L-Tartaric acid assisted binary organogel system: strongly enhanced fluorescence induced by supramolecular assembly.
A new series of binary organogels, which showed good gelated capability and strongly enhanced fluorescence emission, were designed and prepared by simply mixing two components of L-tartaric acid and alkoxyl substituted stilbazoles. It was found that L-tartaric acid could not only introduce stilbazole with fluorescent property into the gel system, but also provided a main motif for the formation of the gel-phase via multiple hydrogen bonds. Meanwhile, pi-pi interactions between the complexes also played a key role in the gel formation. The decreased nonradiative process, suggested by the longer fluorescent lifetime of aggregates than that of monomers and the presence of the J-aggregation for the aggregated state, favored the enhanced fluorescence emission.
College of Chemistry, Jilin University, 2519 Jiefang Road, Changchun 130023, PR China.
Chunyan
C
Bao
Ran
R
Lu
Ming
M
Jin
Pengchong
P
Xue
Changhui
C
Tan
Guofa
G
Liu
Yingying
Y
Zhao
D005453:Fluorescence; D005782:Gels / Q000737:chemistry; D006860:Hydrogen Bonding; D046911:Macromolecular Substances / Q000737:chemistry; D015394:Molecular Structure; D011725:Pyridines / Q000737:chemistry* / Q000378:metabolism; D013050:Spectrometry, Fluorescence; D017550:Spectroscopy, Fourier Transform Infrared; D013343:Styrenes / Q000737:chemistry* / Q000378:metabolism; D013644:Tartrates / Q000737:chemistry* / Q000378:metabolism
D005782:Gels; D046911:Macromolecular Substances; D011725:Pyridines; D013343:Styrenes; D013644:Tartrates; C003347:4-stilbazole; C029768:tartaric acid