TY - JOUR
T1 - Preparation of orthogonally-functionalized core Click cross-linked nanoparticles
AU - O'Reilly, Rachel K.
AU - Joralemon, Maisie J.
AU - Hawker, Craig J.
AU - Wooley, Karen L.
PY - 2007/1/22
Y1 - 2007/1/22
N2 - The preparation of well-defined core cross-linked polymeric nanoparticles is reported, utilizing multi-functional dendritic cross-linkers that allow for the effective stabilization of supramolecular polymer assemblies and the simultaneous introduction of reactive groups within the core domain. Amphiphilic diblock copolymers of poly(acrylic acid)-b-poly(styrene) (PAA-b-PS) that contained alkynyl functionality, partially incorporated throughout the hydrophobic PS block segment, were utilized as Click-readied precursors for the formation of polymer micelles. Divergently-grown dendrimers of the zero, first, second and third generations, having increasing numbers of azide terminating groups ((N3)2-[G-0], (N3)4-[G-1], (N3)8-[G-2], and (N3)16-[G-3], respectively), were investigated as cross-linkers via Click reactions with the polymer alkynyl groups to form covalent linkages throughout the micellar core domains, thus forming core cross-linked nanoparticles. All four generations of dendrimers were found to cross-link the micelle core effectively and afford robust nanostructures, whilst simultaneously introducing Click-readied functionalities throughout the hydrophobic domain, which are proposed to be readily available for further chemical modification.
AB - The preparation of well-defined core cross-linked polymeric nanoparticles is reported, utilizing multi-functional dendritic cross-linkers that allow for the effective stabilization of supramolecular polymer assemblies and the simultaneous introduction of reactive groups within the core domain. Amphiphilic diblock copolymers of poly(acrylic acid)-b-poly(styrene) (PAA-b-PS) that contained alkynyl functionality, partially incorporated throughout the hydrophobic PS block segment, were utilized as Click-readied precursors for the formation of polymer micelles. Divergently-grown dendrimers of the zero, first, second and third generations, having increasing numbers of azide terminating groups ((N3)2-[G-0], (N3)4-[G-1], (N3)8-[G-2], and (N3)16-[G-3], respectively), were investigated as cross-linkers via Click reactions with the polymer alkynyl groups to form covalent linkages throughout the micellar core domains, thus forming core cross-linked nanoparticles. All four generations of dendrimers were found to cross-link the micelle core effectively and afford robust nanostructures, whilst simultaneously introducing Click-readied functionalities throughout the hydrophobic domain, which are proposed to be readily available for further chemical modification.
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000246396600017&KeyUID=WOS:000246396600017
U2 - 10.1039/b616103k
DO - 10.1039/b616103k
M3 - Article
SN - 1144-0546
VL - 31
SP - 718
EP - 724
JO - New Journal of Chemistry
JF - New Journal of Chemistry
IS - 5
ER -