Phototriggered Crosslinking and Surface Modification via Catalyst‐Free Functionalization of a New Orthogonal Agent Containing Nitrile N‐Oxide and o‐Nitrobenzyl Ether Moieties

Abstract

A new orthogonal agent containing phototriggered o‐nitrobenzyl (NB) ether and kinetically stabilized nitrile N‐oxide moieties are synthesized and applied to the reliable catalyst‐free functionalization of materials. This orthogonal reagent enables the modification of rubbers and glass surfaces containing unsaturated bonds through the catalyst‐free [2+3] cycloaddition reaction of nitrile N‐oxide to obtain photolabile NB ether‐functionalized materials. The resulting substrates having an NB ether are suitable to undergo photocontrollable reactions with electrophiles for generating various types of functional materials.

Alcohol Moiety-Tethering Acylazides as Versatile Isocyanate Precursors for Polymerization Initiators and Monomers

“…Orthogonal agents have been widely used in a range of polymer syntheses, as part of processes including surface and low-reactivity polymer species modification and adhesive material development. − An effective way to use orthogonal agents in polymer systems is in the synthesis of end-reactive polymers, which are regarded as well-defined building blocks of polymeric architectures. In conventional syntheses, end-reactive polymers are prepared by introducing reactive groups via reactions such as the Huisgen reaction or thiol–ene reaction, before or after a certain living polymerization to synthesize well-defined polymers. − This approach involves an increased number of synthetic steps to prepare the target end-reactive polymers, and ideally, it should be achieved via processes that are not synthetically demanding.…”