Among all the phase morphologies of poly(9,9-di-n-octylfluorenyl-2,7-diyl)(PFO),the𝛽phase exhibits a zigzag coplanar arrangement with the highest conjugation degree.As a result,the𝛽-phasePFO has extrao...Among all the phase morphologies of poly(9,9-di-n-octylfluorenyl-2,7-diyl)(PFO),the𝛽phase exhibits a zigzag coplanar arrangement with the highest conjugation degree.As a result,the𝛽-phasePFO has extraordinary prop-erties,including enhanced charge carrier mobility.In this work,we report the formation of high-𝛽-phase PFO in nanoparticles(NPs)due to the synergistic effect of the slow crystallization of PFO in nanodroplet confinement and polystyrene(PS)blending.The𝛽-phase content of PFO can be flexibly tuned by varying the NP size,molec-ular weight(M w),or relative PS content in the NPs.The novel systems demonstrated in this study are likely to provide valuable insights into the𝛽-phase formation mechanism of PFO.As a proof of concept,we further demonstrate that NPs of PFO:PS(1:8)with a higher𝛽-phase content lead to improved photocatalyst efficiency at lower material costs,allowing for novel designs of efficient and visible-light-driven photocatalytic NPs.展开更多
文摘Among all the phase morphologies of poly(9,9-di-n-octylfluorenyl-2,7-diyl)(PFO),the𝛽phase exhibits a zigzag coplanar arrangement with the highest conjugation degree.As a result,the𝛽-phasePFO has extraordinary prop-erties,including enhanced charge carrier mobility.In this work,we report the formation of high-𝛽-phase PFO in nanoparticles(NPs)due to the synergistic effect of the slow crystallization of PFO in nanodroplet confinement and polystyrene(PS)blending.The𝛽-phase content of PFO can be flexibly tuned by varying the NP size,molec-ular weight(M w),or relative PS content in the NPs.The novel systems demonstrated in this study are likely to provide valuable insights into the𝛽-phase formation mechanism of PFO.As a proof of concept,we further demonstrate that NPs of PFO:PS(1:8)with a higher𝛽-phase content lead to improved photocatalyst efficiency at lower material costs,allowing for novel designs of efficient and visible-light-driven photocatalytic NPs.
