4.2.2 Preparation of THB (4-(2-(5-(4-(diphenylamino)phenyl)thiophen-2-yl)vinyl)-1-(2-hydroxyethyl) pyridin-1-ium bromide)
THB of AIE properity was produced by simple organic reactions. The 5-(4-(diphenylamino)phenyl)thiophene-2-carbaldehyde was generated by Suzuki–Miyaura coupling reaction of 4-bromo-N,N-diphenylaniline with (5-formylthiophen-2-yl)boronic acid, and then a condensation reaction with 1-(2-hydroxyethyl)-4-methylpyridin-1-ium bromide was underwent to give THB with a total yield of 69%.