A procedure for filling calixarene nanotubes

Sgarlata, Valentina; Organo, Voltaire G.; Rudkevich, Dmitry M.

doi:10.1039/b509299j

Cited by 26 publications

(14 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[16] In short, addition of tert-butyl nitrite to solutions of tetrakis(O-n-hexyloxy)calix[4]arene in CDCl 3 or nanotubes 1 and 2 in (CDCl 2 ) 2 in the presence of an excess of SnCl 4 or trifluoroacetic acid (TFA) led to rapid, quantitative formation of the corresponding calixarene-NO + complexes. These were identified by means of NMR, FTIR, and UV/Vis spectra, which showed features similar to those of the previously described 3 , filled with the help of NO 2 / N 2 O 4 .…”

Section: ) Complexation Of Nomentioning

confidence: 99%

See 1 more Smart Citation

Long Synthetic Nanotubes from Calix[4]arenes

Organo

Sgarlata

Firouzbakht

et al. 2007

Chemistry A European J

Self Cite

View full text Add to dashboard Cite

We report the synthesis and encapsulation properties of long (up to 5 nm) molecular nanotubes 1-4, which are based on calix[4]arenes and can be filled with multiple nitrosonium (NO(+)) ions upon reaction with NO(2)/N(2)O(4) gases. These are among the largest nanoscale molecular containers prepared to date and can entrap up to five guests. The structure and properties of tubular complexes 1(NO(+))(2)-4(NO(+))(5) were studied by UV/Vis, FTIR, and (1)H NMR spectroscopy in solution, and also by molecular modeling. Entrapment of NO(+) in 1(NO(+))(2)-4(NO(+))(5) is reversible, and addition of [18]crown-6 quickly recovers starting tubes 1-4. The FTIR and titration data revealed enhanced binding of NO(+) in longer tubes, which may be due to cooperativity. The described nanotubes may serve as materials for storing and converting NO(x) and also offer a promise to further develop supramolecular chemistry of molecular containers. These findings also open wider perspectives towards applications of synthetic nanotubes as alternatives to carbon nanotubes.

show abstract

Section: ) Complexation Of Nomentioning

confidence: 99%

“…[16] Alkyl nitrites are known as effective NO donors in medicine and they also act as nitrosating reagents. [17] We now report that NO + can be quantitatively transferred from alkyl nitrites into calixarene nanotubes 1-4.…”

Section: ) Complexation Of Nomentioning

confidence: 99%

Long Synthetic Nanotubes from Calix[4]arenes

Organo

Sgarlata

Firouzbakht

et al. 2007

Chemistry A European J

Self Cite

View full text Add to dashboard Cite

show abstract

“…These features were used in the design of calixarene-based nanotubes (45, Fig. 19) (81)(82)(83). In the nanotubes, 1,3-alternate calix[4]arenes are rigidly connected from both sides of their rims with pairs of diethylene glycol linkers.…”

Section: Synthetic Nanotubes and No X Gasesmentioning

confidence: 99%

Supramolecular Chemistry of Gases

Rudkevich

2007

Progress in Inorganic Chemistry

Self Cite

View full text Add to dashboard Cite

“…The review does not cover works concerning various types of capsules [15,16] nor tubes [17,18] formed from calixarenes. The review does not cover works concerning various types of capsules [15,16] nor tubes [17,18] formed from calixarenes.…”

Section: Introductionmentioning

confidence: 99%