Synthesis, Characterization and Solvatochromic Studies Using the Solvent Polarity Parameter, ENT on 2-Chloro-3-Ethylamino-1,4-Naphthoquinone

Arulappan Durairaj, Asir Obadiah, Subramanian Ramanathan, Princy Merlin Johnson, Antony Paulraj Bella, Samuel Vasanthkumar

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Quinones are molecules with varied biological activities and electronic properties which are used for important applications [1, 2]. Quinone with a heteroatom substituted, namely 2-chloro-3-ethylamino-1,4-naphthoquinone (N-CAN) was synthesized and characterized by various techniques such as H1-NMR, C13-NMR, Mass spectroscopy and FT-IR spectroscopy. In this study, the solvatochromic effects on the spectral properties of 2-chloro-3-ethylamino-1,4-naphthoquinone have been investigated in different solvents taking into consideration, the solvent parameters like dielectric constant (ε) and refractive index (η) of different solvent polarities. Using Lippert-Mataga, Bakshiev’s, Kawski-Chamma-Viallet and Reichardt equations, the ground state (μg) and excited state (μe) dipole moments were calculated. The angle between the excited state and ground state dipole moments were also calculated. [Figure not available: see fulltext.].

Original languageEnglish
Pages (from-to)1505-1512
Number of pages8
JournalJournal of Fluorescence
Issue number4
StatePublished - 1 Jul 2017
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2017, Springer Science+Business Media New York.


  • 2-chloro-3-ethylamino-1,4-naphthoquinone
  • Dipole moments
  • Kawski-Chamma-Viallet, Reichardt equations
  • Lippert-Mataga, Bakshiev’s


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