A5022938122- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Magnetism in coordination complexes
- Lanthanide and Transition Metal Complexes
- Crystallography and molecular interactions
- Metal complexes synthesis and properties
- Advanced Chemical Physics Studies
- Molecular Junctions and Nanostructures
- Metal-Organic Frameworks: Synthesis and Applications
- Organic and Molecular Conductors Research
- Luminescence Properties of Advanced Materials
- Graphene research and applications
- Semiconductor materials and interfaces
- Organic Chemistry Cycloaddition Reactions
- Spectroscopy and Quantum Chemical Studies
- Chemical Thermodynamics and Molecular Structure
- Synthesis and Properties of Aromatic Compounds
- Graphene and Nanomaterials Applications
- Crystal Structures and Properties
- Chalcogenide Semiconductor Thin Films
- Supramolecular Chemistry and Complexes
- Luminescence and Fluorescent Materials
- Ferrocene Chemistry and Applications
- Organic Light-Emitting Diodes Research
- Polymer Nanocomposite Synthesis and Irradiation
University of Chile
2014-2024
Instituto de Ciências Farmacêuticas
2015-2020
Millennium Initiative for Collaborative Research on Bacterial Resistance
2018-2020
A very simple method of reductive amination, based on the Leuckart reaction, is reported. This enables not only reduction graphite oxide but also results in reduced graphene functionalized with amine groups, where amination degree 3.2 at. % as determined by XPS. The dominant nitrogen functional group was primary amine, pyridines and lactam groups were observed. It found that amino-functionalized a semi-metallic material because lack band gap, unlike presented gap 2.16 eV.
<title>Abstract</title> This work showcases the first evidence of anti-thermal quenching effect on neodymium(III) molecular thermometers working in biological windows within physiological temperature range. A mononuclear complex, [Nd(L)(NO<sub>3</sub>)<sub>3</sub>] (<bold>1Nd</bold>), where L is a macrocyclic ligand, was synthesized and used as precursor to develop two novel species: dinuclear [(Nd(L)(NO<sub>3</sub>))<sub>2</sub>(µ-BDC)](NO<sub>3</sub>)<sub>2</sub>·H<sub>2</sub>O...
A protocol to correct ab initio calculated luminescence spectra of NdIII complexes is proposed. The emission spectrum [NdIII(bipy)(tta)3] was measured calibrate the optimal correction for Racah parameters...
Abstract Fluoroelastomer‐based composites with nano‐sized bismuth oxide (B) and/or graphite (G) as fillers were prepared and characterized using FKM type 1 fluoroelastomer a matrix. The effects of these used singly or in combination on the crosslinking process, mechanical, thermal, dynamic electrical, optical, high‐energy radiation attenuation properties investigated. results showed that significantly increased moduli E50 (MPa) FKM/G FKM/GB by 1026% 1459%, respectively, compared to FKM. On...
A series of luminescent phenoxo-bridged dinuclear TbIII complexes with tripodal ligands, 2,2′-[[(2-pyridinylmethyl)imino]di(methylene)]-bis(4-R-phenol), where R = CH3 (LCH3) (I), Cl (LCl) (II), CH3O (LCH3O) (III), COOCH3 (LCOOCH3) (IV), were prepared to probe the effect para-substitution on phenol ring ligand luminescence. For these a complete suppression ligand-centered fluorescence is observed, which demonstrates an efficient ligand-to-metal energy transfer. Complex IV was found be one...
Considering the structural design of some scarce molecular-based Er-centred emitters in literature, we explored optical properties three ErIII hexaazamacrocyclic complexes, namely Er-EDA (1), Er-OPDA(2) and Er-DAP(3). The macrocyclic ligands these complexes differ lateral spacers, are derived from 2,6-pyridine-dicarbaldehyde ethylenediamine (EDA), ortho-phenylenediamine (OPDA) or 1,3-diaminopropane (DAP). Upon ligand-centred excitation, bluish-green green emissions ion were detected only for...
This work reports the structural characterization and photophysical properties of DyIII, TbIII, EuIII coordination polymers with two phenoxo-triazole-based ligands [2,6-di(1H-1,2,4-triazole-1-yl-methyl)-4-R-phenoxo, LRTr (R = CH3; Cl)]. These permitted us to obtain isostructural polymers, described as a 1D double chain, LnIII being nona-coordinated. The energies ligand triplet (T1) states were estimated using low-temperature time-resolved emission spectra YIII analogues. Compounds LClTr...
The probabilities of finding a certain number electrons enclosed in given volume is calculated and discussed for series molecules. Two different methodologies to do the partition molecular space separate volumes are investigated: Atoms Molecules, AIM, topologic analysis density, Electron Localization Function (ELF). formulas calculate probability distribution reviewed way implement them shortly explained. For molecules, we present how complement chemical information about localization...
This study presents the microwave-assisted synthesis and characterization of a series heterometallic coordination polymers (HMCPs) with 4-methyl-2,6-di[(1H-1,2,4-triazol-1-yl)]phenoxo ligand varying EuIII/TbIII ratios. Single crystal X-ray diffraction reveals double-chain structure bridged by triazolyl groups. Powder confirms isostructural nature synthesized HMCPs. The photophysical properties depend on lanthanide ion concentration excitation wavelength, leading to color shift from green...
To study how second-sphere interactions affect single-molecule magnet (SMM) properties of mononuclear lanthanide systems, two dysprosium(III) complexes [Dy(N-NCS)3(H2O)5]·0.45(KSCN)(18-crown-6) (1) and [Dy(NO3)2(N-NCS)3(H2O)]·(H2O)(NH4)22(18-crown-6) (2) were synthesized characterized by single-crystal X-ray diffraction, ac, dc magnetometry, multireference ab initio calculations. For 1, DyIII are encapsulated between crown ether molecules, while molecules crystallize in separate rows for 2....
Spacer of the N<sub>6</sub>macrocyclic ligand determines its planar distortion and modulates magnetic anisotropy [LnN<sub>6</sub>(NCS)<sub>3</sub>] complexes.
The present work reports a new group of heterogeneous catalysts with 3D structure, CuLnIDA, {[Cu<sub>3</sub>Ln<sub>2</sub>(IDA)<sub>6</sub>]·8H<sub>2</sub>O} (Ln: La<sup>III</sup>, Gd<sup>III</sup> or Yb<sup>III</sup>), an organic linker (H<sub>2</sub>IDA: iminodiacetic acid).
A family of macrocyclic complexes [M2LnCl2] have been synthesized and characterized (M: CuII or ZnII; Ln: ligand derived from 2-hydroxy-5-methyl-1,3-benzenedicarbaldehyde different aliphatic diamines o-phenylenediamine). The influence the aromaticity metal center on spectroscopic properties (absorption emission) has studied. Making use weak interactions between hydrated potassium ions layers K0.4Mn0.8PS3 precursor, obtained intercalated in interlamellar space by a microwave assisted cationic...
Novel heterometallic 3d–4f inorganic polymers were studied as catalysts without an activator in solvent-free medium; the mechanism being demostrated by spectroscopy.
Abstract It is shown that information theory concepts based on the Shanon entropy are useful to define indices yielding a quantitative measure of spin polarization. Numerical results for ground state all atoms from He Xe presented. They were obtained by solving numerically Kohn–Sham equations with two different approximations exchange–correlation functionals. The defined predict very nicely periodical trends along table elements. great greater multiplicity and zero closed‐shell atoms. © 2002...
EPR and magnetic susceptibility data of composites based on MnPS<sub>3</sub> show the influence intercalated species their properties.