Premium
Cover Feature: Phosphorescence at Low Temperature by External Heavy‐Atom Effect in Zinc(II) Clusters (Chem. Eur. J. 23/2019)
Author(s) -
Kobayashi Fumiya,
Ohtani Ryo,
Teraoka Saki,
Yoshida Masaki,
Kato Masako,
Zhang Yingjie,
Lindoy Leonard F.,
Hayami Shinya,
Nakamura Masaaki
Publication year - 2019
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201901245
Subject(s) - phosphorescence , chemistry , zinc , cluster (spacecraft) , atom (system on chip) , iodide , coupled cluster , ion , photochemistry , crystallography , inorganic chemistry , molecule , physics , organic chemistry , fluorescence , quantum mechanics , computer science , embedded system , programming language
Zinc(II) complexes have a significant hurdle to overcome to exhibit phosphorescence because of the absence of spin‐orbital coupling (SOC) in the Zn II ion. The present manuscript reports the phosphorescent behaviour of a Zn II cluster [Zn 7 L 6 (μ 3 ‐OMe) 2 (μ 3 ‐OH) 4 ]I 2 (HL=methyl‐3‐methoxysalicylate) promoted by the external heavy‐atom effect (EHE) associated with the presence of iodide counter anions that act to introduce SOC into the system. This heptanuclear Zn II cluster with I − counter anions shows phosphorescence ( λ max =520 nm) with an extremely long emission lifetime ( τ =95.3 ms) at 77 K. More information can be found in the Communication by S. Hayami, M. Nakamura, et al. on page 5875.