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Mass cytometry has emerged as a powerful platform for high-dimensional cellular analysis by enabling simultaneous detection of multiple elemental labels at single-cell resolution. However, the performance of this technology is fundamentally constrained by the efficiency, stability, and tunability of metal-chelating interfaces used for signal encoding. In this study, we introduce polymeric dipicolylamine (DPA) interfaces as a versatile material framework for high-resolution elemental signal mapping in cytometric technologies. By integrating dipicolylamine chelating motifs into polymeric backbones, these interfaces enable multivalent metal coordination, enhanced signal density, and improved elemental retention under cytometric operating conditions. The polymeric architecture allows precise control over chelator distribution, molecular flexibility, and metal loading capacity, thereby addressing key limitations associated with conventional small-molecule metal tags. We demonstrate that polymeric DPA systems facilitate robust coordination of lanthanide and transition metal ions, producing distinct and reproducible elemental signatures compatible with mass cytometric detection. Beyond signal amplification, the modular nature of the polymer scaffold supports functional adaptability for surface conjugation and biological interfacing. Collectively, this work establishes polymeric dipicolylamine interfaces as a scalable and tunable platform for next-generation cytometric reagents, offering new opportunities for multiplexed analysis, improved sensitivity, and expanded analytical resolution in elemental cytometry.