In this work the synthesis of smart nanoparticles capable of respond to external stimulus (pH and temperature variations) is reported. To avoid post-polymerization modification, functionalized monomers able to respond to pH and temperature changes were and then polymerized. The synthesized monomers have the capability for coupling with folic acid which is the target molecule. For this reason their polymers can be used as targeted drug delivery systems. Smart polymeric nanoparticles were prepared by direct and inverse microemulsion polymerization of the synthesized monomers. The nanoparticles were charged with drugs and their release kinetic was studied.
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http://dx.doi.org/10.2741/e462 | DOI Listing |
J Chromatogr B Analyt Technol Biomed Life Sci
January 2025
Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun 130117 China. Electronic address:
This study aimed to develop molecularly imprinted polymer (MIP) nanoparticles specifically for the selective extraction and enrichment of progesterone (P) from royal jelly (RJ), and quantitatively analyzed them by ultra-performance-liquid chromatography electrospray ionization mass spectrometry (UPLC-ESI-MS). Gaussian software-based theoretical calculations identified methacrylic acid (MAA) as the optimal functional monomer for its strong binding affinity to P. MIP was synthesized by precipitation polymerization, and the preparation process of MIP was optimized by one-way variance design and response surface methodology.
View Article and Find Full Text PDFChemistry
January 2025
Brandeis University, Chemistry, 415 South Street,, Waltham, 02453, UNITED STATES OF AMERICA.
We designed and synthesized three diacetylene monomers M1-M3 having two NH2 groups. As anticipated, the NH2 groups aided the preorganization of these monomers by N-H…N hydrogen bonding. In the crystals of monomer M1 and M2, the intermolecular N-H…N hydrogen bonding preorganized the diyne units in an orientation suitable for their topochemical polymerization, but in the case of monomer M3, the distance was slightly larger than that recommended for the topochemical reaction.
View Article and Find Full Text PDFDiscov Nano
January 2025
Institute of Science, Department of Chemistry, Firat University, 23200, Elazığ, Turkey.
In this study, firstly chitin was reacted with chloracetyl chloride to synthesize the macroinitiator chitinchloroacetate (Ch.ClAc). Then, graft copolymers of methacrylamide (MAM), diacetone acrylamide (DAAM), N-(4-nitrophenyl)acrylamide (NPA), and 2-hydroxyethyl methacrylate (HEMA) monomers were synthesized by atom transfer radical polymerization (ATRP).
View Article and Find Full Text PDFLangmuir
January 2025
Department of Chemical Engineering, Tohoku University, Sendai, Miyagi 9808579, Japan.
Aqueous antibacterial colloids are potential agents that kill bacteria via physical contact. Conventionally, antibacterial agents are designed to be small, cationic, or hydrophobic. However, hydrophobic materials easily aggregate in aqueous media, drastically inhibiting their activity.
View Article and Find Full Text PDFJ Hazard Mater
January 2025
Department of Chemistry, National Institute of Technology Calicut, Kerala 673601, India. Electronic address:
Hydrazine (NH) and hydrogen sulfide (HS) are environmental contaminants that adversely affect human health. Fluorescence-based detection methods for these analytes utilize their nucleophilicity and reducing ability. Therefore, fluorescent sensors capable of detecting and distinguishing hydrazine and HS are highly beneficial.
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