Morphological study of the organization behavior of rod-coil copolymers and their blends in thin solid films.
A detailed study of the self-assembly ability of triblock coil-rod-coil copolymers containing a rigid di(styryl)-anthracene segment covalently linked to oxadiazole-based blocks and their binary blends with oxadiazole-based homopolymers is presented here. The self-organized microdomains seem to pack into a fascinating ordered hexagonal structure obtained at a critical concentration without any significant influence of the sample preparation method, based on evidence obtained by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and fluorescence microscopy studies. The compatibilization efficiency of these coil-rod-coil copolymers in polymer blends composed of an electron-accepting polyoxadiazole and a luminescent polyanthracene-based pair was studied by atomic force microscopy (AFM). The common feature of all observed morphologies is the compatibilizing function of the rod-coil molecule, which intercalates between the incompatible domains to prevent the formation of well-defined phase separated nanostructured surfaces.
Tzanetos
Nikos P
NP
Department of Chemistry, University of Patras, G.R.-26500 Patras, Greece.
Dracopoulos
Vassilis
V
Kallitsis
Joannis K
JK
Deimede
Valadoula A
VA
D000873:Anthracenes / Q000737:chemistry; D001672:Biocompatible Materials / Q000737:chemistry*; D008567:Membranes, Artificial; D018625:Microscopy, Atomic Force; D008855:Microscopy, Electron, Scanning; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D011108:Polymers / Q000737:chemistry*; D013343:Styrenes / Q000737:chemistry; D013499:Surface Properties
D000873:Anthracenes; D001672:Biocompatible Materials; D008567:Membranes, Artificial; D011108:Polymers; D013343:Styrenes; C034020:anthracene