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In this work, on the basis of photoinduced surface relief gratings (SRGs) with the rare earth complexes using azopolymers as macromolecular ligands, a series of novel materials for fabricating rewritable fluorescent two-dimensional micropatterns, whose color can be easily adjusted by changing the species of the rare earth ions, are demonstrated. The rare earth complexes are prepared using a series of poly(aryl ether)s containing azobenzene chromophores and carboxyl group as macromolecular ligands and 1,10-phenanthroline as co-ligands. The fluorescence properties of the rare earth complexes and the influence of the contents of azobenzene chromophores on the fluorescent intensity are investigated by means of fluorescence excitation and emission spectroscopy. By exposing the films of the rare earth complexes to an interference pattern laser beam, SRGs can be formed on the films. Under the excitation, fluorescent patterns of the SRGs can be observed by the measurement of fluorescence microscopy.

Two novel poly(arylene ether sulfone)s with high biphenylene content (BDS-PES and BDS-PDBES) are prepared by nucleophilic substitution polymerization of synthesized 4,4 0-bis(4-hydroxyphenyl)diphenyl sulfone (BDS) with 4,4 0-sulfonylbis(fluorobenzene) and 4,4-bis[(4-chlorophenyl)sulfonyl], respectively. The prepared polymers show high glass transition temperature and excellent high-temperature mechanical properties. The glass transition temperature of BDS-PDBES with higher biphenylene content is as high as 300°C, and BDS-PDBES can still maintain its 30% storage modulus at 295°C. In addition, the two novel polymers also show excellent thermal stability (T d5 = 526°C), high elongation at break (ε ≈ 20%), good tensile strength (73 MPa) and modulus (1.73 GPa) and good thermal conductivity (⊗ 300°C = 0.28 W •m −1 •K −1).

Eco-friendly polymeric dyes with excellent thermal stability, good mechanical performance, and robust chemical stability are highly desired for their diverse and practical applications in food, medicine, electronics and aerospace, etc. However, it remains a big challenge to develop them. Herein, a novel type of eco-friendly polymeric dye is fabricated by covalently bonding anthraquinone chromophores onto polyphenylsulfone at a molecular level. The obtained polymeric dyes exhibit excellent thermal stability, with a weight loss of 5% at temperatures above 500 °C in air and negligible changes in both color appearance and transparency after being treated at 200 °C in air for 8 h, good mechanical performance with a tensile strength around 70 MPa, and robust chemical stability with demonstrated insolubility and very outstanding colorfastness and anti-permeability against strong acidic or basic solutions for 7 days at room temperature. These outstanding properties make these polymeric dyes suitable for use in harsh conditions, exceeding existing polymeric dyes, which makes them good to use in some special engineering plastics.