Screening of a model for the distribution of dye in dye-encapsulated silica through the gradual etching of the outermost silica layer using hydrofluoric acid was written by Wi, Rinbok;Lee, Kyoung G.;Yoon, Sun Hong;Lee, Sang Geun;Imran, Muhammad;Kim, Do Hyun. And the article was included in Journal of Nanoscience and Nanotechnology in 2011.Synthetic Route of C26H26N2O2S This article mentions the following:
Monodispersed spherical silica particles emitting blue light were prepared by incorporating 2,5-bis(5-tert-butyl-2-benzoxazolyl)thiophene (BBOT) into a silica matrix. The morphol. and photoluminescent properties were studied to confirm the proper incorporation of BBOT into the silica matrix, using an electron microscope and a fluorescence spectrometer. Four possible models representing the distribution of the dye mols. in a dye-encapsulated silica particle were proposed. To analyze the distribution of the BBOT dye in the BBOT-encapsulated silica, the fluorescent emission intensity was measured while reducing the particle diameter by etching the outermost silica layer with hydrofluoric acid with 0-0.5 weight% concentrations The distribution of BBOT in a silica particle was studied based on the relation between the changes in particle diameter and the changes in emission intensity. The emission intensity of the BBOT-encapsulated silica particle oscillated with the decreasing particle diameter This result supported the multilayered model. Information regarding the distribution of the dye in the silica matrix will provide valuable information for understanding the formation mechanism of dye-encapsulated silica. In the experiment, the researchers used many compounds, for example, 2,5-Bis(5-(tert-butyl)benzo[d]oxazol-2-yl)thiophene (cas: 7128-64-5Synthetic Route of C26H26N2O2S).
2,5-Bis(5-(tert-butyl)benzo[d]oxazol-2-yl)thiophene (cas: 7128-64-5) belongs to benzothiophene derivatives. Benzothiophene is relatively a stable molecule. The core structure is a part of various pharmaceutical substances and natural products. Due to its aromaticity, thiophenes do not exhibit the same properties as conventional thioethers.Synthetic Route of C26H26N2O2S
Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem