Dendritic core derived unimolecular micelles with poly(lactic acid) arms: Synthesis and application as a phase transfer agent

Unimolecular micelles refer to amphiphilic hyperbranched molecules, which exhibit micellar characteristics in a single molecule. In the present study, starting with pentaerythritol, three new dendrimers D1, D2, and D3 were synthesized in good yields bearing 9, 12, and 18 peripheral hydroxyl groups,...

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Bibliographic Details
Published inPolymers for advanced technologies Vol. 33; no. 5; pp. 1512 - 1522
Main Authors Shikha, Jacob, Josemon
Format Journal Article
LanguageEnglish
Published Chichester, UK John Wiley & Sons, Ltd 01.05.2022
Wiley Subscription Services, Inc
Subjects
Alkynes
Bromophenol blue
click chemistry
Cycloaddition
Dendrimers
dye adsorption
Dyes
Hydroxyl groups
lactide
Micelles
NMR spectroscopy
Polylactic acid
Ring opening polymerization
Sequestering
star polymers
Structural integrity
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Summary:Unimolecular micelles refer to amphiphilic hyperbranched molecules, which exhibit micellar characteristics in a single molecule. In the present study, starting with pentaerythritol, three new dendrimers D1, D2, and D3 were synthesized in good yields bearing 9, 12, and 18 peripheral hydroxyl groups, respectively, using alkyne‐azide Husigen 1,3‐dipolar cycloaddition reaction. The structural integrity and purity of the dendrimers were confirmed by 1H and 13C NMR spectroscopy, and FE‐SEM studies established their near‐spherical morphology. Using D2 as a macroinitiator, hyperbranched 12‐arm star polymers were synthesized via ring‐opening polymerization of l‐lactide. The star polymer is found to be an efficient sequestering agent for water‐soluble dyes like congo red, bromophenol blue, and methyl orange from aqueous phase due to its amphiphilic nature demonstrating the application of unimolecular micelles in dye removal from aqueous waste.
ISSN:1042-7147
1099-1581
DOI:10.1002/pat.5617