2,1,3-Benzoxadiazole and 2,1,3-benzothiadiazole-based fluorescent compounds: Synthesis, characterization and photophysical/electrochemical properties

Luminescent guest–host composite films based on an azomethine dye in different matrix polymers

“…The Stokes shift of the DPF in matrix polymers is lower than in the pure DPF film, but in a similar manner, results in a negligible overlap between the absorption and emission spectra in the case of PD and SD composites, preventing the re-absorption of the emitted light [29]. Thus, the lower Stokes value can be attributed to the energy lost by To investigate the performance of the obtained composites as materials in optoelectronic applications, their quantum yield (U F ) and chromaticity coordinates were measured using an integrating sphere.…”

A comprehensive study: Theoretical and experimental investigation of heteroatom and substituent effects on frontier orbitals and polymer solar cell performances

“…Synthetic pathway of monomers and polymers were given in Scheme 1 and Scheme 2, respectively. 4,7‐Dibromo‐5,6‐dimethoxybenzo[ c ][1,2,5]thiadiazole, 26 4,7‐dibromo‐5,6‐dimethoxybenzo[ c ][1,2,5]oxadiazole, 27 and 4,7‐dibromo‐5,6‐difluorobenzo[ c ][1,2,5]thiadiazole 28 were synthesized previously known synthetic pathways. NMR taken by Bruker Spectrospin Avance DPX‐400 Spectrometer where TMS was used as internal standard for structural identification of organic molecules.…”

New thiophene-based conjugated macrocycles for optoelectronic applications

“…166 nm) than for McT-1 (122 nm), possibly due to rotation of the BT units after excitation. [106][107][108] A larger Stokes shift has also been observed in a BT-containing [10]cycloparaphenylene (BT[10]CPP) compared to its parent [10]CPP. 109 To study the possible interactions between the macrocycles and fullerenes, fluorescence titration was performed with McT-1 and McT-2 in toluene solution, since fluorescence quenching can be indicative of intermolecular interactions.…”