•Piezoelectric nanofibers were prepared by “near distance-wheeling” electrospinning.•The XRD and FT-IR spectra show that the oriented β crystal form is dominant.•The electrospun fibers were in-situ assembled into full-fiber sensors.•The prepared full-fiber sensor showed notable piezoelectric properties.•The breathable full-fiber sensor can be appliedon intelligent clothes.Straight polyvinylidene difluoride (PVDF)/nanoclay nanofibers with enhanced piezoelectric properties were fabricated by a “near distance-wheeling” electrospinning (NWS) method. In this method, the fibers were electrospun under centimeter scale spinning distance, high electric field and high mechanical stretching. The XRD and FT-IR spectra showed that the oriented β crystal form was dominant in the straight composite fiber, which may be caused by the cooperative effect of NWS and nanoclay. The electrospun fibers were in-situ assembled into full-fiber sensors. The full-fiber sensor based on the straight PVDF/nanoclay fibers showed notable piezoelectric properties with good response speed and reproducibility, which can be applied on intelligent clothes.

TiO2 nanoparticles were introduced into the soluble sulfonium precursor of PPV (Poly(p-phenylene vinylene)) during the synthesis procedure of precursor. Later, PPV–TiO2 nanofibers were prepared by electrospinning of precursor–TiO2 solution, followed by thermal conversion. The fluorescence microscopy images showed that the resulting nanofibers exhibited outstanding emission properties. No significant differences were observed in photoluminescence spectra of PPV–TiO2 and PPV fibers. A single oriented PPV–TiO2 nanofiber can be obtained on the substrate by a modified electrospinning method, which is favorable for some practical applications such as electrical and optical nanodevices.Highlights► Conjugated polymer PPV–TiO2 nanofibers were prepared by electrospinning. ► The polymer–inorganic interfaces were free of organic surfactants. ► The fluorescence microscopy images showed that the resulting nanofibers exhibited outstanding emission properties. ► No significant differences were observed in photoluminescence spectra of PPV–TiO2 and PPV fibers.

TiO2 nanoparticles were introduced into the soluble sulfonium precursor of PPV (Poly(p-phenylene vinylene)) during the synthesis procedure of precursor. Later, PPV–TiO2 nanofibers were prepared by electrospinning of precursor–TiO2 solution, followed by thermal conversion. The fluorescence microscopy images showed that the resulting nanofibers exhibited outstanding emission properties. No significant differences were observed in photoluminescence spectra of PPV–TiO2 and PPV fibers. A single oriented PPV–TiO2 nanofiber can be obtained on the substrate by a modified electrospinning method, which is favorable for some practical applications such as electrical and optical nanodevices.Highlights► Conjugated polymer PPV–TiO2 nanofibers were prepared by electrospinning. ► The polymer–inorganic interfaces were free of organic surfactants. ► The fluorescence microscopy images showed that the resulting nanofibers exhibited outstanding emission properties. ► No significant differences were observed in photoluminescence spectra of PPV–TiO2 and PPV fibers.