The bilayer devices using a mixture film of triplet emitting material Cu 4(C≡CPh 4) 4L 2[L=1,8 bis(diphenyl phosphino) 3,6 dioxaoctane](Cu 4) and hole transport polymer poly(9 vinylcarbazole)(PVK) as emitting layer, electron transport material TAZ as the electron transport layer were prepared. Different devices that formed by varied Cu 4 ratios show different light emitting properties through singlet triplet and triplet triplet energy transfer. The result showed a new application of triplet emitting materials.
A novel bioinspired phospholipid copolymer was synthesized by the free radical polymerization of poly-2-methacryloyloxyethylphosphorylcholine(MPC), stearyl methacrylate(SMA), hydroxypropyl methacrylate(HPMA) and trimethoxysilylpropyl methacrylate(TSMA). A stable cross-linked coating was obtained via dip-coating, followed by curing at 70 ℃ for 9 h. Contact angle results indicate the coating surface rearrange to get a more hydrophilic surface on the polymer/water interface. The membrane mimic phosphorylcholine coating surface can resist the platelet adhesion and prolong plasma recalcification time significantly. Rhodamine S was used as model drugs to prepare drug-containing coating under the same conditions. Drug-releasing curves fall into Fickian release mechanism and there exists an efficient releasing-amount of the drug until 60 h.
