From a Tb3+ chelated compound to a hybrid material: selective emission responses to anions
- 40 Downloads
A novel terbium 2-hydroxymethyl-benzoimidazole-6-carboxylic acid complex has been designed and unique emission changes to fluoride anions in comparison with HSO 4 − , AcO−, Cl−, Br−, and I− were observed. Then, the complex was encapsulated into an inorganic matrix. The novel hybrid material, with strong green emission was successfully synthesized as an anions receptor in water. More importantly, this hybrid material not only gave luminescence response to F−, but also to HSO 4 − . Spectroscopic studies demonstrated that the recognition process for fluoride ions can be mainly ascribed to its hydrogen bonding interactions with hydrogen bond donor units (NH and OH). In case of hydrogen sulfate, the sensing effects can be probably attributed to its acidity instead of hydrogen bonding interactions.
Keywordssensor luminescent terbium fluoride hydrogen sulfate
Unable to display preview. Download preview PDF.
- Sambrook, M. R., Beer, P. D., Wisner, J. A., Rowena, L., Cowley, A. R., Szemes, F., & Drew, M. G. B. (2005). Anion-templated assembly of pseudorotaxanes: Importance of anion template, strength of ion-pair thread association, and macrocycle ring size. Journal of the American Chemical Society, 127, 2292–2302. DOI: 10.1021/ja046278z.CrossRefGoogle Scholar
- Santacroce, P. V., Okunola, O. A., Zavalij, P. Y., & Jeffery, T. D. (2006). A transmembrane anion transporter selective for nitrate over chloride. Chemical Communications, 2006, 3246–3248. DOI: 10.1039/b607221f.Google Scholar
- Thakurdesai, P. A., Wadodkar, S. G., & Chopade, C. T. (2007). Synthesis and anti-inflammatory activity of some benzimidazole-2-carboxylicacids. Pharmacologyonline, 1, 314–329.Google Scholar
- Wang, Q. M., Tan, C. L., Chen, H. Y., & Tamiaki, H. (2010). A new fluoride luminescence quencher based on a nanostructured covalently bonded terbium hybrid material. Journal of Physical Chemistry C, 114, 13879–13883. DOI: 10.1021/jp105035v.Google Scholar