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A Novel Photoinduced Ligation Approach for Cross‐Linking Polymerization, Polymer Chain‐End Functionalization, and Surface Modification Using Benzoyl Azides
Author(s) -
Kocaarslan Azra,
Yılmaz Gorkem,
Topcu Gokhan,
Demirel Levent,
Yagcı Yusuf
Publication year - 2021
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.202100166
Subject(s) - surface modification , polymer chemistry , polymer , polymerization , materials science , end group , chain (unit) , chemistry , combinatorial chemistry , polymer science , organic chemistry , physics , astronomy
Various ligation processes have recently become a powerful tool in synthetic polymer chemistry. Herein, the use of a new photochemical ligation process as a versatile approach for the cross‐linking polymerization, functionalization of polymer chain ends, and surface modification of various materials such as silica and graphene oxide, is demonstrated. The process is based on the formation of urethane linkages by the reaction of photochemically in situ generated isocyanates from benzoyl azides with hydroxyl moieties in the presence of organobase, bicyclo[2.2.2]‐1,4‐diazaoctane (DABCO) under ambient conditions. The intermediates and obtained materials are characterized by NMR, FTIR, TGA, and TEM analyses. It is believed that this simple and efficient ligation process will expand future applications to fabricate complex macromolecular structures, biomaterials, and gels.