作者:Daniel D’Alessio、Alexandre N. Sobolev、Brian W. Skelton、Rebecca O. Fuller、Robert C. Woodward、Nigel A. Lengkeek、Benjamin H. Fraser、Massimiliano Massi、Mark I. Ogden
DOI:10.1021/ja506677h
日期:2014.10.29
Large metal-oxo clusters consistently assume spherical or regular polyhedral morphologies rather than high-aspect-ratio structures. Access to elongated core structures has now been achieved by the reaction of lanthanoid salts with a tetrazole-functionalized calixarene in the presence of a simple carboxylate co-ligand. The resulting Ln(19) and Ln(12) clusters are constructed from apex-fused Ln(5)O(6) trigonal bipyramids and are formed consistently under a range of reaction conditions and reagent ratios. Altering the carboxylate co-ligand structure reliably controls the cluster length, giving access to a new class of rod-like clusters of variable length.
Luminescent lanthanoid complexes of a tetrazole-functionalised calix[4]arene
作者:Daniel D'Alessio、Sara Muzzioli、Brian W. Skelton、Stefano Stagni、Massimiliano Massi、Mark I. Ogden
DOI:10.1039/c2dt12246d
日期:——
p-t-Butylcalix[4]arene functionalised at the lower rim with two tetrazole moieties is found to be a useful receptor for lanthanoid cations. The luminescence of the resulting complexes can be controlled by addition of base, with emission achieved in the visible and infrared regions.
Lanthanoid coordination with a tetrazole-substituted calix[4]diquinone and calix[4]dihydroquinone
作者:Lee Cameron、Aswin Rajagopalan、Laura Abad Galan、Rene Z.H. Phe、Brian W. Skelton、Massimiliano Massi、Mark I. Ogden
DOI:10.1080/10610278.2019.1625357
日期:2019.7.3
ABSTRACT The tetrazole-functionalised calixdiquinone 5,17-di-tert-butyl-26,28-bis-(1H-tetrazole-5-ylmethoxy)-calix[4]-25,27-diquinone Q was synthesised by chemical oxidation of the bis-tetrazole calix[4]arene precursor using PbO2/HClO4. The single crystal X-ray structure determination of Q confirmed the structure and showed binding of a water molecule in the solid state. Chemical reduction of Q to
摘要 四唑官能化的杯二醌 5,17-二叔丁基-26,28-双-(1H-四唑-5-基甲氧基)-杯[4]-25,27-二醌 Q 是通过化学氧化合成的使用 PbO2/HClO4 制备双四唑杯 [4] 芳烃前体。Q 的单晶 X 射线结构测定证实了结构,并显示出固态水分子的结合。使用 N,N-二乙基羟胺将 Q 化学还原为二氢醌 QR。在铽离子存在下,Q 或 QR 的溶液相光物理特性的比较显示仅用 QR 显着激发,这表明光物理响应的氧化还原转换可能使用这种或类似的受体。图形概要