| 초록 |
When alkali metal anionic poly(9,9-bis(4-sulfonatobutyl)fluorene-co-alt-1,4-phenylene) (a-PFP) was used as electron injection layer, electron injection ability is increased leading to low of turn-on voltage, and higher brightness and efficiency. a-PFP could be also introduced in bio-sensors. An electrostatic complex of water-soluble conjugated polyelectrolytes (CPs) between sodium salt a-PFP and cationic poly(9,9-bis((6-N,N,N,-trimethylammonium)hexyl)fluorene-co-2,1,3-bezothiadiazole) dibromide (85:15) (c-PFB15) was tested as a fluorescence resonance energy transfer (FRET) donor to Texas Red (TR) labeled single-stranded DNA (ssDNA-TR) via two-step FRET processes. This detection scheme shows a FRET-induced signal amplification by adjusting the charge ratio in the cationic-/anionic CPs complex and controlling the number density of the binding CPs around the acceptor, resulting in enhanced antenna effects and sensitivity in CPs-based FRET DNA detection assays. |
