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Synonyms: 1′,3′-DIHYDRO-1′,3′,3′-TRIMETHYL-6-NITRO -SPIRO(2H-1BENZOPYRAN2,2′(2H)INDOLE)98%;1,3,3-Trimethylindolino-6-nitrobenzopyrylospirane;1,3,3-TRIMETHYLINDOLINO-6-NITROBENZOPYRYLOSPIRAN [PHOTOCHROMIC COMPOUND] 98+%;1,3,3-trimethyl-6′-nitroindole-2-spiro-2′-benzopyran;1,3,3-Trimethyl-6′-nitrospiro[1H-indole-2(3H),2′-[2H][1]benzopyran]
MF: C19H18N2O3 MW: 322.36
Product Categories: Organic Electronics and Photonics;Photochromic and Thermochromic Dyes;Functional Materials;Photochromic Compounds;Spiropyrans (Photochromic);Photonic and Optical Materials
| Melting point | 32°C |
| Boiling point | 460.98°C (rough estimate) |
| density | 1.2336 (rough estimate) |
| refractive index | 1.6140 (estimate) |
| storage temp. | Keep in dark place,Sealed in dry,Room Temperature |
| form | powder to crystal |
| pka | 2.41±0.40(Predicted) |
| color | Light yellow to Yellow to Green |
| λmax | 242 nm in ethanol |
| Purity | 98% |
| Product manager | Joy Wu; Email: Joy@coreychem.com |
1′,3′-Dihydro-1′,3′,3′-trimethyl-6-nitrospiro(2H-1-benzopyran-2,2′-(2H)-indole)(NitroBIPS) is a photochromic biocompatible spiropyran molecule that has six nitro groups positioned at the benzopyran section. It has a colourless leuco spiropyran form(SP) and coloured trans-merocyanine form(MC) that exhibits absorption peaks in the ultraviolet and visible regions respectively. NitroBIPS possesses a higher quantum yield in comparison to other spiropyran molecules and dissolves in a variety of solvents.
NitroBIPS is used as a photochromic dye which can be incorporated in poly(vinylalcohol)(PVA) by electro-spinning to form PVA-spiropyran nanofibres. It has photo-responsive behaviour that may be useful in optical data storage applications. It can be used to dope liquid crystal to develop a coloured scattering device that is dual responsive and allows the initiation of electrohydrodynamic instabilities(EHDI). Addition of NitroBIPS can modify the transparency from 100% to 16%, providing a shielding effect which can be used for smart window applications.
CONTACT/Email address: Joy@coreychem.com
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