A Porous Metal–Organic Framework Constructed from Carboxylate–Pyrazolate Shared Heptanuclear Zinc Clusters: Synthesis, Gas Adsorption, and Guest-Dependent Luminescent Properties

Abstract

A three-dimensional porous structure of [Zn7O2(bpdc)4(dmpp)2]·6DEF·10H2O (MAC-7, H2bpdc = 4,4'-biphenyldicarboxylic acid, Hdmpp = 3,5-dimethyl-4-(4'-pyridyl)pyrazole), built of 12-bridged carboxylate-pyrazolate shared Zn7O2 clusters, has been synthesized. Because of the presence of 12-bridged carboxylate-pyrazolate shared building block, MAC-7 is a double-linked pcu-type framework and shows reversible phase transformation. Photoluminescent property studies indicate that MAC-7 could sense nitrobenzene over toluene, p-xylene, and mesitylene by luminescent quenching.

Coordination Polymers with Intriguing Photoluminescence Behavior: The Promising Avenue for Greatest Long‐Lasting Phosphors

“…As supported by TD‐DFT calculations, both excitation and emission phenomena pass through LLCT transitions of σ ↔ π* and π ↔ π* nature, which is consistent with the large bathochromic shift (of 110 nm) observed for 8‐Cd with respect to the free HMIMC ligand . Cooling down to 10 K, the sample not only gains a significant increase in intensity but also a pale green afterglow long enough as to be traced by human eye.…”

Coordination polymers based on Mn(II) and BPNO with selective and recyclable sensing of nitroaromatics

“…如图4所示, 用波长为398 nm光激发配体BPNO, 在472 nm处发射荧光, 源于-*电子跃迁 [12] . 1和3分 [14] . 该现象和文献 [15] 发射峰光谱的重复面积决定着能量转移的强弱 [16,17] .…”

3D Macroporous Zinc Compound/Silicone Hybrid Foams for Amperometric Sensing of Glucose Oxidase

“…Strengthening effort is being put forth to investigate the potential application of the zinc compounds as a sensing platform. Several examples can be found: 1) {[Zn(HCbdcp) 2 ]H 2 O} n (Cbdcp = N ‐(4‐carboxybenzyl)‐(3,5‐dicarboxyl)pyridinium) was used for sensing of human immunodeficiency virus‐1 ds‐DNA sequences; 2) [Zn(PAM)(en)] (PAM = 4,4′‐methylenebis(3‐hydroxy‐2‐naphthalenecarboxylate), en = 1,2‐ethanediamine) for sensing of 2,4,6‐trinitrophenol and Cu 2+ ion; 3) two zinc(II) coordination polymers [Zn 2 (tib) 2 (H 2 BDC‐Br = 2‐bromo‐1,4‐benzenedicarboxylic acid)] 2 · 2 SO 4 ·17H 2 O and [Zn 4 (tib) 2 (BDC‐Br) 3 (H 2 O) 4 SO 4 ]·7.5H 2 O·2.5DMF (tib = 1,3,5‐tris(1‐imidazolyl)benzene) for sensing of acetone; Zn 3 (H 3 BTC = benzen‐1,3,5‐tricarboxylic acid) 2 ·12H 2 O for sensing of organoamines; [Zn 2 (TPOM)(NDC) 2 ]·3.5H 2 O (TPOM = tetrakis(4‐pyridyloxymethylene)methane, H 2 ndc = 2,6‐naphthalenedicarboxylic acid) for sensing of Fe(III) and Cr(VI) Ions; [Zn 7 O 2 (bpdc) 4 (dmpp) 2 ]·6DEF·10H 2 O (H 2 bpdc = 4,4′‐biphenyldicarboxylic acid, Hdmpp = 3,5‐dimethyl‐4‐(4′‐pyridyl)pyrazole) for sensing of nitrobenzene molecule over toluene, p ‐xylene, mesitylene, and cyclohexane; given that they hold the advantages of easy synthesis, flexible structure, and the combination of both organic and inorganic components …”