4.6 Article

Intramolecular charge transfer and dual fluorescence of 4-(dimethylamino) benzonitrile: ultrafast branching followed by a two-fold decay mechanism

Journal

PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 13, Issue 33, Pages 15182-15188

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c1cp21089k

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Funding

  1. Consolider-Ingenio in Molecular Nanoscience of the Spanish MICINN/FEDER [CTQ2010-14892, CSD2007-0010]
  2. EC [FP7/2007-2013, 228334, 212025]
  3. French Programme Triangle de la Physique

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In this contribution we present new experimental and theoretical results for the intramolecular charge transfer (ICT) reaction underlying the dual fluorescence of 4-(dimethylamino) benzonitrile ( DMABN), which indicate that the fully twisted ICT (TICT) state is responsible for the time-resolved transient absorption spectrum while a distinct partially twisted ICT (pTICT) structure is suggested for the fluorescent ICT state.

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