Alphabet-Inspired Design of (Hetero)Aromatic Push-Pull Chromophores.
Push-pull molecules represent a unique and fascinating class of organic π-conjugated materials. Herein, we provide a summary of their recent extraordinary design inspired by letters of the alphabet, especially focusing on H-, L-, T-, V-, X-, and Y-shaped molecules. Representative structures from each class were presented and their fundamental properties and prospective applications were discussed. In particular, emphasis is given to molecules recently prepared in our laboratory with T-, X-, and Y-shaped arrangements based on indan-1,3-dione, benzene, pyridine, pyrazine, imidazole, and triphenylamine. These push-pull molecules turned out to be very efficient charge-transfer chromophores with tunable properties suitable for second-order nonlinear optics, two-photon absorption, reversible pH-induced and photochromic switching, photocatalysis, and intercalation.
Institute of Organic Chemistry and Technology, Faculty of Chemical Technology University of Pardubice, Studentská 573, Pardubice, 53210, Czech Republic.
Milan
M
Klikar
Institute of Organic Chemistry and Technology, Faculty of Chemical Technology University of Pardubice, Studentská 573, Pardubice, 53210, Czech Republic.
Parmeshwar
P
Solanke
Institute of Organic Chemistry and Technology, Faculty of Chemical Technology University of Pardubice, Studentská 573, Pardubice, 53210, Czech Republic.
Jiří
J
Tydlitát
Institute of Organic Chemistry and Technology, Faculty of Chemical Technology University of Pardubice, Studentská 573, Pardubice, 53210, Czech Republic.
Filip
F
Bureš
chromophores; conjugation; donor-acceptor systems; photochemistry; structure-activity relationships