Matrix Effect on Polydiarylfluorenes Electrospun Hybrid Microfibers: From Morphology Tuning to High Explosive Detection Efficiency

Wei Xue; Man Xu; Chuan-Xin Wei; Hua-Min Sun; Li-Li Sun; Sheng-Jie Wang; Jin-Yi Lin; Nai-En Shi; Ling-Hai Xie; Wei Huang

doi:10.1007/s10118-023-2927-1

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Matrix Effect on Polydiarylfluorenes Electrospun Hybrid Microfibers: From Morphology Tuning to High Explosive Detection Efficiency

RESEARCH ARTICLE | Updated：2023-06-14

- Matrix Effect on Polydiarylfluorenes Electrospun Hybrid Microfibers: From Morphology Tuning to High Explosive Detection Efficiency
  Enhanced Publication
- Chinese Journal of Polymer Science Vol. 41, Issue 7, Pages: 1011-1017(2023)
- Affiliations：
  
  a.State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China
  b.Center for Supramolecular Optoelectronics (CSO), Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China
  c.Frontiers Science Center for Flexible Electronics (FSCFE), Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME), Northwestern Polytechnical University (NPU), Xi'an 710072, China
- Author bio：
  
  iamjylin@njtech.edu.cn (J.Y.L.)
  iamneshi@njupt.edu.cn (N.E.S.)
  wei-huang@njtech.edu.cn (W.H.)
- Funds：
- DOI：10.1007/s10118-023-2927-1
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Wei Xue, Man Xu, Chuan-Xin Wei, et al. Matrix Effect on Polydiarylfluorenes Electrospun Hybrid Microfibers: From Morphology Tuning to High Explosive Detection Efficiency. [J]. Chinese Journal of Polymer Science 41(7):1011-1017(2023)
DOI：

Wei Xue, Man Xu, Chuan-Xin Wei, et al. Matrix Effect on Polydiarylfluorenes Electrospun Hybrid Microfibers: From Morphology Tuning to High Explosive Detection Efficiency. [J]. Chinese Journal of Polymer Science 41(7):1011-1017(2023) DOI： 10.1007/s10118-023-2927-1.

摘要

A flexible polyethylene oxide (PEO)are introduced as the supramolecular matrix to obtain a series of polydiarylfluorenes electrospun hybrid microfibers toward the highly sensitive for detecting explosives, associated with the synergistic effect of β-conformation formation, high deep-blue emission efficiency and surface morphology of ES fibers.

Abstract

Precisely optimizing the morphology of functional hybrid polymeric systems is crucial to improve its photophysical property and further extend their optoelectronic applications. The physic-chemical property of polymeric matrix in electrospinning (ES) processing is a key factor to dominate the condensed structure of these hybrid microstructures and further improve its functionality. Herein, we set a flexible poly(ethylene oxide) (PEO) as the matrix to obtain a series of polydiarylfluorenes (including PHDPF, PODPF and PNDPF) electrospun hybrid microfibers with a robust deep-blue emission. Significantly different from the rough morphology of their poly(,N,-vinylcarbazole) (PVK) ES hybrid fibers, polydiarylfluorenes/PEO ES fibers showed a smooth morphology and small size with a diameter of 1~2 μm. Besides, there is a relatively weak phase separation under rapid solvent evaporation during the ES processing, associated with the hydrogen-bonded-assisted network of PEO in ES fibers. These relative “homogeneous” ES fibers present efficient deep-blue emission (PLQY,>,50%), due to weak interchain aggregation. More interestingly, low fraction of planar (,β,) conformation appears in the uniform PODPF/PEO ES fibers, induced by the external traction force in ES processing. Meanwhile, PNDPF/PEO ES fibers present a highest sensitivity than those of other ES fibers, associated with the smallest diameter and large surface area. Finally, compared to PODPF/PVK fibers and PODPF/PEO amorphous ES fibers, PODPF/PEO ES fibers obtained from DCE solution exhibit an excellent quenching behavior toward a saturated DNT vapor, mainly due to the synergistic effect of small size, weak separation,β,-conformation formation and high deep-blue emission efficiency.

关键词

Keywords

Matrix effectElectrospun fibersPolydiarylfluorenesPlanar conformationExplosive detection

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