Interfacial electron transfer of perylenes: Influence of the anchor binding mode
| Author(s) | Yan, Han | |
| Author(s) | Harmer, Ryan | |
| Author(s) | Zafar, Binish | |
| Author(s) | Galoppini, Elena | |
| Author(s) | Gundlach, Lars | |
| Date Accessioned | 2024-05-01T18:14:10Z | |
| Date Available | 2024-05-01T18:14:10Z | |
| Publication Date | 2024-01-21 | |
| Description | This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Han Yan, Ryan Harmer, Binish Zafar, Elena Galoppini, Lars Gundlach; Interfacial electron transfer of perylenes: Influence of the anchor binding mode. J. Chem. Phys. 21 January 2024; 160 (3): 034706. https://doi.org/10.1063/5.0185342 and may be found at https://doi.org/10.1063/5.0185342. © 2024 Author(s). Published under an exclusive license by AIP Publishing. This article will be embargoed until 01/21/2025. | |
| Abstract | Interfacial electron transfer (IET) through saturated single-linker and dual-linker groups from a perylene chromophore into nanostructured TiO2 films was studied by ultrafast spectroscopy. Perylene chromophores with one and two propanoic acid linker groups in the peri and ortho positions were investigated. In comparison to previously studied perylenes bound via unsaturated acrylic acid linkers, the chromophores with saturated linkers showed bi-exponential IET dynamics. Two distinct transfer times were observed that indicate the presence of two concurrent binding modes. A comparison between ortho- and peri-substituted sensitizers resulted in slower IET dynamics and weaker electronic coupling for ortho substitution. Finally, IET from sensitizers with saturated linker groups is neither promoted nor hindered by a second linker group. This indicates that only one of the two linkers binds covalently to the surface. This study reveals the importance of the anchor-binding mode and design considerations of the linker for regulating IET. | |
| Sponsor | The authors acknowledge the financial support from the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Office of Solar Energy Research, under Awards No. DE-FG02-01ER15256 (E. Galoppini) and DESC0016288 (L. Gundlach). Spectral characterization of the compounds carried out at Rutgers Newark was collected on instrumentation funded by the National Science Foundation (Award No. MRI-1726345). | |
| Citation | Han Yan, Ryan Harmer, Binish Zafar, Elena Galoppini, Lars Gundlach; Interfacial electron transfer of perylenes: Influence of the anchor binding mode. J. Chem. Phys. 21 January 2024; 160 (3): 034706. https://doi.org/10.1063/5.0185342 | |
| ISSN | 1089-7690 | |
| URL | https://udspace.udel.edu/handle/19716/34331 | |
| Language | en_US | |
| Publisher | The Journal of Chemical Physics | |
| Title | Interfacial electron transfer of perylenes: Influence of the anchor binding mode | |
| Type | Article |
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