İncel, AnılVarlıklı, CananMcMillen, Colin D.Demir, Mustafa Muammer2017-10-232017-10-232017İncel, A., Varlıklı, C., McMillen, C. D., and Demir, M. M. (2017). Triboluminescent electrospun mats with blue-green emission under mechanical force. Journal of Physical Chemistry C, 121(21), 11709-11716. doi:10.1021/acs.jpcc.7b028751932-74471932-74551932-7447http://doi.org/10.1021/acs.jpcc.7b02875https://hdl.handle.net/11147/6411Fibrous mechanosensing elements can provide information about the direction of crack propagation and the mechanism of material failure when they are homogeneously dispersed into the bulk volume of materials. A fabrication strategy of fibrous systems showing triboluminescent (TL) responses is in high demand for such applications. In this work, micrometer-sized Cu(NCS)(py)2(PPh3) crystals were synthesized, and polymeric fibrous mats containing the TL crystals were obtained via electrospinning as a stress probe for the determination of mechanical impact. Four different polymeric systems have been employed (PMMA, PS, PU, and PVDF), and the mechano-optical sensing performance of electrospun mats of the polymer-crystal composites was measured. Photophysical properties (quantum yield, band gap, and broadness of the emission) of the TL crystal/electrospun mat composites were also studied. TL and PL emission maxima of the PU-based composite mat show identical behavior due to the chemical affinity between the two structures and the smallest fiber diameter. Moreover, the PU fiber mats exhibit long-lived bluish-green emission persisting over a large number of drops.eninfo:eu-repo/semantics/openAccessEnergy gapPolymersBlue-green emissionsElectrospun matsMechanical impactsArticle2-s2.0-8502063338810.1021/acs.jpcc.7b0287510.1021/acs.jpcc.7b02875