Clickable Nucleic Acids: Sequence‐Controlled Periodic Copolymer/Oligomer Synthesis by Orthogonal Thiol‐X Reactions

Publisher: John Wiley & Sons Inc

E-ISSN: 1521-3757|127|48|14670-14675

ISSN: 0044-8249

Source: ANGEWANDTE CHEMIE, Vol.127, Iss.48, 2015-11, pp. : 14670-14675

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

Previous Menu Next

Abstract

AbstractSynthetic polymer approaches generally lack the ability to control the primary sequence, with sequence control referred to as the holy grail. Two click chemistry reactions were now combined to form nucleobase‐containing sequence‐controlled polymers in simple polymerization reactions. Two distinct approaches are used to form these click nucleic acid (CNA) polymers. These approaches employ thiol–ene and thiol‐Michael reactions to form homopolymers of a single nucleobase (e.g., poly(A)n) or homopolymers of specific repeating nucleobase sequences (e.g., poly(ATC)n). Furthermore, the incorporation of monofunctional thiol‐terminated polymers into the polymerization system enables the preparation of multiblock copolymers in a single reaction vessel; the length of the diblock copolymer can be tuned by the stoichiometric ratio and/or the monomer functionality. These polymers are also used for organogel formation where complementary CNA‐based polymers form reversible crosslinks.