The Reversible Electron Transfer Within Stimuli-Responsive Hydrochromic Supramolecular Material Containing Pyridinium Oxime and Hexacyanoferrate (II) Ions.

ABSTRACT: The structural and electronic features of the stimuli-responsive supramolecular inter-ionic charge-transfer material containing electron accepting N-benzylyridinium-4-oxime cation (BPA4⁺) and electron donating hexacyanoferrate (II) are reported. The study of reversible stimuli-induced transformation between hydrated reddish-brown (BPA4)₄[Fe(CN)₆]·10H₂O and anhydrous blue (BPA4)₄[Fe(CN)₆] revealed the origin of observed hydrochromic behavior. The comparison of the crystal structures of decahydrate and anhydrous phase showed that subsequent exclusion/inclusion of lattice water molecules induces structural relocation of one BPA4⁺ that alter the donor-to-acceptor charge-transfer states, resulting in chromotropi

SUBMITTER: Foretic B 

PROVIDER: S-EPMC11643671 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature