紀要論文

オリゴフルオレンをグラフト鎖とするRod-Coil共重合体の合成と蛍光挙動

SYNTHESIS AND FLUORESCENCE BEHAVIOR OF ROD-COIL COPOLYMERS WITH OLIGOFLUORENE UNITS AS GRAFT CHAINS

jpn

24368083

https://doi.org/10.15002/00025286

法政大学大学院理工学研究科

法政大学大学院紀要. 理工学研究科編

63

1

2

2022-03-24

Version of Record

9,9-Dialkyl oligofluorenes end-functionalized with styryl group such as oligo (9,9-dimethylfluorene) (PF(C1)-St) and oligo (9,9-didodecylfluorene) (PF(C12)-St) were successfully prepared by a Suzuki coupling reaction of (7-bromo-9,9-dimethylfluorene-2-yl) boronic acid and (7-bromo-9,9-didodecylfluorene-2-yl) boronic acid followed by end-capping reaction with 4-bromostyrene, respectively. The resulting oligomers were applied for a radical copolymerization with styrene to synthesize the polystyrenes bearing with oligofluorene graft chains (PF(Cx)-g-PS, x = 1, 12). Fluorescence spectrum of the PF(C1)-g-PS film showed an increase of 0→0 transition and a blue shift in comparison with original PF(C1)-St, suggesting the relaxation of intermolecular interaction between oligofluorene units. In addition, phase transition from the β-phase to the α-phase was observed for PF(C12)-g-PS, indicating the effects of long alkyl chains.

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