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
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 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).
2018-8-17 · 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 which in turn are constituted from smaller aggregates (Clancy and Simon 1998).
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)
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).
The particle size is considered as a fundamental property of nanoparticles used for cargo delivery (CDS) purpose. The objective of this study was the particles size quantification of polydopamine nanoparticles (PDANS) via the near infrared spectroscopy (NIRS) combined with chemometrics tools. The successful synthesis of PDANS was proved using several characterization methods.
2020-8-6 · Polydopamine (PDA) has been found to be as functional materials in a wide range of applications. However the degradation behavior and mechanism of PDA are still in debate. For well understanding the degradation PDA nanoparticles (PDA NPs) were prepared by oxidation and self-polymerization of dopamine and employed to study the degradation properties.
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.
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
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.
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.
Herein we uncovered that polydopamine (PDA) nanoparticles with their structure and chemical properties similar to melanin a natural bio-polymer displayed a significant
2020-8-6 · Polydopamine (PDA) has been found to be as functional materials in a wide range of applications. However the degradation behavior and mechanism of PDA are still in debate. For well understanding the degradation PDA nanoparticles (PDA NPs) were prepared by oxidation and self-polymerization of dopamine and employed to study the degradation properties.
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
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
2020-11-29 · Polydopamine-coated Fe 3 O 4 (Fe 3 O 4 PDA) nanoparticles (NPs) were prepared as synergistic redox mediators for the catalytic reduction by NaBH 4 of azo dyes such as methyl orange (MO) and methyl red (MR).Transmission electron microscopy (TEM) Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) were applied to determine their
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(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
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
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
2020-4-21 · Polydopamine (PDA) is a bioinspired fascinating polymer which is considered nowadays as a material of choice for designing drug delivery nanosystems.
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).
2021-2-26 · Polydopamine (PDA) has attracted much attention recently due to its strong adhesion capability to most substrates. After combining with organic (such as organic metal framework micelles hydrogel polypeptide copolymer) or inorganic nanomaterials (such as gold silicon carbon) polydopamine-based nanoparticles (PDA NPs) exhibit the merging of characteristics.
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
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).
2015-3-23 · The decomposition of polydopamine nanoparticles to fluorescent PDs was confirmed using transmission electron microscopy and dark-field microscopy. The analysis of PDs by using laser desorption/ionization time-of-flight mass spectrometry revealed that the PDs consisted of dopamine 5 6-dihydroxyindole and trihydroxyindole units.
1 Composites Composed of Polydopamine Nanoparticles Graphene 2 Oxide and ε‑Poly‑L‑lysine for Removal of Waterborne Contaminants 3 and Eradication of Superbugs 4 Avijit Pramanik † Kaelin Gates † Ye Gao † Qinku Zhang † Fengxiang X. Han † Salma Begum † 5 Chris Rightsell ‡ Dhiraj Sardar ‡ and Paresh Chandra Ray † 6 †Department of Chemistry and Biochemistry Jackson
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 Nanoparticles as Efficient Scavengers for Reactive Oxygen Species in Periodontal Disease Antioxidative therapy has been considered an efficient strategy for the treatment of a series of excessive reactive oxygen species (ROS)-triggered diseases including oxidative-stress-induced periodontal disease.
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).
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).
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
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.
2021-6-1 · 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
2021-4-1 · Herein a series of reduced polydopamine nanoparticles (rPDA NPs) incorporated oxidized dextran/chitosan hybrid hydrogels have been designed for wound healing due to their excellent antioxidative property and antibacterial activity. The physicochemical properties as well as the antioxidative activities of the hydrogels were carefully characterized.
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
2021-2-26 · Polydopamine (PDA) has attracted much attention recently due to its strong adhesion capability to most substrates. After combining with organic (such as organic metal framework micelles hydrogel polypeptide copolymer) or inorganic nanomaterials (such as gold silicon carbon) polydopamine-based nanoparticles (PDA NPs) exhibit the merging of characteristics.
2015-3-23 · The decomposition of polydopamine nanoparticles to fluorescent PDs was confirmed using transmission electron microscopy and dark-field microscopy. The analysis of PDs by using laser desorption/ionization time-of-flight mass spectrometry revealed that the PDs consisted of dopamine 5 6-dihydroxyindole and trihydroxyindole units.
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.
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