環状三核金錯体の液晶性と発光挙動におよぼす枝分かれ側鎖の効果

抄録

Summary: Trinuclear gold (I) complexes (Figure 1) exhibit intense luminescence in crystals. Depending on the length of alkyl side-chain on the pyrazole ligands, the complexes showed different color of the luminescence and different liquid crystallinity. In this study, we discussed the relationship between their structure and photophysical/thermal properties. The melting points of complexes were lowered by introduction of branched side-chains, e.g., the complex with the longest branch, DTE6-Hex, showed the melting point at -15 °C and discotic nematic liquid-crystalline phase (ND) in extremely wide temperature range. (Figure 3) The gold complexes were found to exhibit strong phosphorescence at room temperature (Figure 4).