Novel ligands from direct benzylic functionalisation of tris(2-pyridylmethyl)amine.

Tris-(2-pyridylmethyl)amines (TPA or TPMA) are polipyrydine-based ligands extensively used in catalysis and supramolecular chemistry due their capability to form stable tetradentate complexes with a large variety of metals. The unsubstituted ligand, which is also commercially available, can be synthesised by consecutive alkylation of a picoline or by reductive amination of a pyridine aldehyde. In this article, we report a novel synthetic method which opens to the post-functionalisation of these ligands in the benzylic position.

Evaluation of the Thermal Diffusivity of Carbon/Phenolic Composites (CPCs) through Oxy-Acetylene Torch (OAT) Test-Part 1: Experimental Characterization and Preliminary Validation.

Carbon/Phenolic Composites (CPCs) are essential to manufacture many portions of the nozzle assembly of Solid Rocket Motors (SRMs) which are essential both to preserve the independent access to space as well as for the homeland security. In our research, a feasible approach aimed at preliminary retrieving the in-plane and out-plane thermal diffusivity of CPCs through the Oxy-Acetylene Torch (OAT) tests was validated. The proposed approach showed to be effective and able to bypass some limitations of common protocols, especially in terms of capability to determine the thermal diffusivity of CPCs at high heating rates.

Synthesis and Characterization of Iridium(III) Complexes with Substituted Phenylimidazo(4,5-)1,10-phenanthroline Ancillary Ligands and Their Application in LEC Devices.

In this work, we report on the synthesis and characterization of six new iridium(III) complexes of the type [Ir(C^N)(N^N)] using 2-phenylpyridine (-) and its fluorinated derivative (-) as cyclometalating ligands (C^N) and R-phenylimidazo(4,5-)1,10-phenanthroline (R = H, CH, F) as the ancillary ligand (N^N). These luminescent complexes have been fully characterized through optical and electrochemical studies. In solution, the - series exhibits quantum yields (Ф) twice as high as the - series, exceeding 60% in dichloromethane and where MLCT/LLCT and LC emissions participate in the phenomenon.

Air- and Water-Stable Heteroleptic Copper (I) Complexes Bearing Bis(indazol-1-yl)methane Ligands: Synthesis, Characterisation, and Computational Studies.

A series of four novel heteroleptic Cu(I) complexes, bearing bis(1-indazol-1-yl)methane analogues as , ligands and DPEPhos as the ligand, were synthesised in high yields under mild conditions and characterised by spectroscopic and spectrometric techniques. In addition, the position of the carboxymethyl substituent in the complexes and its effect on the electrochemical and photophysical behaviour was evaluated. As expected, the homoleptic copper (I) complexes with the , ligands showed air instability.