Jose Luis Sosa-Sanchez

Meritorious Autonomous University of Puebla | BUAP

Phthalocyanines represent a significant class of organic semiconductors that have garnered attention for their potential applications in conducting polymers and organic electronics. The unique structural characteristics of phthalocyanines, coupled with the intriguing chemical behavior and variations in bandgap associated with different substitution...

In this study, iron phthalocyanine (FePc) thin films were obtained by spin-coating at 80°C and used as the active layer in organic thin-film transistors (OTFTs). The OTFTs have an inverted coplanar structure and were fabricated on plastic substrates made of polyethylene terephthalate. Silicon oxide spin-on glass was used as gate dielectric. The FeP...

Conventional inorganic semiconductors are the basis of modern electronics but their properties limit performance for certain applications. Two relevant applications for which these materials are not suitable are: (1) non-planar or flexible devices and (2) large-area prototypes. This limitation has driven the research of a new generation of thin fil...

In this work, the use of sublimated copper phthalocyanine (CuPc) organic thin films as a buffer interlayer in aluminum tracks on paper is presented for the first time. The CuPc was synthetized using a new eco-friendly synthetic protocol and the higher purity of the product turn out to be useful for the set forth applications. With the use of the Cu...

Organic semiconductors have recently gained more attention due to their electrical properties and flexibility for combining with other materials, mainly with inorganic semiconductors (silicon). In this work we fabricated heterostructures based on Erbium phthalocyanine (ErPc) on porous silicon (PS) and crystalline silicon (c-Si). The ErPc was synthe...

The search for novel materials and the development of improved processes for water purification have attracted the interest of researchers worldwide and the use of titanium dioxide in photocatalytic processes for the degradation of organic pollutants contained in water has been one of the benchmarks. Compared to crystalline titanium dioxide (cTiO2)...

A new one-pot synthesis of a novel A 3 B-type asymmetric zinc phthalocyanine (AZnPc) was developed. The phthalocyanine complex was characterized unambiguously and used to prepare a TiO 2 hybrid photocatalyst to enhance its photocatalytic activity in the visible range. Different compositions of the phthalocyanine dye were tested in order to find the...

In this study a sandwich-type octa-substituted Erbium (III) bis-phthalocyanine compound of increased solubility was synthetized from a metal free phthalocyanine with the same substitution pattern using strictly dry reaction conditions. Then the pure product obtained from a chromatographic purification method was deposited as thin films by spin coat...

In systems in atomic and nano scales such as clusters or agglomerates constituted of particles from a few to less than one hundred of atoms, quantum confinement effects are very important. Their optical and electronic properties are often dependent on the size of the systems and the way in which the atoms in these clusters are bonded. Generally, th...

Quantum effects are very important in nano scale systems such as molecules and clusters constituted of particles from a few to a few hundreds or thousands of atoms. Their optical and electronic properties are often dependent on the size of the systems and from the way in which the atoms in these molecules or clusters are bonded. Generally, these na...

Spin-coated films, approximately 100 nm thick, of a newly synthesized bis[octakis(octyl)phthalocyaninato] lutetium(III) complex on ultrasonically cleaned glass substrates exhibit pronounced chemichromic behaviour with potential application in healthcare. In situ kinetic optical absorption spectroscopic measurements show that the phthalocyanine Q-ba...

Electrical energy can be generated by using solar energy concentration. Normally, this type of systems requires a special device to achieve optimal heat dissipation. A no cover power Bi-Junction Transistor (BJT) has this advantage. An electrical power generator may be obtained if concentrated solar radiation is applied directly to the surface of a...

Spun films of novel thermotropic liquid crystalline lutetium bisphthalocyanine sandwich complexes substituted with sixteen octyl chains are employed as active organic semiconducting layers in the fabrication of organic field-effect transistors (OFET). When the device is annealed under vacuum at 70°C, an increase in the field effect mobility in the...

Electronic conduction studies have been carried out on evaporated tin- and silicon-phthalocyanine thin films. The samples showed carrier excitation via a field-lowering mechanism with a logJα˙V1/2 plot and the current density-voltage (J–V) characteristics were studied. Both polarities showed two characteristic regions in the J–V plots at low and hi...

Si-Phthalocyanines (SiPc) thin films were deposited on conductive substrates and their electronic properties were studied in sandwich-like Metal-SiPc-Metal structures. The current-voltage characteristics at different temperatures were determined. Aluminum and gold were used as electrode metals. For the Au-SiPc-Au structures, the J-V results were in...

The reaction between trans-PcSiCl2 (1) and the potassium salts of six fatty acids (2 a-2 f) led to the trans-PcSi[OOC(CH2)nCH3]2 compounds (3 a-3 f), which were characterised by elemental analysis, IR, UV/Vis and 1H, 13C, and 29Si NMR spectroscopy. From a detailed study of the NMR spectra, the strong anisotropic currents of the Pc macrocycle were f...

Thermal and microwave reactions between [PcSn(IV)Cl2] (1) and the potassium salts of eight fatty acids (2 a-h) led to cis-[(RCO2)2Sn(IV)Pc] compounds (3 a-h) in yields ranging from 54 to 90 %. Compounds 3 a-h were fully characterized by elemental analysis, spectroscopy (IR, UV/Vis, multinuclear NMR), and seven X-ray diffraction structures, whereby...

Two PcSn(IV) dicarboxylate molecules were obtained through efficient microwave methodology with the aim to test them as corrosion inhibitors in the oil industry. The compounds were characterized by elemental analysis, IR, UV-vis, (1)H, (13)C NMR, and X-ray diffraction. The relative configuration of the two carboxylates is cis, placing the fatty aci...

Nucleophilic substitution reactions on hexadecafluorophthalocyaninato zinc(II) with a variety of O, N, C, and S nucleophiles led to narrowly defined mixtures of polysubstituted phthalocyanines, some of which are completely inaccessible by classical phthalonitrile condensation reactions.

The synthesis and spectroscopic characterization of a new soluble silicon(IV) phthalocyanine complex is presented. The compound shows an increased solubility compared to its SiPcCl2 precursor and this allowed solution 1H NMR characterization. The assignment of the 1H NMR signals for the axial ligands is greatly facilitated due to the anisotropic hi...

Three newly elucidated crystal structures of group IV phthalocyaninato complexes are reported, along with data for two further SiPc carboxylate complexes. In one of these crystal structures, bis(undecylcarboxylate)Sn(IV) phthalocyanine, the tin ion is seven coordinate, which is a unique finding for this atom in phthalocyanine ring coordination. Com...

The microwave heating synthesis of (phthalocyaninato)bis(chloro)silicon(IV) prepared from diiminoisoindolene and silicon tetrachloride in quinoline has been shown to be rapid (5 min reaction time compared to 30 min with thermal heating) and results in a high yield (91% compared to 71% using thermal heating). A modified microwave ashing furnace was...

The crystal and molecular structure of bis(ferrocenecarboxylato)(phthalocyaninato)silicon(IV) (1) is reported. The structure is compared to the only other two fully solved Si(Pc) structures. The size of the Si atom is shown to vary with the nature of the axial ligands. The implications of this finding for the chemistry and structures of the [Si(Pc)...