2021-3-12 · A facile one-pot sonochemical synthesis of Cu- Ag- and hybrid Cu/Ag-based polydopamine nanoparticles (Cu- Ag- and Cu/Ag-PDA-NPs) and the mechanisms by which they exert antibacterial and antibiofilm activities are reported. We showed that the nanoparticles are spherical with a core–shell structure. Whereas Cu is chelated to the shell of Cu-PDA-NPs in oxidation states of 1/ 2 the core of
2017-10-10 · This study reports the preparation of a series of gadolinium-polydopamine nanoparticles (GdPD-NPs) with tunable metal loadings. GdPD-NPs are analyzed by nuclear magnetic relaxation dispersion and with a 7-tesla (T) magnetic resonance imaging (MRI) scanner. A relaxivity of 75 and 10.3 mM −1 s −1 at 1.4 and 7 T is observed respectively.
2019-5-30 · Preparation and Characterization of PDA PMAA Nanoparticles. PDA sphere is prepared under basic condition via solution-oxidation method. The chemical coating of PDA sphere with a disulfide-crosslinked polymer layer was achieved through distillation-precipitation polymerization method that uses MAA and BAC as the monomer and crosslinker respectively (Fig. 1).
Herein we uncovered that polydopamine (PDA) nanoparticles with their structure and chemical properties similar to melanin a natural bio-polymer displayed a significant
2018-8-17 · Polydopamine Nanoparticles and Nanotubes With Templating Agents. When considering the size distribution of eumelanin grains in the skin it immediately appears that they are constituted from aggregates of uniform nanoparticles of 100–200 nm
Photoactive biohybrid soft nanoparticles are obtained by embedding the Rhodobacter sphaeroides Reaction Center (RC) in polydopamine (PDA) suspended aggregates and treating them with ethylenediamine (EDA). Such PDA EDA RC nanoparticles are investigated for photocurrent generation in photoelectrochemical cells which are able to convert sunlight into electrical energy.
2021-6-11 · Veisi H. Taheri S. Hemmati S. Preparation of polydopamine sulfamic acid-functionalized magnetic Fe 3 O 4 nanoparticles with a core/shell nanostructure as heterogeneous and recyclable
2018-10-1 · Bio-inspired polydopamine (PDA) based nanomaterials particularly nanoparticles (NPs) received tremendous attention and have been applied to various fields including drug delivery. Nonetheless bare PDA NPs will aggregate in physiological conditions and can be hardly applied for in vivo explorations.
2019-5-30 · Preparation and Characterization of PDA PMAA Nanoparticles. PDA sphere is prepared under basic condition via solution-oxidation method. The chemical coating of PDA sphere with a disulfide-crosslinked polymer layer was achieved through distillation-precipitation polymerization method that uses MAA and BAC as the monomer and crosslinker respectively (Fig. 1).
2021-3-12 · A facile one-pot sonochemical synthesis of Cu- Ag- and hybrid Cu/Ag-based polydopamine nanoparticles (Cu- Ag- and Cu/Ag-PDA-NPs) and the mechanisms by which they exert antibacterial and antibiofilm activities are reported. We showed that the nanoparticles are spherical with a core–shell structure. Whereas Cu is chelated to the shell of Cu-PDA-NPs in oxidation states of 1/ 2 the core of
Photoactive biohybrid soft nanoparticles are obtained by embedding the Rhodobacter sphaeroides Reaction Center (RC) in polydopamine (PDA) suspended aggregates and treating them with ethylenediamine (EDA). Such PDA EDA RC nanoparticles are investigated for photocurrent generation in photoelectrochemical cells which are able to convert sunlight into electrical energy.
Polydopamine can form biocompatible particles that convert light into heat. Recently a protocol has been optimized to synthesize polydopamine/protein hybrid nanoparticles that retain the biological function of proteins and combine it with the stimuli-induced heat generation of polydopamine. We have utilized this novel system to form polydopamine particles containing transferrin (PDA/Tf).
2018-8-1 · Synthesis of Polydopamine Nanoparticles for Drug Delivery ApplicationsVolume 24 Issue S1. Skip to main content Accessibility help We use cookies to distinguish you from other users and to provide you with a better experience on our websites.
