Non-covalent coatings on carbon nanotubes mediate photosensitizer interactions Journal Article
| Authors: | Horoszko, C. P.; Schnatz, P. J.; Budhathoki-Uprety, J.; Rao-Pothuraju, R. V.; Koder, R. L.; Heller, D. A. |
| Article Title: | Non-covalent coatings on carbon nanotubes mediate photosensitizer interactions |
| Abstract: | Carbon nanotube-based donor-acceptor devices are used in applications ranging from photovoltaics and sensors to environmental remediation. Non-covalent contacts between donor dyes and nanotubes are often used to optimize sensitization and scalability. However, inconsistency is often observed despite donor dye studies reporting strong donor-acceptor interactions. Here, we demonstrate that the dye binding location is an important factor in this process: we used coated-acceptor chromatic responses and find that dye binding is affected by the coating layer. The emission response to free- and protein-sequestered porphyrin was tested to compare direct and indirect dye contact. An acceptor complex that preferentially red-shifts in response to sequestered porphyrin was identified. We observe inconsistent optical signals that suggest porphyrin-dye interactions are best described as coating-centric; therefore, the coating interface must be considered in application and assay design. © 2021 American Chemical Society. |
| Keywords: | substrate; binding; dyes; carbon nanotubes; hybrid; environmental remediation; interface; porphyrins; coatings; photosensitizers; donor - acceptor; metrology; red shift; donor/acceptor; dye bindings; non-covalent contacts; noncovalent; photosensitiser; photovoltaics; sensitisation |
| Journal Title: | ACS Applied Materials & Interfaces |
| Volume: | 13 |
| Issue: | 43 |
| ISSN: | 1944-8244 |
| Publisher: | American Chemical Society |
| Date Published: | 2021-11-03 |
| Start Page: | 51343 |
| End Page: | 51350 |
| Language: | English |
| DOI: | 10.1021/acsami.1c14266 |
| PROVIDER: | scopus |
| PUBMED: | 34672190 |
| PMCID: | PMC9256527 |
| DOI/URL: | |
| Notes: | Article -- Export Date: 1 December 2021 -- Source: Scopus |
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