Jump to main content
Jump to site search

Issue 43, 2018, Issue in Progress
Previous Article Next Article

Stacked electrospun polymer nanofiber heterostructures with tailored stimulated emission

Author affiliations

Abstract

We present stacked organic lasing heterostructures made by different species of light-emitting electrospun fibers, each able to provide optical gain in a specific spectral region. A hierarchical architecture is obtained by conformable layers of fibers with disordered two-dimensional organization and three-dimensional compositional heterogeneity. Lasing polymer fibers are superimposed in layers, showing asymmetric optical behavior from the two sides of the organic heterostructure, and tailored and bichromatic stimulated emission depending on the excitation direction. A marginal role of energy acceptor molecules in determining quenching of high-energy donor species is evidenced by luminescence decay time measurements. These findings show that non-woven stacks of light-emitting electrospun fibers doped with different dyes exhibit critically-suppressed Förster resonance energy transfer, limited at joints between different fiber species. This leads to the obtaining of hybrid materials with mostly physically-separated acceptors and donors, thus largely preventing donor quenching and making it much easier to achieve simultaneous lasing from multiple spectral bands. Coherent backscattering experiments are also performed on the system, suggesting the onset of random lasing features. These new organic lasing systems might find application in microfluidic devices where flexible and bidirectional excitation sources are needed, optical sensors, and nanophotonics.

Graphical abstract: Stacked electrospun polymer nanofiber heterostructures with tailored stimulated emission

Back to tab navigation

Publication details

The article was received on 27 Apr 2018, accepted on 07 Jun 2018 and first published on 03 Jul 2018


Article type: Paper
DOI: 10.1039/C8RA03640C
Citation: RSC Adv., 2018,8, 24175-24181
  • Open access: Creative Commons BY license
  •   Request permissions

    Stacked electrospun polymer nanofiber heterostructures with tailored stimulated emission

    L. Sznitko, L. Romano, D. Wawrzynczyk, K. Cyprych, J. Mysliwiec and D. Pisignano, RSC Adv., 2018, 8, 24175
    DOI: 10.1039/C8RA03640C

    This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements