Restriction of molecular twisting on a gold nanoparticle surface

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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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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