Photochromic polymers and methods of synthesizing same

Details Photochromic polymers and methods of synthesizing same Photochromic polymers and methods of synthesizing same

2006-05-09

2006-05-09

Choi, Ling-Siu (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S346000, C526S169000, C526S171000, C526S286000

Reexamination Certificate

active

07041763

ABSTRACT:
Ring-opening metathesis polymerization (ROMP) of a photochromic 1,2-bis-(3-thienyl)-cyclopentene monomer generated a series of novel polymers. All polymers exhibit reversible light-activated interconversion between their colorless-open and their colored-closed forms.

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Nakashima et al. “Synthesis of Polystyrene and Poly(alkyl methacrylate)s having Photochromic Dithienylethene Pendant Groups”, Polymer Journal, 30(12),. 985-989 (Dec. 1998).
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Irie et al. “Photochromism of Diarylethenes having Thiophene oligomers as the Aryl Groups”, Tetrahedron, 53(36), 12263-12271 (Sep. 1997).

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