Preparation and optical properties of hybrid coatings based on epoxy-modified silane and rhodamine B

Zaręba-Grodź, Iwona; Pązik, Robert; Hermanowicz, K.; Stręk, W.; Maruszewski, K.

doi:10.1016/j.jlumin.2005.12.023

Cited by 17 publications

(12 citation statements)

References 12 publications

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“…Afterwards, a portion of the primary amine groups in the HMMNS‐NH 2 was used to react with RBITC dye via a thiourea linkage, and the unreacted dye was subsequently removed. As shown in Figure 3Dc, the FTIR spectrum of HMMNS‐NH 2 /RBITC presents a new band at 1593 cm −1 (N–H deformation vibration) due to the formation of the thiourea structure and some new bands located at 1560–1400 cm −1 can be ascribed to the stretching vibrations of the benzene skeleton in the rhodamine B groups 22. In addition, the characteristic absorbance bands at 500–600 nm in the UV–vis spectrum and the intense luminescence with a maximal wavelength of 579 nm in the photoluminescence (PL) spectrum (Figure S3) further confirm the successful conjugation of the luminescent dye.…”

Section: Resultsmentioning

confidence: 95%

A Hollow‐Core, Magnetic, and Mesoporous Double‐Shell Nanostructure: In Situ Decomposition/Reduction Synthesis, Bioimaging, and Drug‐Delivery Properties

Zhang

et al. 2011

Adv Funct Materials

161

104

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A novel in situ decomposition/reduction approach is developed to manufacture hollow core, magnetic, and mesoporous double-shell nanostructures (HMMNSs) via in situ decomposition and reduction of a β -FeOOH nanorod core and organosilicate-incorporated silica-shell precursor. The formed HMMNSs are then aminated by silanization for further covalent conjugation to rhodamine B isothiocyanate (RBITC) and poly(ethylene glycol) (PEG) chains. The resultant RBITC-grafted and PEGylated nanocomposites (HMMNS-R/Ps) have excellent blood compatibility and very low cytotoxicity towards HeLa and MCF-7 cells, and can be taken up by cancer cells effectively in a dose-dependent manner, as confi rmed by in vitro fl ow cytometry, confocal luminescence imaging, and magnetic resonance imaging (MRI) studies. In vivo MRI studies coupled with Prussian blue staining of slides from different organs show that the nanocomposites preferentially accumulate in liver and spleen after intravenous injection, which suggests a potential application of the nanocomposites as MRI contrast agents. Importantly, the HMMNS-R/P nanocomposites show high loading capacity for water-insoluble anticancer drugs (docetaxel or camptothecin) owing to the presence of a large inner cavity and enhanced surface area and pore volume. Furthermore, the drugloaded nanocomposites exhibit greater cytotoxicity than the corresponding free drugs. These results confi rm that the HMMNS-R/P nanocomposites are promising candidates for simultaneous bioimaging and drug delivery.

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Section: Resultsmentioning

confidence: 95%

A Hollow‐Core, Magnetic, and Mesoporous Double‐Shell Nanostructure: In Situ Decomposition/Reduction Synthesis, Bioimaging, and Drug‐Delivery Properties

Zhang

et al. 2011

Adv Funct Materials

161

104

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“…The peak at 462 cm À1 comes from the rocking motions of oxygen atoms perpendicular to the Si-O-Si plane. Absorption bands centered at 801, 945, and 1088 cm À1 should be attributed to the stretching vibrations of the Si-OH or SiO-groups [20].…”

Section: Resultsmentioning

confidence: 99%

Preparation and characterization of a novel luminescent nanoparticles

Ren

Sun

et al. 2010

Journal of Luminescence

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“…Here we report a new light emitting, jettable, solvent-free ink, based on a photoacid catalysed organic-inorganic hybrid formulation, containing monomers with epoxy and silane functionalities and a luminescent dye. Rhodamine B, which has been successfully integrated in other hybrid matrices, has been chosen here as light emissive moiety [54,55,56,57,58,59,60]. After deposition, UV irradiation of the inks leads to the cationic ring-opening polymerization of epoxy functionalities and the hydrolysis and condensation of silanes.…”

Section: Introductionmentioning

confidence: 99%

Digital Luminescence Patterning via Inkjet Printing of a Photoacid Catalysed Organic-Inorganic Hybrid Formulation

et al. 2019

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Accurate positioning of luminescent materials at the microscale is essential for the further development of diverse application fields including optoelectronics, energy, biotechnology and anti-counterfeiting. In this respect, inkjet printing has recently attracted great interest due to its ability to precisely deposit with high throughput and no contact, functional materials on different types of substrates. Here, we present a novel photoacid catalysed organic-inorganic hybrid luminescent ink. The formulation, containing monomers bearing epoxy and silane functionalities, a photoacid generator and a small percentage of Rhodamine-B, shows good jetting properties and adequate wetting of the deposited droplets on the receiving substrates. Ultraviolet exposure of the deposited material triggers the cationic ring-opening polymerization reaction of the epoxy groups. Concomitantly, if atmospheric water is available, hydrolysis and condensation takes place, overall leading to a luminescent crosslinked hybrid organic-inorganic polymeric material obtained through a simple one-step curing process, without post baking steps. Advantageously, protection of the ink from actinic light delays the hydrolysis and condensation conferring long-term stability to the ink. Digital patterning leads to patterned emissive surfaces and elements with good adhesion to different substrates, mechanical and optical properties for the fabrication of optical and photonic elements and devices.

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Preparation and optical properties of hybrid coatings based on epoxy-modified silane and rhodamine B

Cited by 17 publications

References 12 publications

A Hollow‐Core, Magnetic, and Mesoporous Double‐Shell Nanostructure: In Situ Decomposition/Reduction Synthesis, Bioimaging, and Drug‐Delivery Properties

A Hollow‐Core, Magnetic, and Mesoporous Double‐Shell Nanostructure: In Situ Decomposition/Reduction Synthesis, Bioimaging, and Drug‐Delivery Properties

Preparation and characterization of a novel luminescent nanoparticles

Digital Luminescence Patterning via Inkjet Printing of a Photoacid Catalysed Organic-Inorganic Hybrid Formulation

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