Enhancing the electroluminescence performances of novel platinum(ii) polymetallayne-based phosphorescent polymers through employing functionalized Ir^III phosphorescent units and facilitating triplet energy transfer

Abstract

Novel phosphorescent polymers are developed with platinum(ii) polymetallayne-based backbones bearing functionalized IrIII phosphorescent units to promote highly efficient triplet state energy-transfer and achieve high EL performances.

Synthesis of 2,2′-biimidazole-based platinum(ii) polymetallaynes and tuning their fluorescent response behaviors to Cu2+ ions through optimizing the configuration of the organic spacers and steric effect

“…18 The novel skeletons of polymetallaynes provides a good scope for coupling the chemical, electronic and optical properties of metal complexes to those of the organic component, thus accessing novel polymers with new functional properties, such as optical power limiting, 19 electroluminescence, 20 and photovoltaic behavior 21 etc. 18 The novel skeletons of polymetallaynes provides a good scope for coupling the chemical, electronic and optical properties of metal complexes to those of the organic component, thus accessing novel polymers with new functional properties, such as optical power limiting, 19 electroluminescence, 20 and photovoltaic behavior 21 etc.…”

Facilitating triplet energy-transfer in polymetallayne-based phosphorescent polymers with iridium(III) units and the great potential in achieving high electroluminescent performances

“…Meanwhile, the conjugation of the backbones of platinum(II) polymetallaynes can be maintained to benefit charge carrier injection/transporting. Hence, platinum(II) polymetallaynes should show great potential to overcome the drawbacks associated with the traditional conjugated phosphorescent polymers, which has been shown by our recent preliminary results [14,15]. The concerned novel phosphorescent copolymers with platinum(II) polymetallayne backbone can show high EL performance with current efficiency (h L ) of 11.49 cd A À1 [15], indicating the great potential of these novel phosphorescent polymers in the field of OLEDs.…”

Platinum(ii) polymetallayne-based phosphorescent polymers with enhanced triplet energy-transfer: synthesis, photophysical, electrochemistry, and electrophosphorescent investigation

“…The methods of OLED fabrication and measurements are similar to those of our previous study. 30 The pre-cleaned ITO glass substrates were treated with ozone for 20 min. Then, the PEDOT:PSS was deposited on the surface of the ITO glass by a spin-coating method to form a 45 nm-thick hole-injection layer.…”

“…Hence, platinum(II) polymetallaynes should show great potential to overcome the drawbacks associated with the traditional conjugated phosphorescent polymers, which has been shown by our recent preliminary results. 30 The concerned novel phosphorescent polymers with platinum(II) polymetallayne backbone can show high EL performance with a current efficiency (h L ) of 9.17 cd A À1 . 30 It is well accepted that the energy-transfer from the polymer backbones to the phosphorescent units can play a critical role in determining the EL performances of the concerned phosphorescent polymers.…”

“…30 The concerned novel phosphorescent polymers with platinum(II) polymetallayne backbone can show high EL performance with a current efficiency (h L ) of 9.17 cd A À1 . 30 It is well accepted that the energy-transfer from the polymer backbones to the phosphorescent units can play a critical role in determining the EL performances of the concerned phosphorescent polymers. Thus, optimizing the energy-transfer processes aforementioned in this novel kind of phosphorescent polymer should be of great importance in obtaining the structure-property relationship information to provide valuable clues for the design and synthesis of new high-performance phosphorescent polymers.…”