335356-31-5Relevant articles and documents
1-alkyl-1H-imidazole-based dipolar organic compounds for dye-sensitized solar cells
Velusamy, Marappan,Hsu, Ying-Chan,Lin, Jiann T.,Chang, Che-Wei,Hsu, Chao-Ping
scheme or table, p. 87 - 96 (2010/04/23)
A series of donor-π-acceptor-type organic dyes based on 1-alkyllH-imidazole spacers 1-5 have been developed and characterized. The two electron donors are at positions 4 and 5 of the imidazole, while the electron-accepting cyanoacrylic acid is incorporated at position 2 by a spacer-containing heteroaromatic rings, such as thiophene and thiazole. Detailed investigation on the relationship between the structure, spectral and electrochemical properties, and performance of DSSC is described here. Dye-sensitized solar cells (DSSCs) using dyes as the sensitizers exhibit good efficiencies, ranging from 3.06 to 6.35%, which reached 42-87% with respect to that of N719-based device (7.33%) fabricated and measured under similar conditions. Timedependent density functional theory (TDDFT) calculations have been performed on the dyes, and the results show that both electron donors can contribute to electron injection upon photo-excitation, either directly or indirectly by internal conversion to the lowest excited state.
New class of imidazoles incorporated with thiophenevinyl conjugation pathway for robust nonlinear optical chromophores
Santos, Javier,Mintz, Eric A.,Zehnder, Oliver,Bosshard, Christian,Bu, Xiu R.,Günter, Peter
, p. 805 - 808 (2007/10/03)
A new series of thermally stable heterocyclic imidazole-based nonlinear optical chromophores has been developed. These chromophores possess a thiophene based stilbene conjugation pathway with a nitro acceptor group attached to the phenyl end. This feature leads to robust chromopores with high thermal stability and enhanced molecular nonlinearity.
