Molecular engineering of metal-free organic sensitizers with polycyclic benzenoid hydrocarbon donor for DSSC applications: The effect of the conjugate mode

Efficient Access to Arylated Aza‐ullazines by Regioselective Functionalization of their Pyridine Ring by H−Li Exchange and Electrophilic Substitution

“…Ullazine is a unique planar nitrogen-containing polycyclic aromatic hydrocarbon (PAH) with 16 π-electron system, which holds great promise in organic functional materials such as polycyclic heteroaromatic arenes, [1,2] dye-sensitized solar cells [3][4][5][6][7] and organic field-effect transistors (OFET). [8][9][10] Ullazine has been first synthesized by Balli and Zeller in 1983.…”

Acenaphthylene-Based Chromophores for Dye-Sensitized Solar Cells: Synthesis, Spectroscopic Properties, and Theoretical Calculations

“…12,13 Polycyclic aromatic hydrocarbons (PAHs) encompass unique extended πconjugated and planar structures widely present in compounds for application in diverse fields as organic field-effect transistors (OFETs), 14 organic light-emitting diodes (OLEDs), 15,16 organic photovoltaics (OPVs), 17 and DSSCs. 18,19 Acenaphthylene is a PAH that has been widely used as a building block of several π-conjugated functional materials 17 such as bistriphenylamine fluoranthenes, 20 acenaphthopyrazines, 21 and acenaphthoBODIPYs. 22 Although having been employed in various materials, dyes containing an acenaphthylene as the main core have remained unexplored for the application on DSSCs when compared with other PAHs-based dyes such as biphenyl, 23,24 fluorene, 25,26 and anthracene.…”

“… As such, the dianchoring and dibranched groups of dyes, inspired by the architecture of the highly efficient ruthenium dyes, have emerged as a promising alternative (Figure ). , This multibranched architecture presents advantages over the monobranched one, such as a greater structural variety to achieve panchromatic response, superior optical density conferred by the extended π-conjugated system, and increased binding strength of the dye on the TiO 2 surface. , Polycyclic aromatic hydrocarbons (PAHs) encompass unique extended π-conjugated and planar structures widely present in compounds for application in diverse fields as organic field-effect transistors (OFETs), organic light-emitting diodes (OLEDs), , organic photovoltaics (OPVs), and DSSCs. , …”

“… 12 , 13 Polycyclic aromatic hydrocarbons (PAHs) encompass unique extended π-conjugated and planar structures widely present in compounds for application in diverse fields as organic field-effect transistors (OFETs), 14 organic light-emitting diodes (OLEDs), 15 , 16 organic photovoltaics (OPVs), 17 and DSSCs. 18 , 19 …”

Solvent effect on the efficiency of triphenylamine-based dye-sensitized solar cells, molecular approach

“…The sensitizer is an essential component that plays a primary role in the sunlight absorption and production of the electric charges and effects on the performance of the DSSC [15,16]. Metal-free organic photosensitizers, which usually have a donor-π spacer-acceptor (D-π-A) architecture, show good performance in DSSC [17]. As an example of these dyes, triphenylamine-based dyes is used as an electron donor in organic structures, due to strong electron-donating nature [18].…”