In conventional ferroelectrics the polarization is induced either by the relative displacement
of positive and negative ions due to a lattice distortion or by the collective alignment of …

The π-electronic functionalities of molecular donor (D)–acceptor (A) compounds have been
attracting subjects for the solid state science as well as for the prospective technological …

Neutral–ionic (NI) phase transition is a reversible switching of organic charge-transfer
complexes between distinct valence states by external stimuli. This phase transformation in …

Organic charge-transfer (CT) crystals constitute an important class of functional materials,
characterized by the directional charge-transfer interaction between π-electron Donor (D) …

Molecular displacement in an alternating chain of donors and acceptors triggers ferroelectric
switching of large electric polarization with a low electric field in some charge-transfer …

We report on high correlation and ordering of multi-electron transfer at neutral-ionic
transformation in quasi–one-dimensional prototype crystal of tetrathiafulvalene-chloranil …

In order to determine the optimal methodology for evaluation of the magnitude of
intermolecular charge transfer, several methods have been examined: Mulliken population …

Mixed-stacked organic molecular compounds near the neutral–ionic phase boundary,
represented by tetrathiafulvalene-p-chloranil (TTF-CA), show a unique phase transition from …

Short-range ferroelectric order is postulated to explain unusual one-dimensional dielectric
response in ferroelectric 1, 4-diazabicyclo [2.2. 2] octane. In this pure organic salt, the polar …

Although the Neutral-Ionic transition in mixed stack charge-transfer crystals was discovered
almost forty years ago, many features of this intriguing phase transition, as well as open …