The ligand substitution reaction of [Co(an)6]2+ (an = acetonitrile) with 1,1,3,3-tetramethylurea (TMU) in the noncoordinating solvent, nitromethane, was spectrophotometrically investigated by titration. The observed spectral changes were analyzed using a model with the four steps of ligand substitution. The component complexes involved in the substitution were found to be 6-coordinate [Co(an)6]...

The phase behavior of dioleoylphosphatidylethanolamine in aqueous solutions of urea, N,N'-dimethylurea (DMU), and N,N,N',N'-tetramethylurea (TMU) has been characterized by synchrotron X-ray diffraction and differential scanning calorimetry. All three solutes stabilize the lamellar liquid-crystalline phase at the expense of lamellar-gel phase and inverted hexagonal phase of the phospholipid when...

The Bx-tree [1] is a query and update efficient B+-tree11 based index structure for moving objects which are rep12 resented as linear functions. The Bx-tree uses a lineariza13 tion technique to exploit the volatility of the data values 14 being indexed i. e., moving-object locations. Specifically, 15 data values are first partitioned according to their update 16 time and then linearized within ...

Dyes are the most abundant hazardous components existing in the environment because of their extensive use in industries. So, in the present study, two isoreticular Zn(II)-MOFs, TMU-16 and TMU-16-NH2, were used for the adsorptive removal of harmful cationic dyes from aquatic medium. In order ...

Dedicated to Professor Joachim Knabe on the occasion o f his 65th birthday Z. Naturforsch. 41b, 1461 — 1470 (1986); received July 14, 1986 Formation Constants of Molecular Complexes, Face-to-Face Complexes, Tetramethyluric Acid Complexes, A renes, ‘H NMR Spectra The complexation of tetram ethyluric acid (TM U) with the donors (D) benzene (B), biphenyl (BP), naphthalene (N), and phenanthrene (P)...

Taipei Medical University (TMU) healthcare system has a very significant role in the development and promotion of healthcare services across Taiwan, serving the nation since its inception in 1960, and we believe it can play an important role in health security as well. Currently, TMU has 10 colleges dealing with various fields of healthcare sciences, catering to more than 6,000 students—includi...

Nowadays metal-organic frameworks with multiple luminescent centers are very fascinating as multifunctional luminescent material because of their luminescence properties, which could be systematically tuned by deliberate use of organic ligands and metal ions. In this research, we explored a microporous mixed-ligand MOF for highly selective and sensitive detection of metal ions. A two-fold inter...

We have already shown that the in-vacuum gas-phase Meerwein reaction of (thio)acylium ions is general in nature and useful for class-selective screening of cyclic (thio)epoxides. Herein we report that this gas-phase reaction can also be performed efficiently at atmospheric pressure under both electrospray ionization (ESI) and atmospheric pressure chemical ionization (APCI) conditions. This alte...

A dye-sensitized metal-organic framework, TMU-5S, was synthesized based on introducing the laser dye Rhodamine B into the porous framework TMU-5. TMU-5S was investigated as a ratiometric fluorescent sensor for the detection of explosive nitro aromatic compounds and showed four times greater selectivity to picric acid than any state-of-the-art luminescent-based sensor. Moreover, it can selective...