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

Autor: Ramona Enea, Ana-Maria Resmeriţă, Laura Petraru, Cristian Grigoraş, Dan Scutaru, Cristofor Simionescu, Nicolae Hurduc
Zdroj: Central European Journal of Chemistry; Dec2007, Vol. 5 Issue 4, p981-995, 15p
Abstrakt: Abstract  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. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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