Synthesis of Subphthalocyanine-Based Stopcock for Zeolite L

Abstract

The synthesis and characterization of a subphthalocyanine derivative, bearing a rigid three-phenylene tail on peripheral position, as stopcock for potential selective adsorption to the channel entrances of zeolite L, is described.

Subphthalocyanines, Subporphyrazines, and Subporphyrins: Singular Nonplanar Aromatic Systems

“…The most commonly employed method for the functionalization of SubPcs is to replace the original axial Cl or Br atom by alcohols to yield the corresponding boronic esters. It is generally acknowledged that phenols [see refs , , , , − , − , − , , , , , , − , , , , , , , , , and − ] and carboxylic acids , react more efficiently than water or alkyl alcohols, ,,,,,,,,, despite their lower nucleophilicity, which suggests the assistance of relatively acidic protons in the weakening of the B–X bond.…”

“…The accessibility of arrays of silica nanochannels has been indirectly measured by confocal laser scanning microscopy with the help of photoluminescent SubPc probes containing p -terphenyl group, such as 98 and 99 (Figure ). , Meso - and nanoporous silica host materials have demonstrated application in various fields, including drug delivery and catalysis . Pore size distribution in these materials is traditionally measured from nitrogen sorption data, but the use of adsorpted fluorescent probes can provide useful complementary information about the actual accessibility of the pores .…”