Building Light‐Emitting Metal‐Organic Frameworks by Post‐Synthetic Modification

Abstract

Ln 3 + -bearing Metal-Organic Frameworks (MOFs) are attracting much attention because of their unique luminescence properties and the possibility of fine-tuning the metal coordination spheres by post-synthetic modification (PSM). Here, we report PSM of the well-known IRMOF-3 by reaction with methyl 3chloro-3-oxopropanoate and pyridine-2,6-dicarbonyl dichloride affording, respectively, IRMOF-3-CM and IRMOF-3-PY. 1 H NMR of the digested modified samples showed ca. 100 % conversion of the amino group. The pendant groups of PSM IRMOF-3 were subsequently used to coordinate Eu + 3 and Tb 3 + and the luminescence properties of the materials studied.[a] Dr.

Pyridine-2,6-Dicarboxylic Acid Esters (pydicR2) as O,N,O-Pincer Ligands in CuII Complexes

“…In addition to this, we had the idea to set up a one-pot reaction using pyridine-2,6-dicarbonyl dichloride (pydicCl2), a Cu II source, and the corresponding alcohol (methanol or phenol) to form the ligand in the presence of the coordinating metal ion and a base (2). The base was quite similar to what has been reported recently for the formation of lanthanide coordinated IRMOF-3-PY through a post-synthetic modification [5]. In addition to this, we had the idea to set up a one-pot reaction using pyridine-2,6-dicarbonyl dichloride (pydicCl 2 ), a Cu II source, and the corresponding alcohol (methanol or phenol) to form the ligand in the presence of the coordinating metal ion and a base (2).…”

“…In addition to this, we had the idea to set up a one-pot reaction using pyridine-2,6-dicarbonyl dichloride (pydicCl 2 ), a Cu II source, and the corresponding alcohol (methanol or phenol) to form the ligand in the presence of the coordinating metal ion and a base (2). The base was quite similar to what has been reported recently for the formation of lanthanide coordinated IRMOF-3-PY through a post-synthetic modification [5].…”

“…Pyridine-2-6-dicarboxylate (pydic 2− ) is a frequently used ligand and coordinates are usually in a deprotonated tridentate mode. The coordinates use the N donor atom and the two carboxylate O donor functions, including the possibility of bridging (Scheme 1) [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. In contrast to this, the pydic ester ligands are neutral and have three options of tris-chelate O,N,O binding, which gives rise to three different isomers O carbonyl -M-O carbonyl (CC isomer), O carbonyl -M-O alkoxy (CA isomer), and O alkoxy -M-O alkoxy (AA isomer) (Scheme 1) while a bridging mode observed frequently for pydic 2− is less probable [15][16][17].…”

Curcumin@metal organic frameworks nano-composite for treatment of chronic toxoplasmosis

“…These unique properties making MOFs have application in a lot of areas. MOFs are not only used in catalysis [3], gas storage [4] separation [5], water treatment [6], fuel purification [7], light emitters [8][9][10] but also used in drug delivery and imaging applications [11]. To date, most studies have investigated the pathway associated with pain and severe complications; while nano MOFs for oral administration, a common and simpler route commonly used, remain unexplored.…”

Luminescent Nanothermometers Obtained by Post‐Synthetic Modification of Metal‐Organic Framework MIL‐68

“…Certain MOFs features, such as a high surface area, large pore volume and a widely tuneable composition make them promising materials for many applications including gas storage and separation, catalysis and photocatalysis, optical, and in the biomedical area . Recently, post‐synthetic modification, i.e., the modification of a MOF after its synthesis preserving the essential features of the framework structure, was used as a route to obtain light emitting materials via coordination of the parent MOF to a trivalent lanthanide ion (Ln 3+ ) . These materials have, among other, the ability to sense with high sensitivity certain metal ions in solution …”