Debnath, Tushar ; Dana, Jayanta ; Maity, Partha ; Lobo, Hyacintha ; Shankarling, Ganapati S. ; Ghosh, Hirendra N. (2015) Restriction of molecular twisting on a gold nanoparticle surface Chemistry - A European Journal, 21 (15). pp. 5704-5708. ISSN 0947-6539
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/chem.20...
Related URL: http://dx.doi.org/10.1002/chem.201500044
Abstract
To understand the photophysical properties of intramolecular charge transfer (ICT) and twisted intramolecular charge transfer (TICT) states on a gold nanoparticle (Au NP) surface, we have designed and synthesized a new coumarin molecule (C3) that exists both as ICT and TICT states in its excited state in a polar environment. On a Au NP surface, an excited C3 molecule only exists as an ICT state owing to restricted molecular rotation of a diethylamino group; as a result, no conversion from the ICT to TICT state was observed. Selection of the preferential state of a molecule with dual emitting states can be helpful for selected biological applications.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Wiley. |
| Keywords: | Coumarin Dye; Dual Emission; Gold Nanoparticles; ICT and TICT States; Molecular Rotation |
| ID Code: | 102163 |
| Deposited On: | 25 Jan 2017 04:28 |
| Last Modified: | 25 Jan 2017 04:28 |
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