Demonstration of fluorescence enhancement via Bloch surface waves in all-polymer multilayer structures

Fornasari, Lucia; Floris, Francesco; Patrini, M.; Comoretto, Davide; Marabelli, F.

doi:10.1039/c5cp07660a

Cited by 46 publications

(33 citation statements)

References 41 publications

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“…A detailed knowledge of the spectral dispersion of the complex refractive indexes of the materials composing the microcavity is needed for its engineering. While the refractive index of PVK is known, PAA, aPP, and the PEH‐PBI:aPP blend indexes have not been investigated yet. Figure S4 (Supporting Information) describes the refractive index dispersion for these materials as determined by spectroscopic ellipsometry characterization.…”

Section: Resultsmentioning

confidence: 99%

All‐Polymer Photonic Microcavities Doped with Perylene Bisimide J‐Aggregates

Lova

Grande

Manfredi

et al. 2017

Advanced Optical Materials

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Thanks to exciting chemical and optical features, perylene bisimide (PBI) J-aggregates\ud are ideal candidates to be employed for high-performance plastic photonic devices.\ud However, they generally tend to form - stacked H-aggregates that are unsuitable for\ud implementation in polymer resonant cavities. In this work, we demonstrate the efficient\ud compatibilization of a tailored perylene bisimide forming robust J-aggregated\ud supramolecular polymers into amorphous polypropylene. The new nanocomposite was\ud then implemented into an all-polymer planar microcavity which provides strong and\ud directional spectral redistribution of the J-aggregate photoluminescence, owing to a\ud strong modification of the photonic states. A systematic analysis of the photoemitting\ud processes, including photoluminescence decay and quantum yields, shows that the\ud optical confinement in the polymeric microcavity does not introduce any additional nonradiative\ud de-excitation pathways to those already found in the J-aggregate\ud nanocomposite film and pave the way to PBI-based high-performance plastic photonic\ud devices

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Section: Resultsmentioning

confidence: 99%

All‐Polymer Photonic Microcavities Doped with Perylene Bisimide J‐Aggregates

Lova

Grande

Manfredi

et al. 2017

Advanced Optical Materials

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“…The wavelength dependent refractive index of PVK is taken from Refs. [8,30,31] and can be written as…”

Section: Resultsmentioning

confidence: 99%

Multilayer plasmonic photonic structures embedding photochromic molecules or optical gain molecules

Scotognella

2020

Physica E: Low-dimensional Systems and Nanostructures

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We design photonic structures embedding different functional molecular systems of photochromic switching and lasing. We study the light absorption of two photochromic molecules and of 4,4'-bis[(N-carbazole)styryl]biphenyl (BSB-Cz) with density functional theory. For the photochromic diarylethene we derivate the refractive index with Kramers-Kronig relations and we design multilayer photonic structures alternating diarylethene with either poly vinyl carbazole or fluorine indium co-doped cadmium oxide (FICO) nanoparticlebased layers. For BSB-Cz we design a one-dimensional photonic crystal alternating BSB-Cz layers wit SiO2 layers and a microcavity embedding BSB-Cz between indium tin oxide (ITO) / FICO nanoparticle-based multilayers.

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“…For a typical 1D PC multilayer structure, the supported BSW exhibits rather low propagation loss with a millimeter-range propagation constant. This feature has been utilized in many applications, including waveguides [27][28][29], optical sensing [30][31][32][33][34][35][36][37], optical switch [38], Raman scattering, and fluorescence enhancement [39][40][41][42][43]. A drawback associated with such a low propagation loss mode is the relatively weak mode confinement, which results in a very large mode area.…”

Section: Introductionmentioning

confidence: 99%

Bloch-Surface-Polariton-Based Hybrid Nanowire Structure for Subwavelength, Low-Loss Waveguiding

et al. 2018

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Surface plasmon polaritons (SPPs) have been thoroughly studied in the past decades for not only sensing but also waveguiding applications. Various plasmonic device structures have been explored due to their ability to confine their optical mode to the subwavelength level. However, with the existence of metal, the large ohmic loss limits the propagation distance of the SPP and thus the scalability of such devices. Therefore, different hybrid waveguides have been proposed to overcome this shortcoming. Through fine tuning of the coupling between the SPP and a conventional waveguide mode, a hybrid mode could be excited with decent mode confinement and extended propagation distance. As an effective alternative of SPP, Bloch surface waves have been re-investigated more recently for their unique advantages. As is supported in all-dielectric structures, the optical loss for the Bloch surface wave is much lower, which stands for a much longer propagating distance. Yet, the confinement of the Bloch surface wave due to the reflections and refractions in the multilayer structure is not as tight as that of the SPP. In this work, by integrating a periodic multilayer structure that supports the Bloch surface wave with a metallic nanowire structure, a hybrid Bloch surface wave polariton could be excited. With the proposed hybrid nanowire structure, a hybrid mode is demonstrated with the deep subwavelength mode confinement and a propagation distance of tens of microns.

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Demonstration of fluorescence enhancement via Bloch surface waves in all-polymer multilayer structures

Cited by 46 publications

References 41 publications

All‐Polymer Photonic Microcavities Doped with Perylene Bisimide J‐Aggregates

All‐Polymer Photonic Microcavities Doped with Perylene Bisimide J‐Aggregates

Multilayer plasmonic photonic structures embedding photochromic molecules or optical gain molecules

Bloch-Surface-Polariton-Based Hybrid Nanowire Structure for Subwavelength, Low-Loss Waveguiding

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