The soluble photosensitive polyimides were synthesized by the copolymerization of 3,3′-diaminochalcone (mDAC),bis(3-aminophenyl)-3,5-bis(trifluoromethyl)phenyl phosphine oxide (mDA6FPPO) and 4,4′-(hexafluoroisopropy...The soluble photosensitive polyimides were synthesized by the copolymerization of 3,3′-diaminochalcone (mDAC),bis(3-aminophenyl)-3,5-bis(trifluoromethyl)phenyl phosphine oxide (mDA6FPPO) and 4,4′-(hexafluoroisopropylidene)-diphthalic anhydride (6FDA).The polymers were characterized by FT-IR spectrum, and the properties of polymers were also discussed.The results show that the polyimides have excellent solubility in conventional organic solvents such as NMP,DMF,THF and acetone.The T_ gs of polyimides are ranged in 256℃～277℃.The polymers are stable up to over 400℃ and the residual weights at 800℃ are between 46%～50%.The resulting polyimides have good adhesive properties,and they were found to increase with increasing the mDA6FPPO content.The photosensitivity of the polymers was investigated by observations of UV-Vis spectral changes during UV irradiation.展开更多
The host molecule, bis (diphenylphosphine oxide) butadiyne (2), includes a variety of guests to form five complexes (2a—2e). In addition, the Diels-Alder reaction between 2 and anthracene gives 9, 9′, 10, 10′-tetra...The host molecule, bis (diphenylphosphine oxide) butadiyne (2), includes a variety of guests to form five complexes (2a—2e). In addition, the Diels-Alder reaction between 2 and anthracene gives 9, 9′, 10, 10′-tetrahedron-9, 9′, 10, 10′-bi-ethenoantracene-11, 11′-bis (diphenylphosphine oxide) (3) which is a potential di-π-methane reactant and can undergo photorearrangement.展开更多
文摘The soluble photosensitive polyimides were synthesized by the copolymerization of 3,3′-diaminochalcone (mDAC),bis(3-aminophenyl)-3,5-bis(trifluoromethyl)phenyl phosphine oxide (mDA6FPPO) and 4,4′-(hexafluoroisopropylidene)-diphthalic anhydride (6FDA).The polymers were characterized by FT-IR spectrum, and the properties of polymers were also discussed.The results show that the polyimides have excellent solubility in conventional organic solvents such as NMP,DMF,THF and acetone.The T_ gs of polyimides are ranged in 256℃～277℃.The polymers are stable up to over 400℃ and the residual weights at 800℃ are between 46%～50%.The resulting polyimides have good adhesive properties,and they were found to increase with increasing the mDA6FPPO content.The photosensitivity of the polymers was investigated by observations of UV-Vis spectral changes during UV irradiation.
基金Project supported by the National Natural Science Foundation of China (No. 29572054) and the Natural Science Foundation of Tianjin (No. 963604711).
文摘The host molecule, bis (diphenylphosphine oxide) butadiyne (2), includes a variety of guests to form five complexes (2a—2e). In addition, the Diels-Alder reaction between 2 and anthracene gives 9, 9′, 10, 10′-tetrahedron-9, 9′, 10, 10′-bi-ethenoantracene-11, 11′-bis (diphenylphosphine oxide) (3) which is a potential di-π-methane reactant and can undergo photorearrangement.
