The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Highly Fluorescent Crystalline and Liquid Crystalline Columnar Phases of Pyrene-Based Structures
Open accessAbstract
A concept for highly ordered solid-state structures with bright fluorescence is proposed: liquid crystals based on tetraethynylpyrene chromophores, where the rigid core is functionalized with flexible, promesogenic alkoxy chains. The synthesis of this novel material is presented. The thermotropic properties are studied by means of differential scanning calorimetry (DSC), cross-polarized optical microscopy (POM), and X-ray diffraction. The mesogen possesses an enantiotropic Col(h) phase over a large temperature range before clearing. The material is highly fluorescent in solution and, most remarkably, in the condensed state, with a broad, strongly red shifted emission. Fluorescence quantum yields (Phi(F)) have been determined to be 70% in dichloromethane solution and 62% in the solid state. Concentration- and temperature-dependent absorption and emission studies as well as quantum-chemical calculations on isolated molecules and dimers are used to clarify the type of intermolecular interactions present as well as their influence on the fluorescence quantum yield and spectral properties of the material. The high luminescence efficiency in the solid state is ascribed to rotated chromophores, leading to an optically allowed lowest optical transition.
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Citations
Cites
Warshel, A., & Huler, E. (1974) · Chemical Physics · doi:10.1016/0301-0104(74)85030-5 · Cited by 88
Cited by
Discotic Liquid Crystals for Opto-Electronic Applications
Kaafarani, B. R. (2011) · Chemistry of Materials · doi:10.1021/cm102117c · Cited by 513
Metadata
- Authors
- Hayer, A., de Halleux, V., Köhler, A., El-Garoughy, A., Meijer, E. W., Barberá, J., Tant, J., Levin, J., Lehmann, M., Gierschner, J., Cornil, J., & Geerts, Y. H.
- Venue
- The Journal of Physical Chemistry B
- Publisher
- American Chemical Society (ACS)
- Published
- 2006-03-29
- Volume
- 110
- Issue
- 15
- Pages
- 7653-7659
- ISSN
- 1520-5207 (ISSN-L)
- 1520-6106
- OpenAlex
- W2149765511
- Cited by
- 169
- References
- 1
- FWCI
- 7.55
- Type
- journal article
- Language
- en
- Open access
- bronze
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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