| Title | Investigation on the luminescence behavior of terbium acetylsalicylate/bilirubin system via 2D-COS approaches |
| Authors | He, An-Qi Li, Qiang Yu, Zhen-Qiang Tian, Jing Song, Jun Feng, Juan Xu, Yi-Zhuang Noda, Isao Ozaki, Yukihiro |
| Affiliation | Shenzhen Univ, Coll Chem & Environm Engn, Shenzhen 518060, Peoples R China Shenzhen Univ, Coll Optoelect Engn, Minist Educ & Guangdong Prov, Key Lab Optoelect Devices & Syst, Shenzhen 518060, Peoples R China Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China East China Normal Univ, Coll Chem & Mol Engn, Shanghai 200241, Peoples R China Univ Elect Sci & Technol, Sch Life Sci & Technol, Chengdu 610054, Sichuan, Peoples R China Univ Delaware, Dept Mat Sci & Engn, Newark, DE 19716 USA Kwansei Gakuin Univ, Sch Sci & Technol, Dept Chem, Sanda, Hyogo 6691337, Japan |
| Issue Date | 15-Apr-2021 |
| Publisher | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY |
| Abstract | Terbium acetylsalicylate has been prepared, and the ethanol solution of the complex exhibits strong luminescence under the excitation of ultraviolet radiation. When a small amount of bilirubin solution is introduced into the solution containing a high concentration of terbium acetylsalicylate, a remarkable diminution of the luminescence of the terbium complex was observed. Investigations on the behavior and life-time of luminescence indicate that the quenching is not caused by forming a stable non luminescent product via a reaction between terbium acetylsalicylate and bilirubin. A pi-pi interaction between the chromophore of bilirubin and the aromatic moiety of ligand was revealed via the pattern of cross peaks in the 2D asynchronous spectrum generated using the DAOSD (double asynchronous orthogonal sample design) approach. Such an interaction paves a route for energy transfer in the quenching process. The combination of a high concentration of the terbium complex and a long life-time of luminescence in the lanthanide complex/bilirubin system forms a special scenario: a bilirubin molecule by diffusion may visit and deactivate dozens of excited terbium complexes within the half-life period of the lanthanide complex. This is why a small amount of bilirubin can bring about the significant reduction of luminescence on the solution containing a high concentration of the terbium complex. (c) 2021 Elsevier B.V. All rights reserved. |
| URI | http://hdl.handle.net/20.500.11897/608886 |
| ISSN | 1386-1425 |
| DOI | 10.1016/j.saa.2021.119427 |
| Indexed | SCI(E) |
| Appears in Collections: | å å¦ä¸ å å å·¥ç¨ å¦é ¢ 稀土材料化学与应用国家重点实验室 |
