New Perylene-Substituted Organotrialkynyltin Compounds for the Photosensitization of Tin Dioxide
作者:G. Vilaça、K. Barathieu、B. Jousseaume、T. Toupance、H. Allouchi
DOI:10.1021/om030478m
日期:2003.10.1
New perylene-substituted organotrialkynyltins C10H20SP-Sn(CdropCC(4)H(9))(3) (1; SP = -C4H8-, -C6H12-, -CH=CH-) have been synthesized in two steps from the tricyclohexyltin analogues in fair to high yields (30-90%). Tricyclohexyltin derivatives were prepared in 50% yields either by coupling of 3-perylenyllithium with a (omega-iodoalkyl)tricyclohexyltin or by hydrostannation of 3-ethynylperylene by tricyclohexyltin hydride. Intermolecular pi-pi contacts between the perylene units were found in the solid-state structure of 3-(4(tricyclohexylstannyl)butyl)perylene. The presence of a (tricyclohexylstannyl)- or a (trialkynylstannyl)alkyl substituent does not affect the fluorescence emission properties of the perylene core, whereas an omega-(trichlorostannyl)alkyl or a 2-stannylethynyl group does. Molecules 1 are dye precursors for the photosensitization of nanocrystalline tin dioxide materials.