Abstract: A new compound 4-[(trans-(2-pyridyl))styryl]-N,N-dibutylbenzenamine has been synthesized and characterized by elemental analysis, UV, and X-ray single-crystal diffraction studies. The compound crystallizes in the triclinic system with space group P-1， a=1.15041(3) nm, b=1.45746(4) nm, c=1.51598(4) nm, Z=4, V=2.33068(11) nm3, R1=0.0962, wR2=0.2630. The result showed that the molecule with donor, π-conjugated bridge and acceptor(D-π-A) structure has good planarity, which results in effective electronic delocalization and increased intramolecular charge transfer. The molecules are linked by intermolecular C—H…π. It is believed that π electrons play a significant role for their packing, which attributed it with higher Stock shifts in photoluminescence properties.

Key words: Pyridine, D-&, pi, -A, Opical properties, Planarity