TY - JOUR
T1 - Lanthanide anionic metal-organic frameworks containing semirigid tetracarboxylate ligands
T2 - Structure, photoluminescence, and magnetism
AU - Su, Shengqun
AU - Chen, Wan
AU - Qin, Chao
AU - Song, Shuyan
AU - Guo, Zhiyong
AU - Li, Guanghua
AU - Song, Xuezhi
AU - Zhu, Min
AU - Wang, Song
AU - Hao, Zhaomin
AU - Zhang, Hongjie
PY - 2012/4/4
Y1 - 2012/4/4
N2 - A series of lanthanide anionic metal-organic frameworks, [NH 2(CH 3) 2][Ln(MDIP)(H 2O)] (Ln = Pr (1), Nd (2), Sm (3), Eu (4), Gd (5), Tb (6), Dy (7); H 4MDIP = methylenediisophthalic acid) and [NH 2(CH 3) 2][Ln(MDIP)(H 2O)]•0.5NH(CH 3) 2 (Ln = Er (8), Tm (9), Yb (10)), have been synthesized and characterized. In compounds 1-7, the adjacent Ln 3+ ions are intraconnected to form infinite metal-carboxylate oxygen chain-shaped building blocks along the [001] direction. In compounds 8-10, MDIP ligands bridge dinuclear lanthanide centers to form three-dimensional frameworks which can be rationalized as a (4,8)-connected topological net with the Schläfli symbol of (4 10.6 14.8 4)(4 5.6) 2. Dimethylamine cations occupy the vacancy of all the compounds as counterions. The photophysical properties of trivalent Pr, Nd, Sm, Eu, Tb, Dy, Er, Yb compounds at room temperature were investigated and showed that MDIP is an efficient sensitizer of the luminescence of both the Tb 3+ ion emitting visible light and the Yb 3+ ion emitting in the near-IR. Antiferromagnetic interactions between Gd 3+ ions were observed from magnetic susceptibility data.
AB - A series of lanthanide anionic metal-organic frameworks, [NH 2(CH 3) 2][Ln(MDIP)(H 2O)] (Ln = Pr (1), Nd (2), Sm (3), Eu (4), Gd (5), Tb (6), Dy (7); H 4MDIP = methylenediisophthalic acid) and [NH 2(CH 3) 2][Ln(MDIP)(H 2O)]•0.5NH(CH 3) 2 (Ln = Er (8), Tm (9), Yb (10)), have been synthesized and characterized. In compounds 1-7, the adjacent Ln 3+ ions are intraconnected to form infinite metal-carboxylate oxygen chain-shaped building blocks along the [001] direction. In compounds 8-10, MDIP ligands bridge dinuclear lanthanide centers to form three-dimensional frameworks which can be rationalized as a (4,8)-connected topological net with the Schläfli symbol of (4 10.6 14.8 4)(4 5.6) 2. Dimethylamine cations occupy the vacancy of all the compounds as counterions. The photophysical properties of trivalent Pr, Nd, Sm, Eu, Tb, Dy, Er, Yb compounds at room temperature were investigated and showed that MDIP is an efficient sensitizer of the luminescence of both the Tb 3+ ion emitting visible light and the Yb 3+ ion emitting in the near-IR. Antiferromagnetic interactions between Gd 3+ ions were observed from magnetic susceptibility data.
UR - http://www.scopus.com/inward/record.url?scp=84859415430&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84859415430&partnerID=8YFLogxK
U2 - 10.1021/cg201283a
DO - 10.1021/cg201283a
M3 - Article
AN - SCOPUS:84859415430
SN - 1528-7483
VL - 12
SP - 1808
EP - 1815
JO - Crystal Growth and Design
JF - Crystal Growth and Design
IS - 4
ER -