Synthesis and EPR studies of the first water-soluble N@C₆₀ derivative

Abstract

The first water-soluble derivative of the paramagnetic endohedral fullerene N@C has been prepared through the covalent attachment of a single addend containing two permethylated β-cyclodextrin units to the surface of the carbon cage. The line width of the derivative's EPR signal is highly sensitive to both the nature of the solvent and the presence of Cu(ii) ions in solution.

Single-Molecule Fullerenes: Current Stage and Perspective

“…133−139 In combination with single-molecule devices, these fullerenes hold promise for a variety of quantum spin applications, including quantum computing, 140,141 atomic clock, 142 and quantum metrology and sensing. 33,143 The atoms/clusters encapsulated in the carbon cages are good samples to study the unusual valence states, 144 confined interactions and motions. 145−149 The atoms/clusters encapsulated in the carbon cages are good samples to study the unusual valence states, 144 as well as confined interactions and motions.…”

“…Third, new principles and applications based on the properties of fullerenes should be explored. In recent years, a large number of endohedral fullerenes encapsulating magnetic atoms have been studied as single-molecule magnets. − The fullerene cage can significantly reduce the relaxation processes associated with environmental fluctuations, and the carbonaceous elemental composition can effectively preserve spin coherence due to the zero nuclear spin of 12 C, leading to the emergence of quantum states with long spin coherence. − In combination with single-molecule devices, these fullerenes hold promise for a variety of quantum spin applications, including quantum computing, , atomic clock, and quantum metrology and sensing. , The atoms/clusters encapsulated in the carbon cages are good samples to study the unusual valence states, confined interactions and motions. − The atoms/clusters encapsulated in the carbon cages are good samples to study the unusual valence states, as well as confined interactions and motions. − These will greatly expand the application prospects of fullerenes and single-molecule devices.…”

Implementation of Quantum Level Addressability and Geometric Phase Manipulation in Aligned Endohedral Fullerene Qudits

“…Evidenced by the electron spin properties of N@C 60,70 , [2] Sc@C 82 , Y@C 82 , La@C 82 , [3, 4] etc., the structure essentially extends the coherence time, as it diminishes the relaxation processes related to fluctuations of environment. Moreover, the carbonaceous elemental composition can effectively sustain the spin coherence due to the zero nuclear spin of the 12 C. As a result, some electron‐spin‐based quantum applications, including molecular quantum computing, [5, 6] molecular atomic clocks, [7] and quantum metrology and sensing, [8, 9] have been proposed.…”

Implementation of Quantum Level Addressability and Geometric Phase Manipulation in Aligned Endohedral Fullerene Qudits

“…[1] Evidenced by the electron spin properties of N@C 60,70 , [2] Sc@C 82 , Y@C 82 , La@C 82 , [3,4] etc., the structure essentially extends the coherence time, as it diminishes the relaxation processes related to fluctuations of environment. Moreover, the carbonaceous elemental composition can effectively sustain the spin coherence due to the zero nuclear spin of the 12 C. As a result, some electron-spin-based quantum applications, including molecular quantum computing, [5,6] molecular atomic clocks, [7] and quantum metrology and sensing, [8,9] have been proposed.…”