Patent · US Active

Method of quenching singlet and triplet excited states of pigments, such as porphyrin compounds, particularly protoporphyrin IX, with conjugated fused tricyclic compounds have electron withdrawing groups, to reduce generation of reactive oxygen species, particularly singlet oxygen

US9867800B2 · kind B2 · utility

12Cited by
182References
33Claims
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Key dates

Filing dateDec 3, 2012
Grant dateJan 16, 2018
Priority date—
Expiry dateDec 3, 2032

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07C2603/24
  • WIPO fieldPharmaceuticals
  • WIPO sectorChemistry

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: and

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.