Endo vs Exo Bowl: Complexation of Xanthone by Pyrogallol[4]arenes
作者:Constance R. Pfeiffer、Drew A. Fowler、Jerry L. Atwood
DOI:10.1021/cg500794w
日期:2014.8.6
Cocrystal systems containing pyrogallol[4]arene, xanthone, and solvent molecules are examined and discussed. Three types of pyrogallol[4]arenes are cocrystallized with xanthone in isopropanol, acetonitrile, dimethyl sulfoxide, and a mixture of isopropanol and methanol. It is found that the solvent controls complexation of the xanthone molecule, whereas pyrogallol[4]arene tail length affects cocrystal
Investigating Properties and Trends of Cocrystals Composed of Pyrogallol[4]arenes and Anthracene-Based Fluorescent Probes
作者:Constance R. Pfeiffer、Stuart G. Atwood、Luca Samadello、Jerry L. Atwood
DOI:10.1021/acs.cgd.5b00385
日期:2015.6.3
Cocrystals composed of various pyrogallol[4]arenes of different tail lengths with anthracene-based probes in a series of solvent systems are analyzed and compared with the aim to determine the effects of solvent, tail length, and functionality of the probe. The five main characteristics that are influenced are the bowl shape of the pyrogallol[4]arene, complexation of the probe molecule, the C–H···π interactions, the overall hydrogen bonding scheme, and the final ratio of probe to pyrogallol[4]arene. With modifications to the probe molecules, the characteristics most influenced are the bowl shape of the pyrogallol[4]arene, the C–H···π interactions, and the hydrogen bond schemes. Alterations in aliphatic tail length affect the complexation of the probe along with the C–H···π interactions and hydrogen bonding scheme. Solvent has an effect on the complexation of the probe, the final ratio of probe to pyrogallol[4]arene, the bowl shape of the pyrogallol[4]arene, and the hydrogen bonding schemes. Emerging trends due to these modifications are examined and discussed.
Illuminating host–guest cocrystallization between pyrogallol[4]arenes and the ionic liquid 1-ethyl-3-methylimidazolium ethylsulfate
作者:Drew A. Fowler、Constance R. Pfeiffer、Simon J. Teat、Christine M. Beavers、Gary A. Baker、Jerry L. Atwood
DOI:10.1039/c4ce00359d
日期:——
The host–guestcomplexes of seven unique cocrystals containing pyrogallol[4]arenes and the ionic liquid 1-ethyl-3-methylimidazolium ethylsulfate are fully described. The investigation of these cocrystals is directed at expanding the control of the solid-state structures of these unique host–guest assemblies. The effects of varying conditions such as solvent choice and aliphatic tail length appended
Effect of structural preorganization on the reactivity of carbazoylmethyl derivatives of pyrogallol and calix[4]pyrogallol
作者:T. N. Pashirova、M. V. Leonova、S. N. Podyachev、S. N. Sudakova、L. Ya. Zakharova、L. A. Kudryavtseva、A. I. Konovalov
DOI:10.1007/s11172-007-0381-9
日期:2007.12
The aggregation behavior of carbazoylmethyl derivatives of pyrogallol and calix[4]pyrogallol was studied by conductometry and dynamic light scattering in water-DMF media. The formation of mixed nanoaggregates in the presence of cationic surfactants was revealed. The effect of structural preorganization of these compounds on their reactivity in the acylation by 4-nitrophenylacetate and the catalytic