Huang, R. published the artcileSynthesis and performances of extended conjugated stilbene fluorescent dye, Application In Synthesis of 612-13-5, the publication is Pigment & Resin Technology (2017), 46(4), 1-14, database is CAplus.
The purpose of this research is to explore the optical performance of extended stilbene derivative Five steps were adopted to synthesize novel 4, 4′-bis(2-cyanostyryl) stilbene, which contained three vinyl units in the skeleton (S3E). The structure of S3E was characterized by 1H NMR and EI-MS. Its absorption and emission spectra were given as well. Compared to C.I. Fluorescent Brightener 199, which contains two vinyl units in the skeleton, S3E showed obvious bathochromic shifts in both UV-VIS and FL spectra. The maximum absorption wavelength and fluorescent wavelength were at 390 nm and 464 nm, resp., with Stoke’s shift of 74 nm. The absolute fluorescence quantum yield was 0.42. Thermogravimetric anal. revealed that the weight loss of S3E was less than 5% at 300°C. Moreover, the light resistance test showed that S3E in PVC plate can keep the good fluorescent intensity for more than 7 days exposed to xenon light. Therefore, it is believed that S3E could satisfy the requirements of coloring PVC as a fluorescent dye. S3E can be used as a candidate of fluorescent dye in the development of thermoplastics. The present work designed and synthesized a new derivative of stilbene, which could become a preferred colorant for thermoplastics.
Pigment & Resin Technology published new progress about 612-13-5. 612-13-5 belongs to nitriles-buliding-blocks, auxiliary class Organic Pigment, name is 2-(Chloromethyl)benzonitrile, and the molecular formula is C8H6ClN, Application In Synthesis of 612-13-5.
Referemce:
https://en.wikipedia.org/wiki/Nitrile,
Nitriles – Chemistry LibreTexts