence signal emitted by the fluorescein-labelled cores. In combination with argon sorption measurements, quenching experiments with copper provided valuable information on the porosity generated during the shell formation process. It was further observed that the introduction of well-defined mesopores by pseudomorphic transformation in the presence of a structure-directing agent reduces the core accessibility. This led to the conclusion that the analysis by conventional gas sorption methods paints an incomplete picture of the mesoporous structure, in particular with regard to pores that do not offer an unobstructed path from the external particle surface to the core. |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/23479 |
| Fulltext version: | Published version |
| License (according to publishing contract): | CC BY-NC 3.0: Attribution - Non commercial 3.0 Unported |
| Departement: | Life Sciences and Facility Management |
| Organisational Unit: | Institute of Chemistry and Biotechnology (ICBT) |
| Published as part of the ZHAW project: | Multimodal Porous Particles |
| Appears in collections: | Publikationen Life Sciences und Facility Management |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| 2021_Gallagher-etal_Silica-particles-fluorescence-quenching-copper.pdf | 855.41 kB | Adobe PDF |  View/Open |
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Gallagher, S. H., Schlauri, P., Cesari, E., Durrer, J., & Brühwiler, D. (2021). Silica particles with fluorescein-labelled cores for evaluating accessibility through fluorescence quenching by copper. Nanoscale Advances, 3(22), 6459–6467. https://doi.org/10.1039/D1NA00599E
Gallagher, S.H. et al. (2021) ‘Silica particles with fluorescein-labelled cores for evaluating accessibility through fluorescence quenching by copper’, Nanoscale Advances, 3(22), pp. 6459–6467. Available at: https://doi.org/10.1039/D1NA00599E.
S. H. Gallagher, P. Schlauri, E. Cesari, J. Durrer, and D. Brühwiler, “Silica particles with fluorescein-labelled cores for evaluating accessibility through fluorescence quenching by copper,” Nanoscale Advances, vol. 3, no. 22, pp. 6459–6467, 2021, doi: 10.1039/D1NA00599E.
GALLAGHER, Samuel H., Paul SCHLAURI, Emanuele CESARI, Julian DURRER und Dominik BRÜHWILER, 2021. Silica particles with fluorescein-labelled cores for evaluating accessibility through fluorescence quenching by copper. Nanoscale Advances. 2021. Bd. 3, Nr. 22, S. 6459–6467. DOI 10.1039/D1NA00599E
Gallagher, Samuel H., Paul Schlauri, Emanuele Cesari, Julian Durrer, and Dominik Brühwiler. 2021. “Silica Particles with Fluorescein-Labelled Cores for Evaluating Accessibility through Fluorescence Quenching by Copper.” Nanoscale Advances 3 (22): 6459–67. https://doi.org/10.1039/D1NA00599E.
Gallagher, Samuel H., et al. “Silica Particles with Fluorescein-Labelled Cores for Evaluating Accessibility through Fluorescence Quenching by Copper.” Nanoscale Advances, vol. 3, no. 22, 2021, pp. 6459–67, https://doi.org/10.1039/D1NA00599E.
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