Excitonic coupling of RNA-templated merocyanine dimer studied by higher-order transient absorption spectroscopy
Please always quote using this URN: urn:nbn:de:bvb:20-opus-327772
- We report the synthesis and spectroscopic analysis of RNA containing the barbituric acid merocyanine rBAM2 as a nucleobase surrogate. Incorporation into RNA strands by solid-phase synthesis leads to fluorescence enhancement compared to the free chromophore. In addition, linear absorption studies show the formation of an excitonically coupled H-type dimer in the hybridized duplex. Ultrafast third- and fifth-order transient absorption spectroscopy of this non-fluorescent dimer suggests immediate (sub-200 fs) exciton transfer and annihilation dueWe report the synthesis and spectroscopic analysis of RNA containing the barbituric acid merocyanine rBAM2 as a nucleobase surrogate. Incorporation into RNA strands by solid-phase synthesis leads to fluorescence enhancement compared to the free chromophore. In addition, linear absorption studies show the formation of an excitonically coupled H-type dimer in the hybridized duplex. Ultrafast third- and fifth-order transient absorption spectroscopy of this non-fluorescent dimer suggests immediate (sub-200 fs) exciton transfer and annihilation due to the proximity of the rBAM2 units.…
Author: | Julia Dietzsch, Ajay Jayachandran, Stefan Mueller, Claudia HöbartnerORCiD, Tobias BrixnerORCiD |
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URN: | urn:nbn:de:bvb:20-opus-327772 |
Document Type: | Preprint |
Faculties: | Fakultät für Chemie und Pharmazie / Institut für Organische Chemie |
Fakultät für Chemie und Pharmazie / Institut für Physikalische und Theoretische Chemie | |
Language: | English |
Parent Title (English): | Chemical Communications |
Year of Completion: | 2023 |
Edition: | submitted version |
Source: | Chemical Communications (2023) 59:7395-7398. https://doi.org/10.1039/D3CC02024J |
DOI: | https://doi.org/10.1039/D3CC02024J |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften |
Tag: | Barbituric Acid Merocyanines; Higher-order Transient Absorption Spectroscopy; Nucleobase Surrogate Incorporation; rBAM2-labeled RNA strands |
Release Date: | 2023/10/09 |
Licence (German): | Deutsches Urheberrecht |