Crystal structures of a rhodamine derivative in its closed and open spirolactam ring forms were developed, which allows selective and sensitive detection of Cu ions at a micromolar range in neutral medium. The chemosensing properties of the probe through a pentacoordinate Cu ions were proven by spectroscopic and theoretical analysis. The spirolactam ring opening as the Cu selective sensor was applied to spinach () to estimate the accumulation of copper as copper(II) in the plant.
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| http://dx.doi.org/10.1021/acsomega.9b00053 | DOI Listing |
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