Enrichment and Quantitative Determination of Free 3,5- Diiodothyronine, 3′,5′-Diiodothyronine, and 3,5-Diiodothyronamine in Human Serum of Thyroid Cancer by Covalent Organic Hyper Cross-linked Poly-ionic Liquid

•We developed a novel hyper-cross-linked poly ionic liquid material based on covalent organic reaction.•The material has specific enrichment for three main compounds in T2s family.•We applied this material in quantitative determination of T2s in serum of thyroid cancer patients.•3,5- diiodothyronine...

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