1217345-29-3Relevant academic research and scientific papers
Synthesis and photophysical properties of pyrene-based light-emitting monomers: Highly pure-blue-fluorescent, cruciform-shaped architectures
Hu, Jian-Yong,Era, Masanao,Elsegood, Mark R.J.,Yamato, Takehiko
experimental part, p. 72 - 79 (2010/03/26)
A new series of pyrene-based, pure-blue, fluorescent, stable monomers, namely 2,7-di-tert-butyl-4,5,9,10-tetrakis(p-R-phenylethynyl)pyrenes, have been successfully synthesised by Pd/Cu-catalysed Sonogashira coupling in excellent yield. The cruciform-shaped, π-conjugated structures were fully characterised by 1H/13C NMR and IR spectroscopy, mass spectrometry and elemental analysis. As revealed from single-crystal X-ray analysis, there is a herringbone pattern between stacked columns, but the π-π stacking distance of adjacent pyrene units was not especially short at about 5.82 A due to the introduction of the two bulky tBu groups in the pyrene rings at the 2-and 7-positions. The photophysical properties of these monomers were carefully examined in different organic solvents, and these data strongly indicate their promising application as blue-emitting materials in organic light-emitting diodes (OLEDs).
