Charge Shift/Recombination and Triplet Formation in a Molecular Dyad based on a Borondipyrromethene (Bodipy) and an Expanded Acridinium Cation
| Autor: | Helge Lemmetyinen, Nikolai V. Tkachenko, Andrew C. Benniston, Xiaoyan He |
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| Rok vydání: | 2018 |
| Předmět: |
010405 organic chemistry
Charge separation Chemistry Organic Chemistry Charge (physics) 010402 general chemistry Photochemistry 01 natural sciences 0104 chemical sciences Analytical Chemistry chemistry.chemical_compound Ultrashort laser Excited state Physical and Theoretical Chemistry BODIPY Ground state Recombination |
| Zdroj: | ChemPhotoChem. 2:277-282 |
| ISSN: | 2367-0932 |
| DOI: | 10.1002/cptc.201700184 |
| Popis: | A molecular monocationic dyad comprising a borondipyrromethene (Bodipy) and an expanded planar acridinium cation was prepared. The dyad, when excited in solution by an ultrashort laser pulse, generates a charge-shift state, where a positive charge is transferred to the Bodipy from the acridinium subunit. The process takes less than 1 ps in MeCN and around 8 ps in 1,2-dichloroethane. The charge-shift state collapses, in part, back to the ground state but it also leads to partial triplet formation; the discrimination between rates for the forward and reverse processes is circa 7. |
| Databáze: | OpenAIRE |
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