ArticleMaterials (Basel, Switzerland)2019
Fluorescent PCDTBT Nanoparticles with Tunable Size for Versatile Bioimaging.
Article in Materials (Basel, Switzerland), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Targeted design of organic Janus particles for improved photocatalytic hydrogen evolution.Chemical science · 2025Article
- The Role of Intermolecular Interaction on Aggregation-Induced Emission Phenomenon and OLED Performance.Materials (Basel, Switzerland) · 2022Article
- FRET-mediated quenching of BODIPY fluorescent nanoparticles by methylene blue and its application to bacterial imaging.Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology · 2022Article
- Fluorescent Submicron-Sized Poly(heptafluoro-Molecules (Basel, Switzerland) · 2020Article
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Authors and funding
8 authors.
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Abstract
Conjugated polymer nanoparticles exhibit very interesting properties for use as bio-imaging agents. In this paper, we report the synthesis of PCDTBT (poly([9-(1'-octylnonyl)-9H-carbazole-2,7-diyl]-2,5-thiophenediyl-2,1,3-benzothiadiazole-4,7-diyl-2,5-thiophene-diyl)) nanoparticles of varying sizes using the mini-emulsion and emulsion/solvent evaporation approach. The effect of the size of the particles on the optical properties is investigated using UV-Vis absorption and fluorescence emission spectroscopy. It is shown that PCDTBT nanoparticles have a fluorescence emission maximum around 710 nm, within the biological near-infrared "optical window". The photoluminescence quantum yield shows a characteristic trend as a function of size. The particles are not cytotoxic and are taken up successfully by human lung cancer carcinoma A549 cells. Irrespective of the size, all particles show excellent fluorescent brightness for bioimaging. The fidelity of the particles as fluorescent probes to study particle dynamics in situ is shown as a proof of concept by performing raster image correlation spectroscopy. Combined, these results show that PCDTBT is an excellent candidate to serve as a fluorescent probe for near-infrared bio-imaging.
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