Visible
Light Responsive Liquid Crystal Polymers Containing Reactive Moieties
with Good Processability
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Abstract
Two
types of novel reactive linear liquid crystal polymers (LLCPs) with
different azotolene concentrations have been synthesized and processed
into films and fibers by solution and melting processing methods.
Then, the LLCPs in the obtained monodomain fiber and polydomain film
were easily cross-linked with difunctional primary amines. The resulted
cross-linked liquid crystal polymers (CLCPs) underwent reversible
photoinduced bending and unbending behaviors in response to 445 and
530 nm visible light at room temperature, respectively. The post-cross-linking
method provides a facile way to prepare the CLCP films and fibers
with different shapes from LLCPs, which can be processed by traditional
melting and solution methods