Figure 17From: Ferrocene in agriculture: from agrochemicals and soil remediation to selective chemosensorsSelective multichannel probes for Pb(II) cations; color changes associated with cation complexation (above, absorption, below, emission). Adapted from Ref. [57], J Org Chem 74:4787-4796, reprinted with permission. Copyright (2009) American Chemical Society.Back to article page