867248-85-9Relevant articles and documents
Facile synthesis of novel monodisperse linear 3,9-linked oligocarbazoles
Xu, Tinghua,Lu, Ran,Jin, Ming,Qiu, Xianping,Xue, Pengchong,Bao, Chunyan,Zhao, Yingying
, p. 6883 - 6886 (2007/10/03)
Novel monodisperse linear 3,9-linked oligocarbazoles (OCAs) were prepared stepwise using Ullmann coupling reaction in seal-tubes. The resulting OCAs were soluble in common organic solvents. The UV-vis spectra of OCAs exhibited small red shift and their intensities increased linearly with the increase of the carbazole moieties, suggesting that no intramolecular π-interactions appeared at ≤8-mer. All the OCAs gave strong fluorescence and it was found that the conjugated degree of linear OCAs would be saturated when the number of carbazole units reaches four.