- Synthesis and characterization of metal-incorporated aniline formaldehyde resin modified by amino acid for antimicrobial applications
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Advances in metal incorporated resins are now an active field of research. To develop resin having better antimicrobial and thermal activity, a series of metal-chelated resins have been synthesized by the condensation of (4-aminobenzene-1,3-diyl)dimethanol with 2,6-diaminohexanoic acid in alkaline medium and then this polymeric ligand further reacts with transition metal ions forming various coordination polymers. (4-Aminobenzene-1,3-diyl)dimethanol was initially prepared by the reaction of aniline and formaldehyde in 1 : 2 molar ratio in alkaline medium. The analytical data reveal that the polymer metal complexes of Mn(II), Co(II), and Ni(II) are coordinated with two water molecules, which are further supported by FTIR spectra and TGA data. Comparative analyses of the polymer metal complexes in thermal curves show better thermal stability than the polymeric ligand. Since these resins are relatively stable at high temperatures, they can be used for medical and biomaterial applications requiring thermal sterilization, solvent-resist coating materials because of their insoluble nature, and antifouling coating materials owing to antimicrobial activity in Eelds such as life-saving medical devices and the bottoms of ships.
- Nishat, Nahid,Rasool, Raza,Khan, Shamim Ahmad,Parveen, Shadma
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- Convergent synthesis of geometrically disassembling dendrimers using Cu(I)-catalyzed C-O bond formation
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The convergent synthesis of geometrically degradable dendrimers based on the 2,4-bis(hydroxymethyl)phenol subunit is presented. The key step of the synthetic scheme involves the CuI/3,4,7,8-tetramethyl-1,10-phenanthroline- catalyzed coupling of aryl iodides and alcohols. The synthesis and disassembly of these compounds is discussed.
- Polaske, Nathan W.,Szalai, Michael L.,Shanahan, Charles S.,McGrath, Dominic V.
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supporting information; experimental part
p. 4944 - 4947
(2010/12/25)
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- The azaquinone-methide elimination: Comparison study of 1,6- and 1,4-eliminations under physiological conditions
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The azaquinone-methide elimination is a powerful and efficient reaction useful for disassembly of spacers in prodrug systems. We and others have used the spacer-technique to develop dendritic and polymeric self-immolative molecular systems that can disass
- Erez, Rotem,Shabat, Doron
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supporting information; experimental part
p. 2669 - 2672
(2009/02/02)
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