Cationic polymers have recently attracted attention due to their proven potential for nonviral gene delivery. In this study, we report novel biocompatible nanocomplexes produced using chemically functionalized N,N,N-trimethyl chitosan (TMC) with different N-acyl chain lengths (C 5 -C 18 ) associated with single-stranded oligonucleotides. The TMC derivatives were synthesized by covalent coupling reactions of qua...