2020-3-18 · Polydopamine (PDA)-coated gold nanoparticles (Au PDA) were used as electronic transport layer (ETL) modifiers in PTB7 PC71BM polymer solar cells. PDA can effectively modify the surface of gold nanoparticles (Au NPs) and improve the stability of them. In addition PDA also effectively binds to ZnO ETL reducing surface defect and improving the combination between the interface layer
Polydopamine(PDA) nanoparticles were prepared with ethanol and ammonia in water which performed an excellent light-heat energy conversion ability. An anti-cancer medicine doxorubicin(Dox) was loaded on the surface of the polydopamine nanoparticles efficiently through π-π stacking and covalent bond and then the doxorubicin loaded
2013-6-25 · Polydopamine prepared at an initial solution pH of 8.5 for 6 h was used to evaluate the cytotoxicity of drug-loaded nanoparticles. Either A549 cells or HeLa cells were seeded on 96-well plates at a density of 5 000 cells/well and supplied with DMEM containing 10 fetal bovine serum and 1 penicillin/streptomycin solution at 37 °C in a 5 CO
Polydopamine Nanoparticles Enhance Drug Release for Combined Photodynamic and Photothermal Therapy. Our study shows a facile two-step method which does not require the use of core templates to load a hydrophobic photosensitizer drug chlorin e6 (Ce6) within polydopamine (PDA) nanoparticles (NPs) while maintaining the intrinsic surface properties of
2016-4-29 · nanoparticles could serve as a versatile molecular loading platform for MR imaging guided combined chemo- photothermal therapy with minimal side effects showing great potential for cancer theranostics. Key words Polydopamine Indocyanine green Nano-Drug delivery system Combination therapy Magnetic resonance imaging. Introduction
2021-5-1 · In this paper we developed a novel electrochemiluminescence (ECL) sensing system based on polydopamine nanoparticles (PDA NPs) and MoS 2 nanosheet aerogel. PDA NPs with phenylboronic acid (PBA) were synthesized as a novel kind of organic nano-luminophores. The PDA-PBA NPs had high ECL efficiency and regulable emitting wavelength (552 610 nm).
2015-7-16 · Polydopamine nanoparticles (PDA NPs) which combine diagnostic and therapeutic functions are potentially useful in biomedicine. However it is difficult to synthesize PDA NPs of a relatively small size (≤50 nm in diameter) using the traditional polymerization of dopamine monomers in an alkaline water–ethanol solution at room temperature.
2020-8-18 · Polydopamine (PDA) nanoparticles are versatile structures that can be stabilized with proteins. In this study we have demonstrated the feasibility of developing PDA/polypeptides complexes in the shape of nanoparticles. The polypeptide can also render the nanoparticle functional. Herein we have developed antimicrobial nanoparticles with a narrow size distribution by decorating the
2021-6-1 · The polydopamine nanoparticles (PDA NPs) were prepared via a well-established method following previous report . Briefly ethanol (40 mL) and ammonia aqueous solution (NH 4 OH 28–30 3 mL) was added into deionized water (90 mL) with mild stirring at 30 °C for 30 min. DA aqueous solution (50 mg/ml 10 ml) was then injected into the above
Photoactive biohybrid soft nanoparticles are obtained by embedding the Rhodobacter sphaeroides Reaction Center (RC) in polydopamine (PDA) suspended aggregates and treating them with ethylenediamine (EDA). Such PDA EDA RC nanoparticles are investigated for photocurrent generation in photoelectrochemical cells which are able to convert sunlight into electrical energy.
2018-6-11 · Biosilica/polydopamine/silver nanoparticles composites new hybrid multifunctional heterostructures obtained by chemical modification of Thalassiosira weissflogii silica shells Volume 8 Issue 3 Danilo Vona (a1) Stefania Roberta Cicco (a2) Roberta Ragni (a1) Gabriella Leone (a1) (a3) Marco Lo Presti (a1) and Gianluca Maria Farinola (a1)
2018-8-17 · Polydopamine Nanoparticles and Nanotubes With Templating Agents. When considering the size distribution of eumelanin grains in the skin it immediately appears that they are constituted from aggregates of uniform nanoparticles of 100–200 nm
2013-6-25 · Polydopamine prepared at an initial solution pH of 8.5 for 6 h was used to evaluate the cytotoxicity of drug-loaded nanoparticles. Either A549 cells or HeLa cells were seeded on 96-well plates at a density of 5 000 cells/well and supplied with DMEM containing 10 fetal bovine serum and 1 penicillin/streptomycin solution at 37 °C in a 5 CO
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