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Most studies have primarily adopted interface\u2010dominant organic strategies to maintain ion doping, while relatively overlooking the intrinsic molecular\u2010level effects on ion implantation. From a molecular structure control perspective, the role of the polymer backbone remains poorly understood, resulting in an unclear correlation between ion dynamics and thin\u2010film microstructure. In this study, we present a molecular design strategy that enhances ion doping stability through polymer backbone regulation. This strategy induces a favorable thin\u2010film microstructure that promotes dense packing and enhanced crystallinity, enabling efficient ion implantation and transport. These structural characteristics have effectively emulated enhanced nonvolatile memory properties and biological synaptic operations, including long\u2010term potentiation and depression. Furthermore, high accuracy was achieved in artificial neural network (ANN) simulations using the MNIST dataset. 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