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Photoresponsive molecular assembly based on diarylethene (DAE) is an interesting class of supramolecular system as it can allow remarkable morphological transition via small structural changes upon photoisomerization. Herein, we report coassemblies of diarylethene and perylene bisimide through complementary multiple hydrogen-bonding. The open isomer of the diarylethene and the perylene bisimide coassemble...
We investigate the influence of interfacial slip on the layer instability of thin polymer bilayer (polymethylmethacrylate (PMMA)/polystyrene (PS)/solid substrate). In the case of the bilayer system with a high molecular weight (Mw) PMMA upper layer, it is found that the viscosity ratio of the two layers can greatly affect the instability modes of the polymer bilayer and there is a switchover of two...
A combined experimental and computational study is presented to uncover the dewetting kinetics of the PS/PMMA system by changing the film thickness of the PMMA under layer. On the low M w PMMA (M w = 15 kg/mol) layer, the dewetting velocity of PS film firstly rapidly decreases (regime I), and then becomes almost invariant (regime II) with the increase of the film thickness of the...
A layer-by-layer (LbL) adsorption and polymerization method was developed for the controllable preparation of polypyrrole (PPy) nanoparticles within ultrathin films. By repetitive adsorption of pyrrole and subsequent polymerization with 12-molybdophosphoric acid, the polyelectrolyte multilayer films containing PPy nanoparticles were fabricated. UV–visible absorption spectrocopy, Fourier transform...
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