Conformational and electronic engineering of twisted diphenylacetylenes.
作者： Glen Brizius , Kelvin Billingsley , Mark D Smith , Uwe HF Bunz , None
DOI: 10.1021/OL035532+
关键词: Chemistry 、 Photochemistry 、 Quantum yield 、 Linker 、 Alkyne metathesis 、 Diphenylacetylene 、 Spectral line 、 Fluorescence 、 Carbon-13 NMR 、 Alkyne
摘要: Three tethered diphenylacetylene derivatives were prepared by alkyne metathesis. In these cycles, the twist angle between two benzene rings is variable and determined nature of linker. The engineering leads to a change UV−vis spectra cycles. larger in macrocycles, more blue shifted their λmax (UV−vis), lower fluorescence quantum yield, field 13C NMR signals carbons are.
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