US Patent No. 10,329,482

CLASS OF ORGANIC PHOSPHORS BASED ON DERIVATIVES OF BENZIMIDAZOXANTHENOISOQUINOLINONE FOR LED LIGHTING


Patent No. 10,329,482
Issue Date June 25, 2019
Title Class Of Organic Phosphors Based On Derivatives Of Benzimidazoxanthenoisoquinolinone For Led Lighting
Inventorship Johan Lub, Valkenswaard (NL)
Paulus Albertus Van Hal, Waalre (NL)
Rifat Ata Mustafa Hikmet, Eindhoven (NL)
Sylvain Loic Jean-Luc Hamon, Groningen (NL)
Assignee SIGNIFY HOLDING B.V., Eindhoven (NL)

Claim of US Patent No. 10,329,482

12. A luminescent material comprising at least an organic phosphor defined by formula IA and optionally also an organic phosphor defined by formula IB:wherein G1-G12 are independently selected from hydrogen, halogen, R1, OR1, NHR1, and NR2R1, wherein R1 and R2 are independently selected from C1-C18alkyl, C6-C24aryl, and C6-C24heteroaryl, and wherein when the organic phosphor defined by formula IB is available in the luminescent material, the phosphor defined by formula IB and the phosphor defined by formula IA have a molar ratio of 1B/1A ?0.1, and wherein one or more of G2 and G7 comprises independently a group selected from the group consisting of R1, OR1, NHR1, and NR2R1, and wherein at least four of G1-G12 for the organic phosphor IA independently are H, and wherein independently one or more of G2 and G7 for the organic phosphor IA comprise R1 or OR1, with R1 being defined by formula II;wherein D, E, I, L and M are independently selected from hydrogen, halogen, R3, OR3, NHR3, and NR4R3, and wherein R3 and R4 are independently selected from C1-C18alkyl, C6-C24aryl, and C6-C24heteroaryl,the luminescent material, comprising an organic phosphor selected from the group consisting of
6,16-diphenyl-8H-benzo[3,4]isochromeno[7,8,1-def]benzo[4,5]imidazo[1,2-b]isoquinolin-8-one;
6,16-diphenoxy-8H-benzo[3,4]isochromeno[7,8,1-def]benzo[4,5]imidazo[1,2-b]isoquinolin-8-one;
16-phenoxy-8H-benzo[3,4]isochromeno[7,8,1-def]benzo[4,5]imidazo[1,2-b]isoquinolin-8-one;
6,16-bis(4-(2,4,4-trimethylpentan-2-yl)phenoxy)-8H-benzo[3,4]isochromeno[7,8,1-def]benzo[4,5]imidazo[1,2-b]isoquinolin-8-one; and
16-(4-(2,4,4-trimethylpentan-2-yl)phenoxy)-8H-benzo[3,4]isochromeno[7,8,1-def]benzo[4,5]imidazo[1,2-b]isoquinolin-8-one.