Triazolephthalocyanine versus phthalocyanine nickel(ii) and copper(ii) complexes: a thermogravimetric stability study

Structural analogs of tetrapyrrole macrocycles and their biological properties

“…56 Triazolephthalocyanines have an inherent dipole mo ment, form ordered Langmuir-Blodgett layers 57,58 hav ing semiconducting properties, 59 exhibit nonlinear opti cal 60,61 and liquid crystalline properties, 62 and are char acterized by high thermal stabilities. 63 The use of substituted maleonitriles and pyrrolines led to the discovery of a new class of non centrosymmetric ABBB type macroheterocycles, viz., porphyrazine deriva tives, called triazoleporphyrazines. 18 For example, the reactions of 3,4 bis(4 tert butylphenyl) 2,5 diimino pyrroline with 3,5 diamino 1,2,4 triazole or 1 dodecyl 3,5 diamino 1,2,4 triazole in a molar ratio of 3 : 1 pro duced hexakis(4 tert butylphenyl)triazoleporphyrazine 38a and its N dodecyl substituted analog 38b, respec tively, in good yields (Scheme 9).…”

Retinal photoreceptor arrangement, SWS1 and LWS opsin sequence, and electroretinography in the South American marsupial Thylamys elegans (Waterhouse, 1839)

“…Kinetic processes18 related to cure and material composition19–21 can be also investigated by this technique. Kinetic parameters, such as rate (frequency) factors, activation energies, and reaction orders can be obtained from TGA measurements 22, 23…”

Computational study of the geometry and electronic structure of triazolephthalocyanines

“…The search for advanced materials with potential technological applicability, especially in the optoelectronic and photonic fields, has activated interest in phthalocyanines 1,2 and related compounds. These azaporphyrin systems are considered as targets in materials science not only because of their unique physical and chemical properties, such as chemical versatility, thermal stability, 3 semiconductor behaviour 1 and intense nonlinear-optical responses, [4][5][6][7] but also because of their intrinsic capability to self-assemble providing supramolecular devices. [8][9][10][11][12] Most of the specific properties of phthalocyanine-like compounds are founded on the aromatic character, the p-electron distribution and the macrocyclic skeleton structure of the Pc-core.…”

“…These unsymmetrical macrocycles have shown comparable properties with phthalocyanines; they are able to be organised in Langmuir-Blodgett films 31,32 and have shown liquid-crystal behaviour, 33 high conductivity measurements, 34 important second and third non-linear optical properties, 35 and high thermal stability. 3 Previous Tpc theoretical studies have been reported on the metal free triazolephthalocyanine. 36 The geometry optimization that was carried out using a semiempirical AM1 method showed that the macrocycle should be visualised as an 18 p-carbon-nitrogen macrocycle with peripheral N-N and benzene moieties.…”