𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Synthesis and Characterization of Crown-Ether-Containing Phthalocyanines with Group-IV-A Elements

✍ Scribed by Vefa Ahsen; Emel Yilmazer; Ayşegül Gürek; Ahmet Gül; Özer Bekâroǧlu

Publisher
John Wiley and Sons
Year
1988
Tongue
German
Weight
367 KB
Volume
71
Category
Article
ISSN
0018-019X

No coin nor oath required. For personal study only.

✦ Synopsis

Group-TV-A phthalocyanines with four crown ether substituents have been prepared from 4,s'-dicyanobenzo( IS-crown-S), 4,S'-diiminoisoindolino( 15-crown-S), or metal-free phthalocyanine and the corresponding metal salts. The axial ligands of dichloro[tetra( 1 5-crown-5)phthalocyaninato]silicon or -tin have been converted into dihydroxy derivatives by hydrolysis in aqueous Et,N. The catalytic effect of H20-free CaCI, in quinoline is used for the polycondensation of dihydroxysilicon-phthalocyanine to cofacially arrayed polymers. The thermal stability of group-IV-A-metal phthalocyanines is confirmed by the higher initial decomposition points (29M40") compared to those of the corresponding transition-metal phthalocyanines.

📜 SIMILAR VOLUMES

Synthesis and characterization of sandwi
Synthesis and characterization of sandwich-type gadolinium and ytterbium crown ether-substituted phthalocyanines
✍ Ludmila A. Lapkina; Elina Niskanen; Hannu RÖnkkÖmÄki; Vladimir E. Larchenko; Kon 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 43 KB 👁 1 views

An original method based on metal-free ligand and lanthanide acetate direct interaction in the presence of a strong organic base (DBU) is used to prepare sandwich-type gadolinium and ytterbium crown-ether substituted phthalocyanines bis[4,5,4′,5′,4″,5″,4‴,5‴-tetrakis(1,4,7,10,13-pentaoxatridecamethy

Synthesis and aggregation behaviour of p
Synthesis and aggregation behaviour of phthalocyanines substituted with flexible crown ether
✍ I. Gürol; V. Ahsen 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 78 KB 👁 1 views

The synthesis of metal-free and metallo derivatives ( Ni , Zn ) of tetrasubstituted phthalocyanines (Pcs) obtained from 4-[methyleneoxy(15-crown-5)]phthalonitrile is described. The new compounds have been characterized by elemental analyses, IR, ^1^ H and ^13^ C NMR , MS and UV-vis. The thermal stab

Synthesis and Thermal Characterization o
Synthesis and Thermal Characterization of Perfluorocyclobutyl (PFCB) Polymers Containing Crown Ether Vertebrae
✍ S. Clark Ligon Jr.; Chris M. Topping; Jianyong Jin; Stephen Fallis; Jennifer A. 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 102 KB

## Abstract **Summary:** The synthesis and polymerization of novel 18‐crown‐6 and 24‐crown‐8 bis aryl trifluorovinyl ethers is described. Thermally induced polymerization yields linear crown ether fluoropolymers with hexafluorocyclobutyl linkages. The polymers exhibit __T__~g~'s above 120 °C and sh