Benzene-Linked Bispyrimidine Compounds

  • Author: Veronika Belusa
  • Published Date: 22 March 2015
  • Source / Publisher: Asian Journal of Organic Chemistry/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
thumbnail image: Benzene-Linked Bispyrimidine Compounds

Two-photon absorption (TPA) materials have gained interest because of their potential applications in optical communication, optical limiting, 3D optical data storage, and up-converted lasing. Compared with inorganic TPA materials, organic two-photon materials have some advantages, such as large absorption coefficients, fast response times, and modifiable chemical structure. Thus, new compounds with strong TPA properties are crucial in order to fully realize potential applications.

Hongjun Zhu, Nanjing Tech University, China, and colleagues have designed, synthesized, and characterized seven multi-dipole and multibranched benzene-linked bispyrimidine derivatives containing a two-layer binary tree structure with different electron donor and acceptor groups. UV/vis spectra (lAbs max =311–371 nm) revealed low optical band gaps (2.98–3.61 eV). The photoluminescence (PL) emission spectra (lEm max = 386–527 nm), stokes shift (2864–6414 cm–1), and the fluorescence quantum yields (Ff) in different solvents suggest that these compounds may be used as solvatochromic materials. Their photophysics and transient difference absorption properties as well as DFT calculations suggest these compounds may be used as optical limiting material.


Article Views: 2994

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

If you would like to reuse any content, in print or online, from, please contact us first for permission and consult our permission guidance prior to making your request

Follow on Facebook Follow on Twitter Follow on YouTube Follow on LinkedIn Follow on Instagram RSS Sign up for newsletters

Magazine of Chemistry Europe (16 European Chemical Societies) published by Wiley-VCH