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Cation-induced pesticide binding and release by a functionalized calix[4]arene molecular host.

Luo L, Zhang X, Feng N, Tian D, Deng H, Li H - Sci Rep (2015)

Bottom Line: Ion-controlled switchable progress is very important in many biological behaviors.Here, we reported K(+)-controlled switch, this switch system exhibited excellent carbaryl (G) binding/release by fluorescent (FL), ultraviolet-visible (UV) spectrums and (1)H NMR spectroscopy.More importantly, the K(+)-controlled G binding/release switch based on C4C5 not only in the solution, but also on the surface, promising for the application for the pesticide controlled release.

View Article: PubMed Central - PubMed

Affiliation: Key Laboratory of Pesticide and Chemical Biology (CCNU), Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079 (P. R. China).

ABSTRACT
Ion-controlled switchable progress is very important in many biological behaviors. Here, we reported K(+)-controlled switch, this switch system exhibited excellent carbaryl (G) binding/release by fluorescent (FL), ultraviolet-visible (UV) spectrums and (1)H NMR spectroscopy. More importantly, the K(+)-controlled G binding/release switch based on C4C5 not only in the solution, but also on the surface, promising for the application for the pesticide controlled release.

No MeSH data available.


(a) G and C4C5 were mixed, there appeared m/z = 1084.721 in the spectrum, which indicated [C4C5+G] has formed. (b) [C4C5+G] was added into KClO4, there has appeared m/z = 921.611 in the spectrum and m/z = 1084.72 was disappeared, which indicated G was released from C4C5 and [C4C5+K+] was formed.
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f4: (a) G and C4C5 were mixed, there appeared m/z = 1084.721 in the spectrum, which indicated [C4C5+G] has formed. (b) [C4C5+G] was added into KClO4, there has appeared m/z = 921.611 in the spectrum and m/z = 1084.72 was disappeared, which indicated G was released from C4C5 and [C4C5+K+] was formed.

Mentions: To further verify the binding between C4C5 and G, the ESI-MS analysis was carried out. The peak observed at m/z = 1084.72 in the ESI mass spectrum (Fig. 4a) can be attributed to [C4C5+G] complex. Furthermore, the peak observed at m/z = 921.61 in the ESI mass spectrum (Fig. 4b) can be attributed to [C4C5+K+] complex, we also found m/z = 883.58 in the ESI mass spectrum (Fig. S9) can be attributed to K+ released from C4C5. The whole ESI-MS study fully explained the binding/release process and also confirmed the 1:1 complex formation C4C5 and G, C4C5 and K+.


Cation-induced pesticide binding and release by a functionalized calix[4]arene molecular host.

Luo L, Zhang X, Feng N, Tian D, Deng H, Li H - Sci Rep (2015)

(a) G and C4C5 were mixed, there appeared m/z = 1084.721 in the spectrum, which indicated [C4C5+G] has formed. (b) [C4C5+G] was added into KClO4, there has appeared m/z = 921.611 in the spectrum and m/z = 1084.72 was disappeared, which indicated G was released from C4C5 and [C4C5+K+] was formed.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4355745&req=5

f4: (a) G and C4C5 were mixed, there appeared m/z = 1084.721 in the spectrum, which indicated [C4C5+G] has formed. (b) [C4C5+G] was added into KClO4, there has appeared m/z = 921.611 in the spectrum and m/z = 1084.72 was disappeared, which indicated G was released from C4C5 and [C4C5+K+] was formed.
Mentions: To further verify the binding between C4C5 and G, the ESI-MS analysis was carried out. The peak observed at m/z = 1084.72 in the ESI mass spectrum (Fig. 4a) can be attributed to [C4C5+G] complex. Furthermore, the peak observed at m/z = 921.61 in the ESI mass spectrum (Fig. 4b) can be attributed to [C4C5+K+] complex, we also found m/z = 883.58 in the ESI mass spectrum (Fig. S9) can be attributed to K+ released from C4C5. The whole ESI-MS study fully explained the binding/release process and also confirmed the 1:1 complex formation C4C5 and G, C4C5 and K+.

Bottom Line: Ion-controlled switchable progress is very important in many biological behaviors.Here, we reported K(+)-controlled switch, this switch system exhibited excellent carbaryl (G) binding/release by fluorescent (FL), ultraviolet-visible (UV) spectrums and (1)H NMR spectroscopy.More importantly, the K(+)-controlled G binding/release switch based on C4C5 not only in the solution, but also on the surface, promising for the application for the pesticide controlled release.

View Article: PubMed Central - PubMed

Affiliation: Key Laboratory of Pesticide and Chemical Biology (CCNU), Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079 (P. R. China).

ABSTRACT
Ion-controlled switchable progress is very important in many biological behaviors. Here, we reported K(+)-controlled switch, this switch system exhibited excellent carbaryl (G) binding/release by fluorescent (FL), ultraviolet-visible (UV) spectrums and (1)H NMR spectroscopy. More importantly, the K(+)-controlled G binding/release switch based on C4C5 not only in the solution, but also on the surface, promising for the application for the pesticide controlled release.

No MeSH data available.