Restriction of Molecular Twisting on a Gold Nanoparticle Surface | Zendy

Debnath Tushar | Zendy; Dana Jayanta | Zendy; Maity Partha | Zendy; Lobo Hyacintha | Zendy; Shankarling Ganapati S. | Zendy; Ghosh Hirendra N. | Zendy

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Restriction of Molecular Twisting on a Gold Nanoparticle Surface

Author(s) -

Debnath Tushar,

Dana Jayanta,

Maity Partha,

Lobo Hyacintha,

Shankarling Ganapati S.,

Ghosh Hirendra N.

Publication year - 2015

Publication title -

chemistry – a european journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.687

H-Index - 242

eISSN - 1521-3765

pISSN - 0947-6539

DOI - 10.1002/chem.201500044

Subject(s) - intramolecular force , excited state , molecule , nanoparticle , charge (physics) , photochemistry , chemical physics , chemistry , materials science , nanotechnology , atomic physics , stereochemistry , physics , organic chemistry , quantum mechanics

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.

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