期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 135, 期 24, 页码 8842-8845出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja404198h
关键词
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资金
- JST-PRESTO Molecular technology and creation of new functions
- JST-CREST
- Grants-in-Aid for Scientific Research [24750038] Funding Source: KAKEN
We have designed and synthesized a pi-conjugated system that consists of a flexible and nonplanar pi joint and two emissive rigid and planar wings. This molecular system exhibits respectively red, green, and blue (RGB) emission from a single-component luminophore in different environments, namely in polymer matrix, in solution, and in crystals. The flexible unit gives rise to a dynamic conformational change in the excited state from a nonplanar V-shaped structure to a planar structure, leading to a dual fluorescence of blue and green colors. The rigid and planar moieties favor the formation of a two-fold pi-stacked array of the V-shaped molecules in the crystalline state, which produces a red excimer-like emission. These E RGB emissions are attained without changing the excitation energy.
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