Abstract
Four isostructural heterobinuclear Zn-Ln (Ln=Eu or Tb) complexes are prepared through the self-assembly of benzimidazole derivatives 2-(2-hydroxy-3-methoxyphenyl)benzimidazole (HL) or 2-(5bromo-2-hydroxy-3-methoxyphenyl)benzimidazole (HL) with Zn(CH3COO)2·2H2O and Eu(NO3)3·6H2O or Tb(NO3)3·6H2O. The complexes are characterized by single-crystal X-ray diffraction, Fourier transform infrared (FTIR) spectroscopy, elementary analysis, and electrospray ionization mass spectrometry (ESIMS). Three of the complexes form single crystals, while the fourth is polycrystalline. UV-Vis absorption, excitation and emission spectra of the Tb -based complexes reveal strong, characteristic luminescence from Tb + with emissive lifetimes in the microsecond range. Therefore, Tb + has been sensitized from the excited state of the ligands because of effective intramolecular energy transfer. The Eu complexes do not show characteristic emission because of deactivation by a different pathway. [Article] doi: 10.3866/PKU.WHXB201305081 www.whxb.pku.edu.cn 物理化学学报(Wuli Huaxue Xuebao) Acta Phys. -Chim. Sin. 2013, 29 (7), 1408-1414 July Received: February 4, 2013; Revised: May 8, 2013; Published on Web: May 8, 2013. ∗Corresponding authors. ZHAO Shun-Sheng, Email: shshzhao@xust.edu.cn. LU Xing-Qiang, Email: lvxq@nwu.edu.cn. The project was supported by the National Natural Science Foundation of China (21103135, 21173165, 21073139), Natural Science Basic Research Plan in Shaanxi Province of China (2011JQ2011), Scientific Research Program Funded by Shaanxi Provincial Education Commission, China (12JK0622), and Foundation of Xiʹan University of Science and Technology, China (2010QDJ030). 国家自然科学基金(21103135, 21173165, 21073139),陕西省自然科学基础研究计划(2011JQ2011),陕西省教育厅自然科学专项(12JK0622)和西 安科技大学博士启动金(2010QDJ030)资助项目 C Editorial office of Acta Physico-Chimica Sinica 1408 ZHAO Shun-Sheng et al.: Luminescent Zn-Tb Complexes Formed by Benzimidazole Derivatives and Metal Salts No.7
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
