Single‐Walled Carbon Nanotubes Encapsulated within Metallacycles

Abstract

Mechanically interlocked derivatives of carbon nanotubes (MINTs) are interesting nanotube products since they show high stability without altering the carbon nanotube structure. So far, MINTs have been synthesized using ring‐closing metathesis, disulfide exchange reaction, H‐bonding or direct threading with macrocycles. Here, we describe the encapsulation of single‐walled carbon nanotubes within a palladium‐based metallosquare. The formation of MINTs was confirmed by a variety of techniques, including high‐resolution transmission electron microscopy. We find the making of these MINTs is remarkably sensitive to structural variations of the metallo‐assemblies. When a metallosquare with a cavity of appropriate shape and size is used, the formation of the MINT proceeds successfully by both templated clipping and direct threading. Our studies also show indications on how supramolecular coordination complexes can help expand the potential applications of MINTs.

Automated statistical analysis of Raman spectra of nanomaterials

“…To illustrate the capabilities of the algorithm, we present the results obtained using this tool for the analysis and comparison of mechanically interlocked carbon nanotubes (MINTs) [56][57][58][59][60][61][62][63] and the pristine 6,5-SWNT used for their preparation. In particular, mechanical bonds are used to anchor Cu 2+ metalloporphyrin dimeric rings around carbon nanotubes to form magnetic cooper MINTs (Cu-mMINTs), as reported elsewhere.…”

Mechanically interlocked derivatives of carbon nanotubes: synthesis and potential applications

“…6c and d). 62 In this case, the coordination is based on N-heterocyclic carbene ligands and Pd metal centres. In line with the results reported by the team led by Komatsu, we also found that the formation of MINTs was very sensitive to the size complementarity between the cavity of the macrocycle and the diameter of the SWNT.…”

The Role of Dethreading Process in Pseudorotaxanes and Rotaxanes towards Advanced Applications: Recent Examples

“…Mechanically interlocked molecules (MIMs) are a type of compounds constituted by components which are bonded together through noncovalent interactions, forming a mechanical bond. [1][2][3] Within the range of intertwined compounds, rotaxanes are postulated as ideal candidates for the design of molecular machines, developing applications in a wide range of fields, [4][5][6] such as catalysis, [7][8][9][10][11][12][13][14] materials science [15][16][17][18][19][20][21][22][23][24] or medicinal chemistry. [25][26][27] Usually, the design of these structures seeks the stability of the mechanical bond, thus preventing the dissociation of the different components in order to carry out a specific function.…”