Controllable Bulk Heterojunction Morphology by Self-Assembly of Oppositely Charged Nanoparticles

Singh, Kulveer; Jha, Prateek K.; Satapathi, Soumitra

doi:10.1021/acs.jpcc.7b06168

Cited by 3 publications

(4 citation statements)

References 35 publications

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“…The major driving forces for LbL assembly of NDDS include electrostatic force, hydrogen bonding, charge transfer interaction and covalent bonding. Recently, the works done by Prof. Soumitra Satapathi et al and Prof, Veera Sadhu et al, especially those related with nanoparticles, are very helpful for illustrating the different types and wide applications of LbL assembled NDDS (Kim et al, 2015;Singh et al, 2017;Paliwal et al, 2019;Sur et al, 2019).…”

Section: Formation Mechanism Of Lbl Assembled Nddsmentioning

confidence: 99%

“…Recently, the works done by Prof. Soumitra Satapathi et al. and Prof, Veera Sadhu et al., especially those related with nanoparticles, are very helpful for illustrating the different types and wide applications of LbL assembled NDDS (Kim et al., 2015 ; Singh et al., 2017 ; Paliwal et al., 2019 ; Sur et al., 2019 ).…”

Section: Formation Mechanism Of Lbl Assembled Nddsmentioning

confidence: 99%

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Layer-by-Layer assembled nano-drug delivery systems for cancer treatment

Zhang

Liang

2021

Drug Delivery

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Nano-drug delivery systems (NDDS) are functional drug-loaded nanocarriers widely applied in cancer therapy. Recently, layer-by-layer (LbL) assembled NDDS have been demonstrated as one of the most promising platforms in delivery of anticancer therapeutics. Here, a brief review of the LbL assembled NDDS for cancer treatment is presented. The fundamentals of the LbL assembled NDDS are first interpreted with an emphasis on the formation mechanisms. Afterwards, the tailored encapsulation of anticancer therapeutics in LbL assembled NDDS are summarized. The state-of-art targeted delivery of LbL assembled NDDS, with special attention to the elaborately control over the passive and active targeting delivery, are represented. Then the controlled release of LbL assembled NDDS with various stimulus responsiveness are systematically reviewed. Finally, conclusions and perspectives on further advancing the LbL assembled NDDS toward more powerful and versatile platforms for cancer therapy are discussed.

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Section: Formation Mechanism Of Lbl Assembled Nddsmentioning

confidence: 99%

Section: Formation Mechanism Of Lbl Assembled Nddsmentioning

confidence: 99%

Layer-by-Layer assembled nano-drug delivery systems for cancer treatment

Zhang

Liang

2021

Drug Delivery

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“…Organic-nanoparticle-based devices are the emerging technology for next-generation optoelectronic applications, especially in the field of organic solar cells. − Organic-nanoparticle-based device processing overcomes two major roadblocks for current state-of-the-art organic photovoltaic technology through its use of an environmentally benign aqueous solvent to replace the toxic haloarene solvents previously used for large-scale printing on flexible substrates ,− and its tunable morphology of the active layer materials at multiple length scales. ,, Organic nanoparticles are generally synthesized by the miniemulsion method . These nanoparticles are stabilized by ionic or neutral surfactants.…”

Section: Introductionmentioning

confidence: 99%

Origin of Low Open-Circuit Voltage in Surfactant-Stabilized Organic-Nanoparticle-Based Solar Cells

Gehan

Ellis

Venkataraman

et al. 2020

ACS Appl. Mater. Interfaces

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Organic-nanoparticle-based solar cells have drawn great attention due to their eco-friendly and environmentally friendly fabrication procedure. However, these surfactant-stabilized nanoparticles suffer open-circuit voltage loss due to charge trapping and poor extraction rate at the polymer cathode interface. Here, we have investigated the origin of voltage loss and charge trapping in surfactant-stabilized nanoparticle-based devices. Efficient organic photovoltaic (OPV) devices have been fabricated from an aqueous dispersion of poly(3-hexylthiophene-2,5-diyl) (P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) nanoparticles stabilized by anionic surfactants. AC impedance spectroscopy has been used to understand the charge transport properties in the dark and in operando conditions. We have demonstrated the similarities in the charge transport properties, as well as photocarrier dynamics of the nanoparticle-based OPVs and the bulk heterojunction OPVs despite fundamental differences in their nanostructure morphology. This study emphasizes the possibility of fabricating highly efficient OPVs from organic nanoparticles by reducing surface defects and excess doping of the polymers.

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“…But during the evolution to reach equilibrium, system passes through various non-equilibrium complex structures which are very different from equilibrium structures 34 . For instance, various studies have shown that system of oppositely charged nanoparticles are often trapped in non-equilibrium “gel”-like (percolated) structures at high packing fractions, and do not evolve to minimum energy crystalline structures due to slow system dynamics 35–37 . In one of our previous study, we have found that these kinetically trapped percolated structures formed by self-assembly of electron conducting and hole conducting polymer NPs are the bulk heterojunction morphologies for efficient organic solar cells 37 .…”

Section: Introductionmentioning

confidence: 99%

Effect of size and charge asymmetry on aggregation kinetics of oppositely charged nanoparticles

Singh

Raghav

Jha

et al. 2019

Sci Rep

Self Cite

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We report a theoretical and experimental study of the aggregation kinetics of oppositely charged nanoparticles. Kinetic Monte Carlo simulations are performed for symmetric, charge-asymmetric and size-asymmetric systems of oppositely charged nanoparticles. Simulation results show that both the weight and number average aggregate size kinetics exhibit power law scaling with different exponents for small and intermediate time of evolution. The qualitative behavior of the symmetric and the size asymmetric system are the same, but the charge asymmetric system shows anomalous behavior for intermediate to high particle concentrations. We also observe a strong dependence of power law exponents on the particle concentration. Radius of gyration of the cluster that indicates how nanoparticles inside a cluster are distributed around the center of mass of the cluster shows a non-monotonic time evolution with pronounced peak at higher particle concentration. The dependence of particle concentration on aggregation kinetics as observed by predictive numerical simulation is further verified experimentally by monitoring the time evolution of aggregate size of nanoparticles assemblies of Poly (methacrylic acid) (PMMA) nanoparticles functionalized with oppositely charged ligands. These size and charge tunable asymmetric polymeric nanoparticles were synthesized by modified miniemulsion technique. The integrated approach for studying nanoparticles aggregation as described here renders new insights into super structure formation and morphology optimization which can be potentially useful in the design of new materials, such as organic photovoltaics.

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Controllable Bulk Heterojunction Morphology by Self-Assembly of Oppositely Charged Nanoparticles

Cited by 3 publications

References 35 publications

Layer-by-Layer assembled nano-drug delivery systems for cancer treatment

Layer-by-Layer assembled nano-drug delivery systems for cancer treatment

Origin of Low Open-Circuit Voltage in Surfactant-Stabilized Organic-Nanoparticle-Based Solar Cells

Effect of size and charge asymmetry on aggregation kinetics of oppositely charged nanoparticles

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