Kim, O.-K. Kim, J.K. Kim, D.Y. Kim, C.Y. 2024-01-21T14:15:10Z 2024-01-21T14:15:10Z 2021-09-02 2000-03 0032-3934 https://pubs.kist.re.kr/handle/201004/141560 Light emitting (LE) chromophores with three sequential segments centered by π-center (DTT) linked by D/D or D/A pair were synthesized. In the D-π-D (dye1) and D-π-A (dye2) pair, D/A and DTT functioned as hole and electron receptors as well as electron modulators respectively. Single-layer LE devices were fabricated as dye/PVK blends. Their photoluminescence and electroluminescence properties were studied. It was found that while the photoluminescence of dyes took place through energy transfer from PVK, the electroluminescence occurred by carrier-trapping onto the dye molecule. The electroluminescence was measured in the presence of PBD. Both dyes displayed similar I-V characteristics with dye2 being slightly more efficient. English ACS, Washington, DC, United States Molecularly tuned light-emitting chromophores with D-π-D and D-π-A sequences and DTT as π-center Article 1 American Chemical Society, Polymer Preprints, Division of Polymer Chemistry, v.41, no.1, pp.800 - 801 American Chemical Society, Polymer Preprints, Division of Polymer Chemistry 41 1 800 801 N scopus 2-s2.0-0033750919 Article Chromophores Current voltage characteristics Dyes Electroluminescence Electron traps Energy gap Light emitting diodes Optical materials Photoluminescence Polybutadienes Synthesis (chemical) Vinyl resins Amphotericity Electron modulators Light emitting chromophores Semiconducting polymers bipolar copolymers light emitting thiophene