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Noncovalent Supramolecular Diblock Copolymers: Synthesis and Microphase Separation

dc.contributor.authorBhaumik, Saibal
dc.contributor.authorNtetsikas, Konstantinos
dc.contributor.authorHadjichristidis, Nikos
dc.date.accessioned2020-07-23T07:05:05Z
dc.date.available2020-07-23T07:05:05Z
dc.date.issued2020-07-22
dc.date.submitted2019-11-05
dc.identifier.citationBhaumik, S., Ntetsikas, K., & Hadjichristidis, N. (2020). Noncovalent Supramolecular Diblock Copolymers: Synthesis and Microphase Separation. Macromolecules. doi:10.1021/acs.macromol.9b02326
dc.identifier.issn0024-9297
dc.identifier.issn1520-5835
dc.identifier.doi10.1021/acs.macromol.9b02326
dc.identifier.urihttp://hdl.handle.net/10754/664371
dc.description.abstractSupramolecular block copolymers (PS-DAT-sb-PI-Thy) were synthesized via noncovalent hydrogen bonding between well-defined thymine end-functionalized polyisoprene (PI-Thy) and diaminotriazine (DAT) end-functionalized polystyrene (PS-DAT). Three covalently linked block copolymers were also synthesized for comparison with the noncovalent supramolecular block copolymers. The complementary DAT/Thy interaction resulted in the microphase separation of the supramolecular block copolymer system. Detailed characterization of all functionalized homopolymers and block copolymers was carried out via proton nuclear magnetic resonance (1H NMR) spectroscopy, gel permeation chromatography, matrix-assisted laser desorption/ionizationtime of flight mass spectrometry, and differential scanning calorimetry. The self-assembly process of supramolecular block copolymers was evidenced by transmission electron microscopy. Small-angle X-ray scattering was also performed to study the microphase separation of supramolecular and covalently linked block copolymers. Comparison of microphase separation images of supramolecular block copolymers and the corresponding covalently linked analogues reveals differences in d-spacing and microdomain shape.
dc.description.sponsorshipThe research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST). The authors are grateful to Professors Edwin Thomas (Rice University, USA) and George Floudas (University of Ioannina, Greece) for the SAXS measurements and discussions, as well as to Dr. George Zapsas for assisting in recording the TEM images.
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttps://pubs.acs.org/doi/10.1021/acs.macromol.9b02326
dc.rightsThis is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
dc.rights.urihttp://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html
dc.titleNoncovalent Supramolecular Diblock Copolymers: Synthesis and Microphase Separation
dc.typeArticle
dc.contributor.departmentChemical Science Program
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentPolymer Synthesis Laboratory
dc.identifier.journalMacromolecules
dc.eprint.versionPublisher's Version/PDF
kaust.personBhaumik, Saibal
kaust.personNtetsikas, Konstantinos
kaust.personHadjichristidis, Nikos
dc.date.accepted2020-05-25
refterms.dateFOA2020-07-23T07:05:28Z
dc.date.published-online2020-07-22
dc.date.published-print2020-08-11


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