Eyewear including nitrophenyl functionalized boron pyrromethene dye for neutralizing laser threat
View Patent ↗The embodiments described herein generally relate to compositions and articles including dye compounds having desirable optical properties, and related methods. In some cases, the compositions and articles may possess advantageous optical properties, including various degrees of absorbance, emission, and/or transmission at particular wavelengths or ranges of wavelength. Embodiments described herein may be useful as optical filters in protective eyewear applications.
1. An article, comprising:
an optical filter including a substantially optically transparent polymer; and
a boron pyrromethene compound associated with the polymer, wherein the boron pyrromethene compound comprises a nitro group;
wherein the boron pyrromethene compound has the following structure,
wherein:
each R 1 -R 6 can be the same or different and each is hydrogen, halo, acyl, carboxyl, cyano, nitro, sulfonate, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, heterocyclyl, aryl, heteroaryl, any of which is optionally substituted; and any two of R 1 -R 6 can be joined to form a ring, optionally substituted;
X is N or CR 7 , wherein R 7 is hydrogen, halo, acyl, carboxyl, cyano, nitro, sulfonate, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, heterocyclyl, aryl, heteroaryl, any of which is optionally substituted; and
Y 1 and Y 2 can be the same or different and each is halo, acyl, carboxyl, cyano, nitro, sulfonate, any of which is optionally substituted; or Y 1 and Y 2 are joined to form a ring, optionally substituted.
2. An article as in claim 1 , wherein the boron pyrromethene compound is dispersed on or within the polymer or formed as a coating on the polymer.
3. An article as in claim 1 , wherein the boron pyrromethene compound has a maximum absorption peak between about 400 nm and about 800 nm.
4. An article as in claim 1 , wherein the boron pyrromethene compound has a maximum absorption peak at about 532 nm.
5. An article as in claim 1 , wherein R 7 is an aryl group substituted with at least one nitro group.
6. An article as in claim 5 , wherein Y 1 and Y 2 are each fluoro.
7. An article as in claim 1 , wherein the substantially optically transparent polymer is polycarbonate.
8. An article as in claim 1 , wherein the optical filter is included in eyewear.
9. An article as in claim 8 , wherein the eyewear includes a lens, goggle, eyeglasses, or visor.