Guaiazulene-Based 2‑Hydrazinylpyridine Probe (GAHP550) for Ultralow, Reversible Cu2+ Detection and Molecular Logic Gate Applications
Mehmet Kaplan, Gabriele Kociok-Köhn, G. Dan Pantoş, Simon E. Lewis, Tony D. James · 2026
Read Guaiazulene-Based 2‑Hydrazinylpyridine Probe (GAHP550) for Ultralow, Reversible Cu2+ Detection and Molecular Logic Gate Applications by Mehmet Kaplan, Gabriele Kociok-Köhn, G. Dan Pantoş, Simon E. Lewis, Tony D. James (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13563978.txt.
Description
Mehmet Kaplan, Gabriele Kociok-Köhn, Dan Pantoş, Simon Lewis, and Tony James build a color changing probe for copper in water in this 2026 paper. Their molecule, GAHP550, grows from guaiazulene, a blue plant compound, in two steps with high yield and no column purification.
Copper ions flip the probe from green to brown at once, visible to the eye. It senses copper down to about fifty-five parts per billion, far under drinking water limits, and ignores a broad panel of rival ions. A common chelator resets it for reuse, and the pair of inputs even acts as a small logic gate. A phone app reads the color to give numbers on the spot, and tests on tap and bottled water recovered the added copper well.
Catalog record
| CREATOR | Mehmet Kaplan, Gabriele Kociok-Köhn, G. Dan Pantoş, Simon E. Lewis, Tony D. James |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 40 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |