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18-Crown-6 Coordinated Metal Halides with Bright Luminescence and Nonlinear Optical Effects

Merzlyakova, Elena 1; Wolf, Silke 1; Lebedkin, Sergei 2; Bayarjargal, Lkhamsuren; Neumeier, B. Lilli 1; Bartenbach, Daniel 1; Holzer, Christof 3; Klopper, Wim 3; Winkler, Bjoern; Kappes, Manfred 3; Feldmann, Claus 1
1 Institut für Anorganische Chemie (AOC), Karlsruher Institut für Technologie (KIT)
2 Karlsruher Institut für Technologie (KIT)
3 Institut für Physikalische Chemie (IPC), Karlsruher Institut für Technologie (KIT)

Abstract:

The crown-ether coordination compounds ZnX$_{2}$(18-crown-6), EuX$_{2}$(18-crown-6) (X: Cl, Br, I), MnI$_{2}$(18-crown-6), Mn$_{3}$Cl$_{6}$(18-crown-6)2, Mn$_{3}$I$_{6}$(18-crown-6)$_{2}$, and Mn$_{2}$I$_{4}$(18-crown-6) are obtained by ionic-liquid-based synthesis. Whereas MX$_{2}$(18-crown-6) (M: Zn, Eu) show conventional structural motives, Mn$_{3}$Cl$_{6}$(18-crown-6)$_{2}$, Mn$_{3}$I$_{6}$(18-crown-6)$_{2}$, and Mn$_{2}$I$_{4}$(18-crown-6) exhibit unusual single MnX$_{4}$ tetrahedra coordinated to the crown-ether complex. Surprisingly, some compounds show outstanding photoluminescence. Thus, rare Zn$^{2+}$-based luminescence is observed and unexpectedly efficient for ZnI$_{2}$(18-crown-6) with a quantum yield of 54%. Unprecedented quantum yields are also observed for Mn$_{3}$I$_{6}$(18-crown-6)$_{2}$, EuBr$_{2}$(18-crown-6), and EuI$_{2}$(18-crown-6) with values of 98, 72, and 82%, respectively, which can be rationalized based on the specific structural features. Most remarkable, however, is Mn$_{2}$I$_{4}$(18-crown-6). Its specific structural features with finite sensitizer–activator couples result in an extremely strong emission with an outstanding quantum yield of 100%. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000134584
Veröffentlicht am 30.06.2021
Originalveröffentlichung
DOI: 10.1021/jacs.0c09454
Scopus
Zitationen: 20
Web of Science
Zitationen: 18
Dimensions
Zitationen: 22
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Institut für Physikalische Chemie (IPC)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 01.2021
Sprache Englisch
Identifikator ISSN: 0002-7863, 1520-5126
KITopen-ID: 1000134584
HGF-Programm 43.32.01 (POF IV, LK 01) Molecular Materials Basis for Optics & Photonics
Erschienen in Journal of the American Chemical Society
Verlag American Chemical Society (ACS)
Band 143
Heft 2
Seiten 798–804
Vorab online veröffentlicht am 06.01.2021
Nachgewiesen in Web of Science
Dimensions
Scopus
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