Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 124, Issue 14, Pages 7965-7972Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.0c02402
Keywords
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Funding
- Qilu Young Scholarship Funding of Shandong University
- National Natural Science Foundation of China [21872087, 21901145]
- Natural Science Foundation of Jiangsu Province [BK20190209]
- Youth cross-scientific innovation group of Shandong University [2020QNQT003]
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Rational manipulation of circularly polarized luminescence (CPL) properties is challenging in single component self-assembled systems. In this work we present a protocol to precisely tailor the CPL properties including handedness, dissymmetry factor (g(lum)), and wavelength of single component self-assemblies. A library of cholesteryl naphthalimides was built up with varied spacer and side arm groups. In aqueous media, building units self-assembled into vesicles with right-handed CPL, of which g(lum) values were at 10(-3) grade. Specifically, organogels were given in apolar solvent decane with excellent mechanical strength. The entangled gel networks possessed greatly enhanced g(lum) values at 10(-2) magnitude order, and CPL handedness was inverted to the left. In the presence of a small amount of water (1 vol %), crystalline precipitates were generated instead of original organogels, which further inverted CPL handedness to the right with diminished g(lum) values. The present solvent-polarity ultrasensitive property offers alternative thought to rationally enhance CPL with fine tailored handedness and wavelength in supramolecular systems.
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