Synthesis and photochromic behavior of some azo-polysiloxanes modified with nucleobases or donor-acceptor groups

Ramona Enea 1 , Ana-Maria Resmeriţă 1 , Laura Petraru 2 , Cristian Grigoraş 3 , Dan Scutaru 1 , Cristofor Simionescu 1 , and Nicolae Hurduc 1
  • 1 Department of Natural and Synthetic Polymers, Faculty of Chemical Engineering, Technical University of Iaşi, Bd. Mangeron 71, 700050, Iaşi, România
  • 2 Institute of Applied Synthetic Chemistry 163 Division of Macromolecular Chemistry, Vienna University of Technology, Getreidemarkt 9, A-1060, Wien, Austria
  • 3 “P.Poni” Insitute of Macromolecular Chemistry of Iaşi, Aleea Gr. Ghica Voda 41A, 700487, Iaşi, România


This paper presents the syntheses, characterization and photochromic behavior of some new azo-polysiloxanes modified with uracil, cytosine or nitro-phenolic groups. Taking into consideration the possibility of generating H-bonds or donor/acceptor interactions, this class of materials present a potential applicability in the immobilization of biomolecules and their nano-manipulations. Also, such compounds are capable of producing a fluid phase, with directional flowing capacity. For all these polymers, the molecular modeling simulations have shown disordered structures, which would generate amorphous phases, a very important aspect for molecules’ nano-manipulation. The photochromic behavior in the presence of UV irradiation was also evaluated.

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