Design and understanding of solid-state and crystalline materials
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Communication
CrystEngComm, 2009, 11, 2268 - 2271, DOI: 10.1039/b910263a
An enhanced fluorescence in a tunable face-to-face
stacking assembly directed by the H-bondingXiao-Fei Fu, Yan-Feng Yue, Rui Guo, Le-Le Li, Wei Sun, Chen-Jie Fang, Chun-Hu Xu and Chun-Hua Yan
A simple anthryl derivative 1-((anthracen-10-yl)methylene)-4-ethylthiosemicarbazide (ANS) shows a methanol-tunable solid state fluorescence enhancement based on different molecular packing structure; the emission is stronger in crystal 2 than that in crystal 1 under the same condition. This is mainly due to the formation of face-to-face
stacking assembly in crystal 2 which is directed and enhanced by intermolecular H-bonding interactions. The observation of fluorescence decay corroborates the formation of an emissive excimer in the stacking assembly.
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