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The capacity of nucleobases containing azo-polysiloxanes to generate a surface relief grating

R. ENE1, N. HURDUC2, I. APOSTOL1,* , V. DAMIAN1, I. IORDACHE1, D. APOSTOL1

Affiliation

  1. National Institute for Laser, plasma and Radiation Physics, Atomistilor str. 409, Bucharest-Magurele, Romania
  2. Technical University of Iasi, Department of Natural and Synthetic Polymers, Bd. Mangeron 71, 700050-Iasi, Romania

Abstract

In recent years polymers containing main-chain or side-chain azobenzene groups have been attracting a great deal of attention because of their potential application in opto-electronic field, biology, energy storage etc. The most important properties of azobenzene groups are the photochemical trans-cis isomerisation induced by UV or visible light, having as a result conformational changes induced in the entire polymer chains. One of the consequences of the photo-induced conformational change is the possibility to obtain a surface relief grating (SRG) that presents a potential interest for increasing the efficiency of the photo-luminescent diodes or in the field of organic micro-lasers and biomedical materials. Here we show the possibility to obtain azo-polysiloxanes modified with nucleobases, and their light induced surface processing with potential interest in opto-electronic (SRG) or for the biomolecules nano-manipulation. The investigated polymers were obtained in a two-step reaction, starting from a polysiloxane containing chlorobenzyl groups in the sidechain. The photochromic behavior of the synthethized materials was investigated in solution. The UV light induced effects were investigated using thin films deposited on the surface of quartz slides. Surface relief gratings were induced under the action of UV laser radiation..

Keywords

Azo-polysiloxane, Nucleobase, Surface relief grating.

Submitted at: Feb. 21, 2008
Accepted at: March 17, 2008

Citation

R. ENE, N. HURDUC, I. APOSTOL, V. DAMIAN, I. IORDACHE, D. APOSTOL, The capacity of nucleobases containing azo-polysiloxanes to generate a surface relief grating, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 3, pp. 541-544 (2008)