Cyanide (CN-) is an extremely toxic anion, a little over 0.5 a gram has the ability to kill a 160 lbs human. Our goal is to use 3D metal complexes to sense cyanide using colorimetric techniques. Which could be more cost effective and environmentally friendly compared to similar organic sensors and techniques. Our research synthesized multiple Co(II)-bis-terpyridine complexes that can be used for the naked-eye detection of CN- in aqueous solution in 10-6 M level.[1] With proper ligand modification we have successfully attached the similar Co(II)-bis-terpyridine derivative on cellulose paper and microcrystalline cellulose (Figure 1).[2] This Cellulose-Co(II)-bis-terpyridine hybrid material can show colorimetric detection of micro molar level of aqueous cyanide solution. The papers show a visible color loss when added to a 10-5 aqueous KCN solution (Figure 1).[2] This surface modification approach to make the hybrid material is more useful toward application based sensor research.

Cellulose-Co(II)-bis-terpyridine hybrid colorimetric sensor for micromolar level aqueous cyanide

256th National Meeting (2018)

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