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Search for "chromophores" in Full Text gives 128 result(s) in Beilstein Journal of Organic Chemistry.

Synthesis of novel photochromic pyrans via palladium- mediated reactions

  • Christoph Böttcher,
  • Gehad Zeyat,
  • Saleh A. Ahmed,
  • Elisabeth Irran,
  • Thorben Cordes,
  • Cord Elsner,
  • Wolfgang Zinth and
  • Karola Rueck-Braun

Beilstein J. Org. Chem. 2009, 5, No. 25, doi:10.3762/bjoc.5.25

Graphical Abstract
  • was investigated by time-resolved absorption spectroscopy in the picosecond time domain. Keywords: benzopyrans; chromenes; naphthopyrans; palladium-mediated coupling reactions; photochromism; Introduction Interest in photoswitchable chromophores for the material and life sciences has increased
  • dramatically over the past decade [1]. In the past, naphthopyrans were primarily commercialized as components for photochromic ophthalmic eyeware [2][3][4][5]. Nowadays, basic research in material sciences tries to implement photoswitchable pyrans and related chromophores as functional parts in organo
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Published 27 May 2009

Reversible intramolecular photocycloaddition of a bis(9-anthrylbutadienyl)paracyclophane – an inverse photochromic system. (Photoactive cyclophanes 5)

  • Henning Hopf,
  • Christian Beck,
  • Jean-Pierre Desvergne,
  • Henri Bouas-Laurent,
  • Peter G. Jones and
  • Ludger Ernst

Beilstein J. Org. Chem. 2009, 5, No. 20, doi:10.3762/bjoc.5.20

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  • the cyclophane acting as a convenient scaffold, as demonstrated previously [18][19]. To avoid steric crowding and excessive distance between the chromophores, it seemed reasonable to select the rigid all-trans butadienyl tether as represented in compound 2 (see Figure 3). The synthesis, molecular
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Published 07 May 2009

Convenient methods for preparing π-conjugated linkers as building blocks for modular chemistry

  • Jiří Kulhánek,
  • Filip Bureš and
  • Miroslav Ludwig

Beilstein J. Org. Chem. 2009, 5, No. 11, doi:10.3762/bjoc.5.11

Graphical Abstract
  • most important goals of modern material chemistry. Organic chemists steadily attempt to design and synthesize novel and well-defined organic push-pull systems with prospective applications as chromophores for nonlinear optics (NLO) [1][2][3][4][5], dyes [6], electronic and photonic devices [7][8
  • ) between the donor (D = NR2, OR groups etc.) and the acceptor (A = NO2, CN groups etc.) is most commonly comprised of double and triple bonds, aromatic and heteroaromatic rings as well as their combinations [14][15][16][17][18][19]. A typical synthetic approach to CT chromophores involves either a stepwise
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Published 14 Apr 2009
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