دورية أكاديمية
Water-Soluble and Highly Luminescent Europium(III) Complexes with Favorable Photostability and Sensitive pH Response Behavior
| العنوان: | Water-Soluble and Highly Luminescent Europium(III) Complexes with Favorable Photostability and Sensitive pH Response Behavior |
|---|---|
| المؤلفون: | Wei, Chen, Wei, Huibo, Yan, Weibo, Zhao, Zifeng, Cai, Zelun, Sun, Boxun, Meng, Zhaosha, Liu, Zhiwei, Bian, Zuqiang, Huang, Chunhui |
| المساهمون: | Wei, HB, Bian, ZQ (reprint author), Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China., Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China. |
| المصدر: | PubMed ; SCI |
| بيانات النشر: | INORGANIC CHEMISTRY |
| سنة النشر: | 2016 |
| المجموعة: | Peking University Institutional Repository (PKU IR) / 北京大学机构知识库 |
| مصطلحات موضوعية: | INTRAMOLECULAR ENERGY-TRANSFER, LANTHANIDE(III) COMPLEXES, MACROCYCLIC EUROPIUM, RADIATIVE LIFETIME, TRIPLET-STATE, EMISSION, TERBIUM, LIGAND, SENSORS, IONS |
| الوصف: | Two highly luminescent and water-soluble Eu(III) complexes, Eu1 and Eu2, based on novel carboxyl-functionalized 1,5-naphthyridine derivatives 8-hydroxy-1,5-naphthyridine-2-carboxylic acid (H(2)L1) and 7-cyano-8-liydroxy-1,5-naphthyridine-2-carboxylic acid (H(2)L2), respectively, are designed and synthesized. The crystal structure of Eu2 indicates that the central Eu(III) ion is nine-coordinated by three tridentate ligands (O<^>N<^>O). Both Eu1 and Eu2 show strong luminescence in aqueous solution with quantum yields (lifetimes) of 28% (1.1 ms) and 14% (0.76 ms), respectively. The chelates display unique UV-light stability in solution and remain highly emissive after 100 min of strong UV irradiation (similar to 300 W.m(-2) at 345 nm). Moreover, they exhibit reversible luminescence intensity changes with varied pH values, and the response mechanism is investigated. "Turn-on" of the Eu(III) emission upon increasing pH is realized by ligand structure change from keto to enol anion form, resulting in red-shifted absorption band and suppressed quenching from solvents and N-H vibration upon deprotonating. The results show that these novel Eu(III) complexes are quite intriguing for potential application as bioimaging agents and pH probes. ; National Key Basic Research Program of China [2014CB643802]; National Natural Science Foundation of China [21371012, 21321001] ; SCI(E) ; PubMed ; ARTICLE ; weihuibo@163.com; bianzq@pku.edu.cn ; 20 ; 10645-10653 ; 55 |
| نوع الوثيقة: | journal/newspaper |
| اللغة: | English |
| تدمد: | 0020-1669 1520-510X |
| العلاقة: | INORGANIC CHEMISTRY.2016,55(20),10645-10653.; 1437802; http://hdl.handle.net/20.500.11897/492774Test; WOS:000385785700079 |
| DOI: | 10.1021/acs.inorgchem.6b01897 |
| الإتاحة: | https://doi.org/20.500.11897/492774Test https://doi.org/10.1021/acs.inorgchem.6b01897Test https://hdl.handle.net/20.500.11897/492774Test |
| رقم الانضمام: | edsbas.60BAE4A |
| قاعدة البيانات: | BASE |
| تدمد: | 00201669 1520510X |
|---|---|
| DOI: | 10.1021/acs.inorgchem.6b01897 |