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Herein, we firstly utilized H2@C60 to monitor the supramolecular interaction between a pH-driven resorcin[4]arene molecular tweezer and C60 with a notable 1H NMR chemical shift change (ca. 0.34 ppm). This work provides a new strategy for detecting weak or complex supramolecular interactions. [ABSTRACT FROM AUTHOR]

Herein, we firstly utilized H2@C60 to monitor the supramolecular interaction between a pH-driven resorcin[4]arene molecular tweezer and C60 with a notable 1H NMR chemical shift change (ca. 0.34 ppm). This work provides a new strategy for detecting weak or complex supramolecular interactions. [ABSTRACT FROM AUTHOR]

In the past decade, triboelectric nanogenerators (TENGs) have attracted significant attention across various fields due to their compact size, light weight, high output voltage, versatile shapes, and strong compatibility. However, substantial wear at solid–solid contact interfaces presents a major obstacle to the electrical output stability of TENGs. The objective of this study is to investigate the output performances of TENGs lubricated with TiO2-doped oleic acid. The results suggest that the triboelectrical performances of the polyimide (PI) film sliding against a steel ball under 0.1 wt% TiO2-doped oleic acid are significantly improved compared to those under dry conditions; the growth rates are 35.2%, 103.6, and 85.6%, respectively. Moreover, the coefficient of friction dropped from 0.31 to 0.066. The wear and performance enhancement mechanism are also analyzed. This study provides an effective approach to improve both the electrical performances and tribological behaviors. [ABSTRACT FROM AUTHOR]

Environmentally stable novel flexible bisperylene resorcin[4]arene molecular switch cavitand B and the corresponding rigid cavitand A were synthesized and a single crystal was obtained. Spectroscopic analysis revealed the formation of an excimer of perylene within the cavitand. The presence of flexible chains in cavitand B confers a high degree of environmental stability, rendering its fluorescence unaffected by external factors such as pH and temperature variations. In contrast, the rigid cavitand A exhibits heightened sensitivity to changes in environmental conditions.

Herein, we firstly utilized H 2 @C 60 to monitor the supramolecular interaction between a pH-driven resorcin[4]arene molecular tweezer and C 60 with a notable 1 H NMR chemical shift change ( ca. 0.34 ppm). This work provides a new strategy for detecting weak or complex supramolecular interactions.