Premium
Luminescent Organically Templated Lanthanide Oxalate–Selenate Hybrids
Author(s) -
Feng MeiLing,
Mao JiangGao
Publication year - 2007
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200700744
Subject(s) - isostructural , chemistry , lanthanide , oxalate , selenate , crystallography , inorganic chemistry , luminescence , hydrothermal synthesis , molecule , hybrid material , hydrogen bond , sodium oxalate , crystal structure , hydrothermal circulation , selenium , organic chemistry , ion , chemical engineering , physics , optoelectronics , engineering
Hydrothermal reactions of lanthanide nitrates with selenic acid, sodium oxalate, and organic amines led to two series of new organically templated lanthanide oxalate–selenate hybrids with 2D‐layer or 3D‐network structures, namely, Ln 2 (SeO 4 ) 2 (C 2 O 4 )(H 2 O) 4 · pip (Ln = Eu 1 ; Tb 2 ; Dy 3 ; Er 4 ; Yb 5 ) (pip = piperazine) and [H 2 pip] 2 [Ln 2 (SeO 4 ) 2 (C 2 O 4 ) 3 ] · H 2 O (Ln = Er 6 ; Yb 7 ; Lu 8 ; Y 9 ). Their structures were established by X‐ray single‐crystal diffraction. Isostructural compounds 1 – 5 feature a 2D inorganic–organic hybrid neutral layer of Ln 2 (SeO 4 ) 2 (C 2 O 4 )(H 2 O) 4 . The neutral piperazine molecules are located at the interlayer spaces and interconnect with the inorganic skeleton through hydrogen bonds. Compounds 6 – 9 are isostructural and possess 3D pillared layered architectures composed of lanthanide oxalate layers bridged by selenate anions (the pillar). The template cations are located at the tunnels of the structure. Compounds 1 , 2 , and 3 display emission bands in the red‐, green‐, and pink‐light regions, respectively, and these compounds have lifetimes of 0.178, 0.962, and 0.276 ms, respectively. Compounds 6 and 7 both exhibit emission bands in the near‐IR region. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)