Unraveling the surface properties of PMMA/azobenzene blends as coating films with photoreversible surface polarity.

ABSTRACT: Various reports demonstrated that azobenzene derivatives are the chromophore of choice in photoresponsive surfaces showing reversible surface polarity. Hitherto the surface study of coating films based on polymer/azobenzene blends using contact angle measurements remained unexplored. To provide insight into the surface polarity of polymer/dye blend films, poly(methyl methacrylate) (PMMA) blends containing photoresponsive 4-hydroxy-4'-methylazobenzene (AZO1) and 4,4'-dimethylazobenzene (AZO2) as coating films on clear glass substrates are investigated in this work. Contact angle measurements were carried out to unravel the role of substituents in the surface polarity and the orientation of chromophores in the coating matrices before and after UV light (λ _max = 365 nm) irra

SUBMITTER: Hisham S 

PROVIDER: S-EPMC8698230 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature