Selective and Reusable Iron(II)-Based Molecular Sensor
for the Vapor-Phase Detection of Alcohols
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Abstract
A mononuclear
iron(II) neutral complex (<b>1</b>) is screened for sensing
abilities for a wide spectrum of chemicals and to evaluate the response
function toward physical perturbation like temperature and mechanical
stress. Interestingly, <b>1</b> precisely detects methanol among
an alcohol series. The sensing process is visually detectable, fatigue-resistant,
highly selective, and reusable. The sensing ability is attributed
to molecular sieving and subsequent spin-state change of iron centers,
after a crystal-to-crystal transformation