Excited-State Decay Pathways of Molecular Rotors: Twisted Intermediate or Conical Intersection?
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| Publication date | 03-11-2016 |
| Journal | The Journal of Physical Chemistry Letters |
| Volume | Issue number | 7 | 21 |
| Pages (from-to) | 4285-4290 |
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| Abstract | The fluorescence intensity of molecular rotors containing the dicyanomethylenedihydrofuran (DCDHF) motif increases strongly with solvent viscosity. Single-bond and double-bond rotations have been proposed as pathways of nonradiative decay for this and related molecular rotors. We show here that both are involved in the case of DCDHF rotors: Fluorescence is quenched by rotation around the dicyanomethylene double bond in nonpolar solvents, but in a sufficiently polar environment rotation about a formally single bond leads to a dark internal charge-transfer state. |
| Document type | Article |
| Note | With supplementary materials |
| Language | English |
| Published at | https://doi.org/10.1021/acs.jpclett.6b02277 |
| Downloads |
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