Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 5, Issue 24, Pages 6030-6036Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7tc01371j
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Funding
- National Natural Science Foundation of China [21674046, 21474048, 51673093]
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Herein, two pairs of chiral 1,8-naphthalimide-based enantiomers incorporating D/L-alanine and pyrene fluorophore moieties were designed and synthesized. The fluorescence emission gradually changes from bright-yellow to red when the fraction of the poor solvent methanol increases from 0 to 99 vol%. No obvious circular dichroism (CD) and circularly polarized luminescence (CPL) signals could be observed in the CHCl3 solution. Interestingly, D/L-1 can exhibit a stronger red-colored CPL response signal as compared to D/L-2 at f(m) = 99% in the aggregate state; this is due to the formation of regular and orderly self-assembled nanonetworks in the aggregate state via intermolecular pi-pi interactions. Moreover, the optical anisotropy factor (g(lum)) could reach a value as high as 0.013.
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