New core–shell hybrid nanoparticles for biophotonics: fluorescent organic nanocrystals confined in organosilicate spheres

Philippot, Cécile; Dubois, Fabien; Boury, Bruno; Prat, Alain; Ibanez, Alain

doi:10.1039/c2jm30875d

Cited by 14 publications

(13 citation statements)

References 47 publications

(82 reference statements)

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“…[37][38][39][40][41] Inorganic-organic hybrid materials possess huge potential in the synthesis of new functional materials 42 for lightemitting and quantum-dot devices, photonics, photodetectors, solar cells, biomedical and sensor applications. [43][44][45][46][47][48][49][50] Hybrid CSPs are usually prepared in nano size particles and also known as hybrid nanoparticles (NPs). The core of this particular class of core-shell nanoparticles is made of a polymer, such as polystyrene, poly(ethylene oxide), polyurethane, poly(vinyl benzyl chloride), poly(vinyl pyrrolidone), dextrose, surfactant, and different copolymers, such as acrylonitrile butadiene styrene, poly(styrene acrylic acid), and poly(styrene methyl methacrylate).…”

Section: Non-hydrogel Core-shell Polymermentioning

confidence: 99%

Core–shell polymers: a review

2013

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Section: Non-hydrogel Core-shell Polymermentioning

confidence: 99%

Core–shell polymers: a review

2013

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“…These recently described core–shell NPs, which comprise a nanocrystalline organic-dye core (ca. 40–50 nm) surrounded by a silicate shell, are prepared by a novel spray-drying technique which combines sol–gel chemistry and crystallization. ,− The organic dyes used in the core–shell NPs are based on the D-π–A dipolar structure and are specifically designed to exhibit two-photon absorption in the crystal state . The permanent dipole moment associated with such structures results in strong dipole–dipole interactions, which in turn can induce specific organization and orientation of the molecules in the solid state .…”

Section: Introductionmentioning

confidence: 99%

Ultrabright Silica-Coated Organic Nanocrystals for Two-Photon In Vivo Imaging

Perdoor

Dubois

Barbara

et al. 2020

ACS Appl. Nano Mater.

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Herein, we demonstrate the potential of ultrabright fluorescent silica-coated organic nanocrystals for two-photon in vivo imaging. These unique nanoparticles (NPs) containing a crystalline core of small push-pull dipolar dye are specifically designed to exhibit two-photon absorption for 2 fluorescence imaging. The NPs can be easily functionalized using click chemistry in pure water, with preservation of the organic core. A novel small-volume DLS technique was used to evaluate the effect of PEGylation on the colloidal stability of the NPs in complex media containing salts and proteins, mimicking the composition of blood serum. The potential of these bright red-emitting NPs for two-photon fluorescence imaging is demonstrated both in vitro and in vivo.

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“…light concentrators in solar cells [5]. Recently the incorporation of dyes in small particles has opened a promising field toward the development of new luminescent biolabel and nanonometer-sized fluorescent hybrid silica particles for fluorescence imaging [7][8][9][10]. Moreover interesting phenomena as optical scattering and interference effects relevant for the photonic crystals have been observed [11].…”

Section: Introductionmentioning

confidence: 99%