Spiropyrans [Photochromic Dyes]

Spiropyrans [Photochromic Dyes] — includes spiro compounds that combine an indoline ring with a naphthoxazine, naphthopyrylospiran, or benzopyrylospiran group, so that their structure can change reversibly between the closed spiro form and the open merocyanine form upon ultraviolet irradiation. This structural switching is the basis of the photochromic property of this class of compounds.

Spiropyrans are widely used by materials and optics researchers to develop photochromic dyes, optical sensors, and light-based data storage systems because of their reversible and directly observable color change. These compounds also serve as a model for studying the kinetics of spiro-merocyanine isomerization in physical organic chemistry.

Examples of products in this collection: TCI T1259 27333-47-7 1,3,3-Trimethylindolinonaphthospirooxazine, TCI D5626 1498-89-1 1',3'-Dihydro-8-methoxy-1',3',3'-trimethyl-6-nitrospiro[2H-1-benzopyran-2,2'-[2H]indole], TCI T0423 1592-43-4 1,3,3-Trimethylindolino-beta-naphthopyrylospiran, TCI H1042 16111-07-2 1-(2-Hydroxyethyl)-3,3-dimethylindolino-6'-nitrobenzopyrylospiran, TCI T0416 13433-31-3 1,3,3-Trimethylindolino-8'-methoxybenzopyrylospiran, TCI T0344 1485-92-3 1,3,3-Trimethylindolinobenzopyrylospiran, TCI T0370 16650-14-9 1,3,3-Trimethylindolino-6'-bromobenzopyrylospiran, TCI T0366 1498-88-0 1,3,3-Trimethylindolino-6'-nitrobenzopyrylospiran.

Pay attention to the position of substituents on the naphthopyran or benzopyran ring (such as bromo, nitro, or methoxy groups), as they affect the activation wavelength and the stability of the open form required. All products are genuine Tokyo Chemical Industry (TCI) Japan products, with purity, packaging, and storage conditions listed on each item's page.

Other categories at the same level under Photochromic Dyes, often used together in one laboratory workflow:

Back to Photochromic Dyes. For large-volume procurement, special packaging, or specific grades, contact the AMI Scientific team — official distributor of TCI Japan in Indonesia — to check availability and lead time directly from Japan.

8 products