Triple-Peak Photoluminescence of DNA-Hybrid Alq3 Crystals Emitting a Depressed Single Peak upon Bio-Recognition

초록

The green organic semiconductor, tris-(8-hydroxyquinoline)aluminum(Alq(3)), was hybridized with DNA growing in the shape ofhexagonal prismatic crystals. In this study, we applied hydrodynamicflow to the fabrication of Alq(3) crystals doped with DNAmolecules. The hydrodynamic flow in the Taylor-Couette reactorinduced nanoscale pores in the Alq(3) crystals, especiallyat the side part of the particles. The particles exhibited distinctlydifferent photoluminescence emissions divided into three parts comparedto common Alq(3)-DNA hybrid crystals. We named this particlea "three-photonic-unit". After treatment with complementarytarget DNA, the three-photonic-unit Alq(3) particles dopedwith DNAs were found to emit depressed luminescence from side partsof the particles. This novel phenomenon would expand the technologicalvalue of these hybrid crystals with divided photoluminescence emissionstoward a wider range of bio-photonic applications.

키워드