Photoswitchable molecular dipole antennas with tailored coherent coupling in glassy composite

Mady Elbahri; Ahnaf Usman Zillohu; Bastian Gothe; Mehdi Keshavarz Hedayati; Ramzy Abdelaziz; Hala Jarallah El-Khozondar; Muhammad Bawa'aneh; Moheb Abdelaziz; Andrei Lavrinenko; Sergei Zhukovsky; Shahin Homaeigohar

doi:10.1038/lsa.2015.89

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Photoswitchable molecular dipole antennas with tailored coherent coupling in glassy composite

Original Articles

- Photoswitchable molecular dipole antennas with tailored coherent coupling in glassy composite
- Light: Science & Applications Vol. 4, Issue 3, (2015)
- Affiliations：
  
  1.Nanochemistry and Nanoengineering, Faculty of Engineering, Institute for Materials Science, University of Kiel, Kaiserstrasse 2, 24143 Kiel, Germany
  2.Nanochemistry and Nanoengineering, Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Strasse 1, 21502 Geesthacht, Germany
  3.Refractories, Ceramics and Building Materials Department, National Research Centre, Dokki, Cairo, Egypt
  4.Electrical Engineering Department, Islamic University of Gaza, Gaza, PO Box 108, Palestine
  5.The Hashemite University, Department of Physics, Zarqa, Jordan & Khalifa University of Science, Technology & Research (KUSTAR), PO Box 573, Sharjah, UAE
  6.DTU Fotonik, Technical University of Denmark, Oersteds pl. 343, Kongens Lyngby, DK-2800, Denmark
- Author bio：
  
  M Elbahri, Email: me@tf.uni-kiel.de
- Funds：
- DOI：10.1038/lsa.2015.89
  CLC：
- Published：2015-09，
  
  Published Online：09 April 2015，
  
  Received：01 August 2014，
  
  Revised：23 March 2015，
  
  Accepted：08 April 2015
- Accepted：
Scan QR Code
Elbahri, M. et al. Photoswitchable molecular dipole antennas with tailored coherent coupling in glassy composite. Light: Science & Applications, 4, e316 (2015).
DOI：

Elbahri, M. et al. Photoswitchable molecular dipole antennas with tailored coherent coupling in glassy composite. Light: Science & Applications, 4, e316 (2015). DOI： 10.1038/lsa.2015.89.

摘要

Abstract

Here

we introduce the first experimental proof of coherent oscillation and coupling of photoswitchable molecules embedded randomly in a polymeric matrix and acting cooperatively upon illumination with UV light. In particular

we demonstrate the specular reflection and Brewster phenomenon alteration of photochromic molecular dipole antennas. We successfully demonstrate the concept of Brewster wavelength

which is based on the dipolar interaction between radiating dipoles and the surrounding matrix possessing a net dipole moment

as a key tool for highly localized sensing of matrix polarity. We also introduce the concept of 'tailored molecular photonic coupling' while highlighting the role of interferences for the design of optically active media by adjusting the photonic response of the medium with the real and imaginary refractive index of photoswitchable molecules in the 'ON' state. Our results enhance our fundamental understanding of coherent dipole radiation and open a new vein of research based on glassy disordered dipolar composites that act as macroscopic antenna with cooperative action; furthermore

these results have important implications for new design rules of tailored photonics.

关键词

Keywords

Brewster anglecoherent couplingcollective oscillationphotoswitchable molecular photonicsspecular reflection

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