| 英文摘要 |
Amines are an important class of molecules that are ubiquitous in biology, pharmaceuticals, and industry. Because someamines may be harmful to human health, there is a need for sensitive and selective detection of amines in the fields of publichealth, food safety, and environmental monitoring. This study synthesized bis-cholesteryl appended curcumin (BCC) fromcurcumin and cholesteryl chloroformate. When BCC was added to various solvents, it was found that it only formed a gel withethylenediamine (EDA), indicating that BCC is highly selective in the detection of EDA. The gelation properties of BCC withamines was further investigated under ultrasonic stimulation and explored for amines with different chain lengths. SEM analysisshowed that the BCC-EDA molecules self-assembled into dense fibers. It was inferred that the secondary forces among themolecules, such as van der Waals force, polar attraction, and p-p stacking, played an important role in gelation. Based on thisevidence, a self-assembly mechanism for gel formation was proposed. The color of BCC also changed from bright yellow to deepred depending on the EDA concentrations used. These results indicate that BCC features dual-detection characteristics withregard to EDA. |
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