ArticleChemphyschem : a European journal of chemical physics and physical chemistry2021
Photophysics of Fluorescent Contact Sensors Based on the Dicyanodihydrofuran Motif.
Article in Chemphyschem : a European journal of chemical physics and physical chemistry, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Excited-State Relaxation Pathways of 4-Aminobiphenyl-2-Pyrimidine Derivatives: An Ultrafast Perspective.The journal of physical chemistry. A · 2025Article
- Molecular Probing of the Microscopic Pressure at Contact Interfaces.Journal of the American Chemical Society · 2024Article
- Resolving Multi-Asperity Contacts at the Nanoscale through Super-Resolution Fluorescence Imaging.The journal of physical chemistry letters · 2024Article
- Photophysics of Fluorescent Contact Sensors Based on the Dicyanodihydrofuran Motif.Chemphyschem : a European journal of chemical physics and physical chemistry · 2021Article
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Authors and funding
4 authors.
Funding
Abstract
Fluorescent molecular rotors have been used for measurements of local mobility on molecular length scales, for example to determine viscosity, and for the visualization of contact between two surfaces. In the present work, we deepen our insight into the excited-state deactivation kinetics and mechanics of dicyanodihydrofuran-based molecular rotors. We extend the scope of the use of this class of rotors for contact sensing with a red-shifted member of the family. This allows for contact detection with a range of excitation wavelengths up to ∼600 nm. Steady-state fluorescence shows that the fluorescence quantum yield of these rotors depends not only on the rigidity of their environment, but - under certain conditions - also on its polarity. While excited state decay via rotation about the exocyclic double bond is rapid in nonpolar solvents and twisting of a single bond allows for fast decay in polar solvents, the barriers for both processes are significant in solvents of intermediate polarity. This effect may also occur in other molecular rotors, and it should be considered when applying such molecules as local mobility probes.
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