Stretchable light‐emitting polymers are important for wearable electronics; however, the development of intrinsic stretchable light‐emitting materials with great performance under large applied strain is the most critical challenge. Herein, this study demonstrates the fabrication of stretchable fluorescent poly[(9,9‐bis(3′‐(N,N‐dimethylamino)propyl)‐2,7‐fluorene)‐alt‐2,7‐(9,9‐dioctyl‐fluorene)]/acrylonitrile butadiene rubber (PFN/NBR) blend nanofibers using the uniaxial electrospinning technique. The physical interaction of PFN with NBR and the geometrical confinement of nanofibers are employed to reduce PFN aggregation, leading to the high photoluminescence quantum yield of 35.7%. Such fiber mat film shows stable blue emission at the 50% strain for 200 stretching/release cycles, which has potential applications in smart textiles.

中文翻译：

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通过物理相互作用和几何约束的可拉伸荧光聚芴/丙烯腈丁二烯橡胶共混电纺纤维

可拉伸的发光聚合物对于可穿戴电子设备很重要。然而，最重要的挑战是开发在大应用应变下具有出色性能的内在可拉伸发光材料。本文中，这项研究证明了可拉伸荧光聚[[9,9-bis（3'-（N，N-二甲氨基）丙基）-2,7-芴）alt-2,7-（9,9-二辛基-芴）] /丙烯腈丁二烯橡胶（PFN / NBR）使用单轴电纺丝技术混合纳米纤维。PFN与NBR的物理相互作用以及纳米纤维的几何约束被用于减少PFN聚集，从而导致35.7％的高光致发光量子产率。这种纤维毡膜在200％的拉伸/释放循环中在50％应变下显示稳定的蓝色发射，这在智能纺织品中具有潜在的应用。