E-viri
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Hsieh, Hui-Ching; Hung, Chih-Chien; Watanabe, Kodai; Chen, Jung-Yao; Chiu, Yu-Cheng; Isono, Takuya; Chiang, Yun-Chi; Reghu, Renji R; Satoh, Toshifumi; Chen, Wen-Chang
07/2018, Letnik: 9, Številka: 27Journal Article
We report the synthesis, morphology, and photophysical properties of new conjugated rod-coil block copolymers consisting of poly2,7-(9,9-dihexylfluorene) (PF) conjugated rods and soft poly( n -butyl acrylate) (PBA) coils for stretchable light-emitting device applications. The PF- b -PBA thin films could form obvious self-assembled nanofibrillar structures after the solvent annealing treatment. Besides this, both the deformability and optical properties of block copolymers were controllable by varying the PF/PBA ratio. The annealed PF 4k - b -PBA 7k thin film exhibited pure blue emission with a high photoluminescence quantum yield of over 22.5% under 100% strain, validating the excellent stretchability and promising stability. Furthermore, a stretchable and fluorescent PF- b -PBA based microporous template with tunable regularity can be fabricated through the breath figure method. These results demonstrated that the novel intrinsically deformable and luminescent rod-coil block copolymers could have versatile applications in stretchable light-emitting devices. Novel deformable and fluorescent PF- b -PBA copolymers with nanofibrillar structures were synthesized for unraveling strain-dependent optical properties.
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