doi:10.1021/acs.macromol.6b01112engOriol Langa, Luis TeodoroPiñol, MilagrosNogales, AConcellón, A.Blasco, E.Martínez-Felipe, A.Martínez, J. C.Šics, I.Ezquerra, T. A.Light-Responsive Self-Assembled Materials by Supramolecular Post-Functionalization via Hydrogen Bonding of Amphiphilic Block CopolymersART-2016-97007A new class of light-responsive supramolecular amphiphilic block copolymers (BCs) based on the association through multiple H-bonding between 4-isobutyloxyazobenzene motifs and 2, 6-diacylaminepyridine units is reported. Block copolymers containing 2, 6-diacylaminopyridine side units, as hydrophobic block, and poly(ethylene glycol), as a hydrophilic segment, were functionalized with either a carboxylic acid azodendron, via double H-bonding, or a thymine azobenzene, via triple H-bonding. The structural and thermal characterization of these supramolecular azo-copolymers in bulk and solution is presented. The work emphasizes the self-assembly of these supramolecular polymers in water and the study of their UV-light responsive properties by UV-vis spectroscopy, dynamic light scattering (DLS), transmission electron microscopy (TEM), and synchrotron small-angle X-ray (SAXS). The present noncovalent postpolymerization functionalization strategy has provided stable self-assemblies in water with light responsive properties that can be used to load and trigger the delivery of small fluorescent molecules.2016http://zaguan.unizar.es/record/13064110.1021/acs.macromol.6b01112http://zaguan.unizar.es/record/130641oai:zaguan.unizar.es:130641info:eu-repo/grantAgreement/ES/MINECO/MAT2014-55205-Pinfo:eu-repo/grantAgreement/ES/MINECO/MAT2014-59187-RMACROMOLECULES 49, 20 (2016), 7825-7836All rights reservedhttp://www.europeana.eu/rights/rr-f/info:eu-repo/semantics/openAccess