期刊
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
卷 6, 期 9, 页码 982-986出版社
SPRINGERNATURE
DOI: 10.1039/b707750e
关键词
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A series of 9,10-bis(phenylethynyl) anthracenes decorated with sterically demanding tert-butyl substituents have been prepared and spectroscopically characterised. We demonstrate that the introduction of two bulky substituents in the ortho position of the phenyl rings effectively locks the ground state into a conformation in which the three rings are orthogonal. Fluorescence spectroscopy reveals evidence for partial planarisation of this compound in the excited state at ambient temperature, but this is prevented in low temperature solvent glasses.
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