Kim, YC Lee, TW Cho, HN Hong, JM Kim, CY 2024-01-21T12:37:47Z 2024-01-21T12:37:47Z 2021-09-05 2001-03-15 0379-6779 https://pubs.kist.re.kr/handle/201004/140612 Efficient energy transfer and lasing characteristics of the blends comprising fluorene-based liquid crystalline and non-liquid crystalline photoluminescent polymers with different band gap energies were studied. Time-correlated single photon counting study showed an efficient Forster-type energy transfer from the liquid crystalline donor to the non-liquid crystalline acceptor. A liquid crystalline blend with 2.0 wt-% of the acceptor gave a light emission whose intensity was 13 times stronger than that of each component. Also, photo-pumped laser action from the waveguide device fabricated with the blend was observed with the very low threshold pump energy of 1 nJ/pulse. English ELSEVIER SCIENCE SA STATE LASER MATERIALS SEMICONDUCTING POLYMERS Low threshold lasing from fluorene-based copolymer blends with liquid crystallinity Article 10.1016/S0379-6779(00)00654-8 1 SYNTHETIC METALS, v.121, no.1-3, pp.1753 - 1754 SYNTHETIC METALS 121 1-3 1753 1754 scie scopus 000168831200309 2-s2.0-0035867476 Materials Science, Multidisciplinary Physics, Condensed Matter Polymer Science Materials Science Physics Polymer Science Article; Proceedings Paper STATE LASER MATERIALS SEMICONDUCTING POLYMERS fluorene lasing energy transfer liquid crystallinity