☆ 4.7 Article

Optical properties of donor-π-(acceptor)n merocyanine dyes with dicyanovinylindane as acceptor group and triphenylamine as donor unit

DYES AND PIGMENTS (2009)

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Journal

DYES AND PIGMENTS
Volume 82, Issue 3, Pages 293-298

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2008.12.014

Keywords

Donor-pi-(acceptor); Merocyanine dye; Synthesis; Optical property; Chromophore; Computational simulated

Categories

Chemistry, Applied Engineering, Chemical Materials Science, Textiles

Funding

  1. Korean Science and Engineering Foundation (KOSEF)
  2. Korea government (MEST) [R11-2008-105-03001-0]
  3. National Research Foundation of Korea [R11-2008-105-03001-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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Donor-pi-(Acceptor)(n) (D-pi-A) type dyes were synthesized and their absorption and emission spectra investigated in different solvents. Strong acceptor units imparted large red-shifts in absorption; the twisting of the dye's structure imposed by an acceptor unit quenched fluorescence. Electron delocalization before and after excitation was observed according to molecular orbital calculations. The results indicated potential use of the dyes as electro-optical materials. (C) 2009 Elsevier Ltd. All rights reserved.

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