Journal
LANGMUIR
Volume 31, Issue 17, Pages 4916-4923Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.5b00275
Keywords
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Funding
- National Natural Science Foundation of China [21202133, 21174114, 21361023]
- Key Laboratory of Eco-Environment-Related Polymer Materials (Northwest Normal University)
- Ministry of Education Scholars Innovation Team [IRT 1177]
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A new class of rigid low-molecular-mass organic gelators (LMOGs) was synthesized by McMurry and Heck reactions, and their gels and photophysical properties were investigated. The LMOGs lacked alkyl chain and H-bonding units and produced good gelation ability in selected mixed organic solvents facilitated by cooperative pi-pi stacking and C=O center dot center dot center dot pi interactions. Sensitive gel-sol transformation by molecular aggregation and disaggregation was easily achieved upon heating and cooling. H-H 2D NOESY and X-ray diffraction (XRD) patterns showed the pi-pi stacking and C=O center dot center dot center dot pi interactions between tiny methyl acrylate groups as tails. Importantly, this soft interaction model offers a useful tool for the future design and construction of supramolecular structures. At present, the LMOGs reported herein offer a sensitive gel-formation ability and aggregation-induced emission (AIE) property and thus have promising application potentials as functional soft matter in amorphous materials, photoelectric materials, and so on.
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