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Two-photon luminescence and second harmonic generation of single layer molybdenum disulphide nanoprobe for nonbleaching and nonblinking optical bioimaging
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2019 (English)In: Progress In Electromagnetics Research, ISSN 1070-4698, E-ISSN 1559-8985, Vol. 166, p. 107-117Article in journal (Refereed) Published
Abstract [en]

Layered molybdenum disulphide (MoS2) can efficiently emit photoluminescence (PL) excited by visible light. However, one-photon PL of MoS2 for bioimaging purposes suffers from strong autofluorescence and ion-induced PL quenching. Herein, we report single layer chitosan decorated MoS2 nanosheets as nonbleaching and nonblinking optical nanoprobes under near infrared femtosecond laser excitation and their applications for two photon luminescence (TPL) and second harmonic generation (SHG) bioimaging. The TPL can resist the ion-induced quenching by the cellular membrane. The proposed TPL and SHG of single layer MoS2 show great potential for real-time, deep and multiphoton bioimaging.

Place, publisher, year, edition, pages
Electromagnetics Academy , 2019. Vol. 166, p. 107-117
Keywords [en]
Infrared devices, Laser excitation, Layered semiconductors, Light, Luminescence, Molybdenum compounds, Nanoprobes, Nonlinear optics, Photons, Quenching, Sulfur compounds, Autofluorescence, Cellular membranes, Molybdenum disulphide, Near infrared femtosecond laser, Optical nano-probes, Pl quenching, Two-photon luminescence, Visible light, Harmonic generation
National Category
Atom and Molecular Physics and Optics
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URN: urn:nbn:se:kth:diva-272375Scopus ID: 2-s2.0-85077495229OAI: oai:DiVA.org:kth-272375DiVA, id: diva2:1426856
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QC 20200427

Available from: 2020-04-27 Created: 2020-04-27 Last updated: 2020-04-27Bibliographically approved

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He, Sailing

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