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A series of biarylaminofluorene-based systems with donor-π-donor (D-π-D) structure have been designed and synthesized in order to study the dependence on the π-conjugated bridge length of the intervalence charge-transfer transitions (IV-CT) and of the electronic coupling between the redox centers. To this purpose cyclic voltammetry, UV/Vis-NIR, fluorescence spectroscopy and computational investigations have been carried out to characterize the electronic structure of the compounds in the neutral as well as in the mono- and dication states. Additionally, a study of related D-π compounds has been performed to elucidate the effect of the interaction between two redox centers. Interestingly it was observed that the mono- and dication species exhibit intense transition bands in the NIR region, in the 10000-15000 cm−1 range, whose intensity depends on the oxidation state and thus it can be reversibly tuned by an …
Publication date: 
1 Jun 2020

Agostina-Lina Capodilupo, Francesca Manni, Giuseppina Anna Corrente, Gianluca Accorsi, Eduardo Fabiano, Antonio Cardone, Roberto Giannuzzi, Amerigo Beneduci, Giuseppe Gigli

Biblio References: 
Volume: 177 Pages: 108325
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