Smart materials with versatile chromic response to external stimuli developed by macromolecular engineering

 Scientific reports

Stage 1

        The aim of SMARTCrom project is to develop new polymeric architectures which will be able to be processed into smart materials being capable of a reversible chromic response to external stimuli, such as electric potential, metallic ions or UV light, for applications in advanced technologies. In the first stage of the project it is reported the synthesis of a new monomer with a diamine structure and three corresponding polyimides, representing the support polymers which will be functionalized in the following stages, with various receptors sensible to external stimuli. It is expected that each of the receptors which will be introduced in these polymeric substrates will drastically modify the physico-chemical properties of the corresponding material. Thus, in this stage we performed the physico-chemical characterization of the support polymers, in order to easily understand the modifications induced by the functionalities introduced as receptors (which will be performed in the next stages). The polymers were thoroughly characterized with respect to their thermal, mechanical, optical and electrochemical properties...

Stage 2

        The Stage 2 of SMARTCrom project in 2018 had as the main objective the development through macromolecular engineering of chromic materials able to respond to stimuli as light radiation or metal ions. To fulfill this objective 9 polymers with photochromic response were obtained as well as 4 polymers with ionochromic properties. Also, the investigations of physico-chemical properties of the polymers, especially on the structure-property correlation and their performance were made...

Stage 3: 

     The Stage 3 of SMARTCrom project in 2019 had as main objective the development through macromolecular engineering of chromic materials able to respond to stimuli such as electrical potential or metal ions. To achieve this objective, nine polymers with electrochromic response, four polymers with ionochromic properties and three polymers containing two or even three of the ionochromic, photochromic or electrochromic receptors were synthesized...