Role of acrylic acid in the synthesis of core-shell fluorine-containing polyacrylate latex with spherical and plum blossom-like morphology

2015 ◽  
Vol 132 (37) ◽  
pp. n/a-n/a
Author(s):  
Kunquan Li ◽  
Xingrong Zeng ◽  
Hongqiang Li ◽  
Xuejun Lai
Keyword(s):  
Acrylic Acid ◽  
Core Shell

The Role of the Initiator System in the Synthesis of Acidic Multifunctional Nanoparticles Designed for Molecular Imprinting of Proteins

2020 ◽  
Vol 65 (1) ◽  
pp. 28-41
Author(s):  
Marwa Aly Ahmed ◽  
Júlia Erdőssy ◽  
Viola Horváth
Keyword(s):  
Acrylic Acid ◽  
Binding Affinity ◽  
Molecular Imprinting ◽  
Low Temperatures ◽  
Ammonium Persulfate ◽  
Sodium Bisulfite ◽  
Multifunctional Nanoparticles ◽  
High Affinity ◽  
Initiator System

Multifunctional nanoparticles have been shown earlier to bind certain proteins with high affinity and the binding affinity could be enhanced by molecular imprinting of the target protein. In this work different initiator systems were used and compared during the synthesis of poly (N-isopropylacrylamide-co-acrylic acid-co-N-tert-butylacrylamide) nanoparticles with respect to their future applicability in molecular imprinting of lysozyme. The decomposition of ammonium persulfate initiator was initiated either thermally at 60 °C or by using redox activators, namely tetramethylethylenediamine or sodium bisulfite at low temperatures. Morphology differences in the resulting nanoparticles have been revealed using scanning electron microscopy and dynamic light scattering. During polymerization the conversion of each monomer was followed in time. Striking differences were demonstrated in the incorporation rate of acrylic acid between the tetramethylethylenediamine catalyzed initiation and the other systems. This led to a completely different nanoparticle microstructure the consequence of which was the distinctly lower lysozyme binding affinity. On the contrary, the use of sodium bisulfite activation resulted in similar nanoparticle structural homogeneity and protein binding affinity as the thermal initiation.

scholarly journals Effect of dopant concentration and the role of ZnS shell on optical properties of Sm3+ doped CdS quantum dots

RSC Advances ◽  
2021 ◽  
Vol 11 (14) ◽  
pp. 7961-7971
Author(s):  
N. D. Vinh ◽  
P. M. Tan ◽  
P. V. Do ◽  
S. Bharti ◽  
V. X. Hoa ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Dopant Concentration ◽  
Core Shell ◽  
Cds Quantum Dots ◽  
Cds Qds

The role of samarium (Sm) dopant on the structural, morphological, and optical properties of CdS QDs and CdS/ZnS core/shell QDs was methodically reported.

The role of the shell in core–shell-structured La-doped NaTaO3 photocatalysts

2021 ◽  
Vol 23 (14) ◽  
pp. 8868-8879
Author(s):  
Hanggara Sudrajat ◽  
Mitsunori Kitta ◽  
Ryota Ito ◽  
Tomoko Yoshida ◽  
Ryuzi Katoh ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Water Splitting ◽  
Core Shell ◽  
Surface Features ◽  
Relationship Of ◽  
La Doped

Unraveling the nanoarchitecture–photoactivity relationship of core–shell-structured La-doped NaTaO3 to tune the surface features, spatial distribution of dopants, and hence water splitting activity.

scholarly journals Point Defects in InGaN/GaN Core–Shell Nanorods: Role of the Regrowth Interface

Nano Express ◽  
2021 ◽  
Vol 2 (1) ◽  
pp. 014005 ◽  
Author(s):  
K Loeto ◽  
G Kusch ◽  
P-M Coulon ◽  
SM Fairclough ◽  
E Le Boulbar ◽  
...  
Keyword(s):  
Point Defects ◽  
Core Shell

Review of the Synthetic Chemistry Involved in the Production of Core/Shell Semiconductor Nanocrystals

2007 ◽  
Vol 60 (7) ◽  
pp. 457 ◽  
Author(s):  
Joel van Embden ◽  
Jacek Jasieniak ◽  
Daniel E. Gómez ◽  
Paul Mulvaney ◽  
Michael Giersig
Keyword(s):  
Semiconductor Nanocrystals ◽  
Critical Role ◽  
Charge Carriers ◽  
Core Shell ◽  
Synthetic Chemistry ◽  
Shell Material ◽  
Growth Processes ◽  
Passivating Layer ◽  
Spectral Shifts

Passivation of CdSe semiconductor nanocrystals can be achieved by overcoating the particles with a homogeneous shell of a second semiconductor. Shell layers are grown in monolayer steps to ensure homogeneous growth of the shell. The relative band edges of the two materials determine the photoreactiveity of the resultant core-shell nanocrystals. The critical role of ligands in minimizing nucleation of the shell material during the growth of the passivating layer is emphasized. The delocalization of charge carriers into the shell layers can be followed spectroscopically during the growth processes. The relative spectral shifts are directly correlated to the relative energies of the band edges.

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