A new quinoline-based chemosensor for Zn2+ ions and their application in living cell imaging

- The L1 was synthesized by a simple method with high yield.
- The Zn2+ detection limit (2 × 10−8 M) was reported.
- The reversible behavior of the receptor L1 toward Zn2+ was studied.
- The probe was applied successfully for recognizing intracellular Zn2+ within living cells.