Hydrolytic products of diphthalimidodiethylamine and temperature independent sensitized luminescence of their lanthanide(III) complexes

被引:13
作者
Barrett, DMY
Kahwa, IA [1 ]
Raduchel, B
White, AJP
Williams, DJ
机构
[1] Univ W Indies, Dept Chem, Kingston 7, Jamaica
[2] Forschung Kontrastmittel Kernspinomog Chem, Schering Aktiengesell Diagnost, D-13342 Berlin, Germany
[3] Univ London Imperial Coll Sci Technol & Med, Dept Chem, Chem Crystallog Lab, London SW7 2AY, England
来源
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2 | 1998年 / 09期
关键词
D O I
10.1039/a804356f
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Syntheses and structural and luminescence studies of hydrolytic products of diphthalimidodiethylamine (DPDA) and their lanthanide(III) compounds have been undertaken in order to determine the potential for the phthalamate functionality to sensitize intense Eu3+ and Tb3+ emission via the (antenna effect). Acid promoted hydrolysis of the relatively simple DPDA is efficient; hydrolysis is negligible at pH > 11. At pH 2-3, hydrolysis to phthalic acid (1) occurs which upon interaction with DPDA yields the phthalic acid-DPDA supramolecular hydrate, DPDAH-HP . 1.75H(2)O. With a potassium carbonate-ethanol-acetonitrile mixture containing a small amount of water, the novel phthalamate-phthalimide H2 . H2O is formed while at pH ca. 9-10 the new diphthalamate Na(2)3 . 3H(2)O is formed. These transformations have been formed by single crystal X-ray analyses of DPDAH-HP . 1.75H(2)O and H2 . H2O. The crystal structures of DPDAH-HP . 1.75H(2)O and H2 . H2O reveal that the phthalamates and phthalimides are stabilized by non-covalent (e.g. pi-pi stacking and hydrogen bonding) interactions which are of interest as potential conduits for energy transfer and are responsible for molecular aggregations seen in FAB mass spectrometry of H2 . H2O and Na2(3). H2O. Europium(III) compounds of 3(2-) and H2 exhibit intense sensitized red emission which is, surprisingly, temperature independent.
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页码:1851 / 1856
页数:6
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