Kim, DY Kim, JK Cho, HN Kim, CY 2024-01-21T15:32:37Z 2024-01-21T15:32:37Z 2021-09-04 1999-06 0379-6779 https://pubs.kist.re.kr/handle/201004/142172 Light-emissive statistical copolymers were synthesized between 9,9'-dihexylfluorene and a mixture of meta- and para-divinylenephenylene by the Heck reaction. The copolymers were soluble in organic solvents and thermally stable. The absorption spectra of copolymers showed two peaks at 382 and 410 nm revealing the existence of both the alternating copolymers with the meta- and para-linkaged. However, the photoluminescence spectra showed the single emission peak at 482 nm of the lower energy state due to the electronic energy transfer. The highest PL quantum efficiency was observed from the copolymer with 30% of the para-linkaged. Light-emitting diodes of the copolymers and their blends sandwiched between aluminum and ITO coated glass emitted blue-light with the highest quantum efficiency of 0.1%. English ELSEVIER SCIENCE SA Fluorene-based statistical copolymers Article 10.1016/S0379-6779(98)01353-8 1 SYNTHETIC METALS, v.102, no.1-3, pp.1243 - 1244 SYNTHETIC METALS 102 1-3 1243 1244 N scie scopus 000081056400183 2-s2.0-0033137807 Materials Science, Multidisciplinary Physics, Condensed Matter Polymer Science Materials Science Physics Polymer Science Article; Proceedings Paper CONJUGATED POLYMERS LIGHT BLUE light-emissive polymer electroluminescence time-resolved fast spectroscopy energy transfer