Near-infrared luminescent mesoporous MCM-41 materials covalently bonded with ternary thulium complexes |
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| Authors: | Jing Feng Shu-Yan Song Wei-Qiang Fan Li-Ning Sun Xian-Min Guo Chun-Yun Peng Jiang-Bo Yu Ying-Ning Yu Hong-Jie Zhang |
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| Affiliation: | 1. State Key Laboratory of Rare Earth Resource Utilizations, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, PR China;2. Graduate School of the Chinese Academy of Sciences, Beijing, PR China;1. School of Physical Science and Information Technology, LiaochengUniversity, Liaocheng 252059, China;2. Shandong Provinical Key Laboratory of Optical Communication Science and Technology, Liaocheng 252059, China;1. Shandong Provincial Analysis and Test Center, ShanDong Academy of Science, Jinan 250014, China;2. National Center for Nanosicence and Technology, Beijing 100190, China;3. China Banknote Ink Company, Shanghai 201315, China;1. School of Science and Technology, Wawasan Open University, 54, Jalan Sultan Ahmad Shah, 10050 Penang, Malaysia;2. Faculty of Science, Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, 31900 Kampar, Perak, Malaysia;1. College of Biology, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China;2. Department of Traditional Chinese Medicine, The Fourth Hospital of Changsha, Changsha 410006, China;1. Department of Chemistry, Chungnam National University, Yuseong-gu, Daejeon 305-764, Republic of Korea;2. Department of Chemistry, Yeungnam University, Gyeongsan, Gyeongbuk 712-749, Republic of Korea;1. Department of Chemistry, Isfahan University of Technology, Isfahan 84156–83111, Iran;2. Department of Chemistry, Faculty of Science, Vali-e-Asr University of Rafsanjan, P.O. Box 518, Rafsanjan, Iran |
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| Abstract: | Two β-diketones 4,4,4-trifluoro-1-2-thenoyl-1,3-butanedione (Htta) and 4,4,4-trifluoro-1-(2-naphthyl)-1,3-butanedione (Htfnb), which contain trifluoroalkyl chain, were selected as the main sensitizer for synthesizing Tm(L)3phen (L = tta, tfnb) complexes. The two near-infrared (NIR) luminescent thulium complexes have been covalently bonded to the ordered mesoporous material MCM-41 via a functionalized 1,10-phenanthroline (phen) group 5-(N,N-bis-3-(triethoxysilyl)propyl)ureyl-1,10-phenanthroline (phen-Si) [The resultant mesoporous materials are denoted as Tm(L)3phen–MCM-41 (L = tta, tfnb)]. The Tm(L)3phen–MCM-41 (L = tta, tfnb) mesoporous materials were characterized by small-angle X-ray diffraction (XRD) and N2 adsorption/desorption, and they show characteristic mesoporous structure of MCM-41. Luminescence spectra of the Tm(L)3phen–MCM-41 (L = tta, tfnb) mesoporous materials were recorded and the corresponding luminescence decay curves were obtained. After ligand-mediated excitation, the emission spectra of the Tm(L)3phen–MCM-41 (L = tta, tfnb) mesoporous materials show the characteristic NIR-luminescence of the Tm3+ ion. The full width at half maximum (fwhm) of the 1474-nm emission band are 96 and 100 nm for Tm(tta)3phen–MCM-41 and Tm(tfnb)3phen–MCM-41, respectively. The good luminescent performances enable these NIR-luminescent mesoporous materials to have potential applications in optical amplification [broadening amplification band from C band (1530–1560 nm) to S+ band (1450–1500 nm)]. Furthermore, the comparison of the luminescence behavior for Tm(tta)3phen–MCM-41 and Tm(tfnb)3phen–MCM-41 mesoporous materials was investigated. It shows that Tm(tfnb)3phen–MCM-41 is somewhat superior to Tm(tta)3phen–MCM-41 as optical amplifier. |
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