Imaging Science and Photochemistry ›› 2011, Vol. 29 ›› Issue (5): 344-352.DOI: 10.7517/j.issn.1674-0475.2011.05.344

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Synthesis and Optical Properties of Novel Long Wavelength Florescent Dyes Based on Naphthalene Diimide

LU Xin-yu1, LIU Hong-wei2, ZHU Wei-hong1   

  1. 1. Key Laboratory for Advanced Materials, Institute of Fine Chemicals, East China University of Science &Technology, Shanghai 200237, P. R. China;
    2. School of Pharmacy, East China University of Science &Technology, Shanghai 200237, P. R. China
  • Received:2011-04-25 Revised:2011-05-25 Online:2011-09-23 Published:2011-09-23

Abstract: Eight highly colored and photoluminescent mono-or di-core-substituted naphthalene diimide(NDIs) have been rationally designed and synthesized from 2,6-dibromonaphthalene diimide(DBI) via a stepwise nucleophilic substitution of two bromine atoms by heterocyclic secondary amine.Electronic absorption and fluorescence studies revealed that the amine substituents with different electron-donating abilities can lead to the NDIs with tunable absorption and emission properties,falling in the preferable region to long wavelength(λmaxabs: 509—580 nm;λmaxem: 565—638 nm;ΦF: 0.21—0.54;Stokes shift: 36—77 nm).

Key words: naphthalene diimide, synthesis, fluorescent dyes, optical tuning

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