Patent number: 9867800
Abstract: A method of quenching excited state energy from a pigment that has been excited by absorption of light having a wavelength in the wavelength range of 290-800 nm, comprising reacting a pigment with a conjugated fused tricyclic compound having electron withdrawing groups: of Formula (II) or a salt thereof: wherein: A is selected from the group consisting of O, S, C?O, C?S, and B1, B2, D1, and D2 are each independently selected from the group consisting of F, Cl, Br, I, CF3, CCl3, NR33+, NO2, CN, C(?O)R4, C(?O)OR1, SO2R5, aryl, and —C?CHR6; each m independently is 0, 1, 2, 3, or 4; n is 0 or 1; each R1 is independently selected from the group consisting of H, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, and aryl; R2 is selected from the group consisting of H, alkyl, cycloalkyl, alkenyl, alkynyl, and aryl; each R3 is independently selected from the group consisting of H and C1-C6 alkyl; each R4 is independently selected from the group consisting of H, alkyl, alkenyl, alkynyl, cyc
Type:
Grant
Filed:
December 3, 2012
Date of Patent:
January 16, 2018
Assignee:
Hallstar Innovations Corp.
Inventors:
Craig A. Bonda, Shengkui Hu
Publication number: 20150164852
Abstract: A method of quenching excited state energy from a pigment that has been excited by absorption of light having a wavelength in the wavelength range of 290-800 nm, comprising reacting a pigment with a conjugated fused tricyclic compound having electron withdrawing groups: of Formula (II) or a salt thereof: wherein: A is selected from the group consisting of O, S, C?O, C?S, and B1, B2, D1, and D2 are each independently selected from the group consisting of F, Cl, Br, I, CF3, CCl3, NR33+, NO2, CN, C(?O)R4, C(?O)OR1, SO2R5, aryl, and —C?CHR6; each m independently is 0, 1, 2, 3, or 4; n is 0 or 1; each R1 is independently selected from the group consisting of H, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, and aryl; R2 is selected from the group consisting of H, alkyl, cycloalkyl, alkenyl, alkynyl, and aryl; each R3 is independently selected from the group consisting of H and C1-C6 alkyl; each R4 is independently selected from the group consisting of H, alkyl, alkenyl, alkynyl, cycl
Type:
Application
Filed:
December 3, 2012
Publication date:
June 18, 2015
Applicant:
HALLSTAR INNOVATIONS CORP.
Inventors:
Craig A. Bonda, Shengkui Hu