Preparation and spectral characterization of polymeric nanocapsules containing DR1 organic dye

Sharifimehr, Mohammad Reza; Ghanbari, Kh.; Ayoubi, Kazem; Mohajerani, Ezeddin

doi:10.1016/j.optmat.2015.02.036

Cited by 6 publications

(3 citation statements)

References 16 publications

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“…Among a variety of encapsulated dye nanostructures, polymeric nanocapsules have been widely applied due to their core–shell structure that offers material architecture-based diverse structures in delivering organic dyes. − Commonly, the nanocapsule shell acts as a diffusion barrier, while the capsule cavity core, defining the interior nanospace, has been applied to encapsulate dye molecules. For example, cyanine dye was loaded in poly( d , l -lactide) and polycaprolactone nanocapsules by the nanoprecipitation method and dispersed red 1 dye was encapsulated in poly(methyl methacrylate) nanocapsules using the phase separation method . Other structures of polymeric nanocapsules loaded by dye molecules can be obtained by electrostatic attractions between the polymeric material and the dye molecules by utilizing a layer-by-layer deposition method.…”

Section: Introductionmentioning

confidence: 99%

“…For example, cyanine dye was loaded in poly( d , l -lactide) and polycaprolactone nanocapsules by the nanoprecipitation method 11 and dispersed red 1 dye was encapsulated in poly(methyl methacrylate) nanocapsules using the phase separation method. 12 Other structures of polymeric nanocapsules loaded by dye molecules can be obtained by electrostatic attractions between the polymeric material and the dye molecules by utilizing a layer-by-layer deposition method. In these nanocapsule structures, either exterior or interior surfaces of the shell are used as the template and scaffold for the adsorbed dyes.…”

Section: Introductionmentioning

confidence: 99%

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Study of PEG-b-PLA/Eudragit S100 Blends on the Nanoencapsulation of Indigo Carmine Dye and Application in Controlled Release

Ashkenazi,

Matsanov,

Nassar-Marjiya

et al. 2024

ACS Omega

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A nanocapsule shell of poly(ethylene glycol)-block-poly(d,l-lactic acid) (PEG-b-PLA) mixed with anionic Eudragit S100 (90/10% w/w) was previously used to entrap and define the self-assembly of indigo carmine (IC) within the hydrophilic cavity core. In the present work, binary blends were prepared by solution mixing at different PEG-b-PLA/Eudragit S100 ratios (namely, 100/0, 90/10, 75/25, and 50/50% w/w) to elucidate the role of the capsule shell in tuning the encapsulation of the anionic dye (i.e., IC). The results showed that the higher content of Eudragit S100 in the blend decreases the miscibility of the two polymers due to weak intermolecular interactions between PEG-b-PLA and Eudragit S100. Moreover, with an increase in the amount of Eudragit S100, a higher thermal stability was observed related to the mobility restriction of PEG-b-PLA chains imposed by Eudragit S100. Formulations containing 10 and 25% Eudragit S100 exhibited an optimal interplay of properties between the negative surface charge and the miscibility of the polymer blend. Therefore, the anionic character of the encapsulating agent provides sufficient accumulation of IC molecules in the nanocapsule core, leading to dye aggregates following the self-assembly. At the same time, the blending of the two polymers tunes the IC release properties in the initial stage, achieving slow and controlled release. These findings give important insights into the rational design of polymeric nanosystems containing organic dyes for biomedical applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study of PEG-b-PLA/Eudragit S100 Blends on the Nanoencapsulation of Indigo Carmine Dye and Application in Controlled Release

Ashkenazi,

Matsanov,

Nassar-Marjiya

et al. 2024

ACS Omega

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show abstract

“…For many years antimicrobial drugs have been used to inhibit or kill microbes. − However, microbial resistance to these drugs has been reported recently, which reduces their effectiveness and causes severe public health problems . One of the most promising strategies for fighting against bacterial resistance is the use of smart nanomaterials, once they can release their active molecules in a slow and/or in a controlled manner. − These nanomaterials can be activated in specific conditions upon interaction with electromagnetic radiation, biomolecules, metallic and polymeric materials, as well as under pH change. − For example, nanogels can encapsulate several substances within their reservoirs and release it on demand at a later stage. − For that purpose, challenges need to be overcome to produce reliable and uniform nanogels whose properties can be altered by applying a remote stimulus, such as irradiation. , Nanogels loaded with metallic nanoparticles can be irradiated with specific wavelength, generating local electronic vibration, which leads to changes in the polymeric structure, releasing the nanoparticles to the surrounding environment. − …”

Section: Introductionmentioning

confidence: 99%

Controlled Release of Silver Nanoparticles Contained in Photoresponsive Nanogels

Ballesteros

Cancino-Bernardi

Corrêa

et al. 2019

ACS Appl. Bio Mater.

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Smart nanomaterials can selectively respond to a stimulus and consequently be activated in specific conditions, as a result of their interaction with electromagnetic radiation, biomolecules, or pH change. These nanomaterials are produced through distinct routes and can be used in artificial skin, drug delivery, and other biomedical applications. Here, we report on the fabrication of an antibacterial nanogel formed by aniline- and chitosan-containing silver nanoparticles (AgNp’s), with an average size of 78 ± 19 nm. The AgNp nanogel release was triggered by light at 405 nm. Specifically, the electronic energy vibration resulting from the interaction of the irradiation with the AgNp surface plasmon breaks the hydrogen bonds of the nanogels and releases AgNp’s. To understand the perturbation of AgNp-nanogels against bacteria, membrane model studies were performed using the main components of the cell membrane of Escherichia coli (E. coli), 1,2-dipalmitoyl-sn-glycero-3-phospho-(1′-rac-glycerol) (DPPG) and 1,2-dimyristoyl-sn-glycero-3-phosphoethanolamine (DMPE). DPPG has more influence on the incorporation of the nanoparticles on the cell membrane due to the electrostatic interaction between the nanoparticle surface and lipid charged groups. The results indicate new possibilities for designing smart antibacterial photoresponsive nanogels with enhanced optical and antibacterial properties to increase E. coli death.

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Study on the preparation of Pt nanocapsules

Zhang

Chen

et al. 2017

Int J Miner Metall Mater

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Preparation and spectral characterization of polymeric nanocapsules containing DR1 organic dye

Cited by 6 publications

References 16 publications

Study of PEG-b-PLA/Eudragit S100 Blends on the Nanoencapsulation of Indigo Carmine Dye and Application in Controlled Release

Study of PEG-b-PLA/Eudragit S100 Blends on the Nanoencapsulation of Indigo Carmine Dye and Application in Controlled Release

Controlled Release of Silver Nanoparticles Contained in Photoresponsive Nanogels

Study on the preparation of Pt nanocapsules

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