Highly emissive triphenylamine based fluorophores for detection of picric acid
Triphenylamine based, dumbbell shaped, highly fluorescent compound 1 was designed and synthesized. Compound 1 showed blue emission with quantum efficiency as high as 0.78 in benzene solution. Compound 1 showed turn-off sensitivity to picric acid, which is
Molecular engineering of largely π-extended metal-free sensitizers containing benzothiadiazole units: Approaching 10% efficiency dye-sensitized solar cells using iodine-based electrolytes
Based on the structural motif of a robust organic dye, new largely π-extended organic sensitizers for dye-sensitized solar cells (DSSCs) have been designed to optimize the interactions between the dye/TiO2 layer and the redox electrolyte. The m
Grisorio, Roberto,De Marco, Luisa,Giannuzzi, Roberto,Gigli, Giuseppe,Suranna, Gian Paolo
Preparation of Bis-di(hetero)aryl-(hetero)arylamines
The present invention relates to the preparation of certain bis-di(hetero)aryl-(hetero)arylamines via a process comprising at least two (hetero)aryl-(hetero)aryl coupling reactions. The target compounds are useful as building blocks for complex organic co
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(2014/10/29)
Synthesis and characterization of highly soluble two-photon-absorbing chromophores with multi-branched and dendritic architectures
A set of novel multi-polar compounds composed of four fluorene-based derivatives with systematic alteration of the molecular structure was synthesized and their nonlinear optical properties in the femtosecond and nanosecond time domain were examined. Preliminary experimental results show that the two-photon activities of the model compounds are connected to structural parameters, such as the number of peripheral electron-donating groups and/or the size of the π-domain in a dye molecule. It is also found that these model chromophores possess large nonlinear attenuation under the irradiation of laser pulses working at nanosecond regimes, indicating that these compounds may have strong two-photon-assisted excited-state absorption within the studied spectral region. Effective optical-power-limiting behaviors of the dendritic fluorophores were also demonstrated to show that such dye molecules can be potential materials for use as broadband and rapid-responsive optical limiters, especially against laser lights with longer pulses.