June 1, 2025

P‐215: Novel Design Strategy of Multiple‐Resonance‐Type Blue Fluorescent Dopants with High Efficiency and High Color Purity

Key Points

The BD‐2 dopant achieved CIE coordinates of (0.134,0.087), showcasing its color purity traits.
Synthesis involved introducing a benzo[b]thiophene substituent to lower triplet energy and reduce intermolecular interactions.
Control over wavelength and molecular distance was achieved through bulky donating groups to improve device performance.
These findings highlight the potential for improved fluorophore designs in display and lighting technology applications.

Abstract

Deep blue boron based multiple resonance (MR) type fluorescent materials, BD‐1 and BD‐2 were synthesized and evaluated. Benzobthiophene substituent which has low triplet energy was introduced to lower triplet energy to suppress the intermolecular interactions. Furthermore, bulky donating group was introduced to control the wavelength, color purity, and to increase molecular distance. As a result, BD‐2 based fluorescent device showed CIE coordinates of (0.134,0.087) and EQ Emax of 7.9%.

P‐215: Novel Design Strategy of Multiple‐Resonance‐Type Blue Fluorescent Dopants with High Efficiency and High Color Purity

Key Points

Abstract

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