Single-component white-light-emitting Eu3+-metallopolymer for near-ultraviolet white light-emitting diode (n-UV-WLED)

Based on the quaternary copolymerization of the vinyl-functionalized monomers of a Schiff-base HVBMP (2-(((4-vinylphenyl)imino)methyl)phenol), its boride BF2-VBMP (2,2-difluoro-3-(4-vinylphenyl)-2H-2 lambda(4),3 lambda(4)-benzo [e] (Schubert and Kim, 2005; Shao et al., 2019; Wang et al., 2011) [1,3,2]oxazaborinine) and an organo-Eu3+-complex [Eu(TTA)(3)(4-VP-BPI)] (HTTA = 2-thenoyltrifluoroacetonate; 4-VB-PBI = 1-(4-vinylbenzyl)-2-(pyridin-2-yl)-H-1-benzo [d]imidazole)) with MMA (methyl methacrylate), a single-component white-light-emitting ((CIE coordinate (0.320, 0.341), CRI = 95, CCT = 6078 K and Phi = 4.31%; lambda(ex) = 380 nm) Eu3+-metallopolymer Poly[HVBMP-co-(BF2-VBMP)-co-Eu-co-MMA] (0.5:0.5:1:100) is obtained. Moreover, upon spin-coating of the Eu3+-metallopolymer onto a near-ultraviolet (n-UV) InGaN chip, the n-UV white light-emitting diode (n-UVWLED) characteristic of the high-quality white-light (CIE coordinate (0.337, 0.367), CRI = 83 and CCT = 5318 K) with the luminance of 2880 cd/m(2) at the applied voltage of 4 V, is successfully developed. This result shows that single-component Eu3+-metallopolymer capable of the BF2-chelation-assisted trichromatic white-light modulation, endows a promising opportunity to the potential n-UV-WLEDs.

Automated summary

Research has developed a single-component Eu3+-metallopolymer capable of emitting high-quality white light, which was successfully applied to near-ultraviolet white light-emitting diodes, demonstrating promising potential for future applications in the field.