Inside Cover: Molecular Polygons Probe the Role of Intramolecular Strain in the Photophysics of π-Conjugated Chromophores (Angew. Chem. Int. Ed. 5/2017)
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- 作者：Philipp Wilhelm ; Dr. Jan Vogelsang ; Georgiy Poluektov ; Nina Schö ; nfelder ; Tristan J. Keller ; Dr. Stefan-Sven Jester ; Prof. Dr. Sigurd Hö ; ger and Prof. Dr. John M. Lupton
- 刊名：Angewandte Chemie International Edition
- 出版年：2017
- 出版时间：January 24, 2017
- 年：2017
- 卷：56
- 期：5
- 页码：1162
- 全文大小：2337K
- ISSN：1521-3773
文摘
The π-system of conjugated macromolecules can be bent in a controlled fashion by incorporating chromophores in molecular polygon templates. This distortion is clearly seen in scanning-tunneling micrographs of the molecules. In their Communication on page 1234 ff. S. Höger, J. M. Lupton et al. show that bending leads to isotropic polarization in absorption and fluorescence but also affects the elementary photophysics. On the single-molecule level, a correlation emerges between luminescence spectrum and lifetime, which arises from subtle variations in the bending radius between molecules.