Cyclic transformation in shape and crystal structure of C60 microcrystals

Morphology Control of Nanocrystallized C60 Thin Films Prepared by Poor Solvent Immersion

“…A nanocrystallized C 60 thin film recrystallized by 2-propanol shows diffraction peaks at 2θ = 10.4, 17.6, 20.7, which is consistent with an XRD pattern of as-deposited C 60 thin film and corresponds to a typical face-centered cubic (fcc) C 60 crystal structure [21]. The other film, recrystallized by 1-propanol instead of 2-propanol, clearly exhibits a diffraction peak at 2θ = 19.2, which is not detected for the as-deposited C 60 film.…”

“…This suggests 1-propanol forms a different crystal structure to the FCC structure of a nanocrystallized C60 thin film prepared by 2-propanol. Our previous study on C60 fine crystals prepared by the reprecipitation method found that C60 interacts and cocrystallizes with various solvents, resulting in the formation of solvated crystals that incorporate the solvent [21]. Moreover, studying the phase transformation of C60 fine crystals and the associated change of their shapes induced by the exchanging of incorporated solvents revealed that the solvated crystals had a hexagonal crystal structure [22].…”

Synthesis and properties of bis(pyrrolidino)fullerenes bridged by a flexible alkyl-tether

“…In addition, different regular microcrystals were obtained by the solvent, ultrasound and temperature assisted selfassembly of the fullerene C 60 itself. 33,34 Therefore, an initial investigation of morphology of synthesized fullerene derivatives seemed reasonable both from the point of their more detailed characterization and potential application. To that purpose, the samples prepared by slow evaporation of the solvent ('drop drying' method 35 ) at room temperature under toluene atmosphere were subjected to scanning electron microscopy (SEM) analysis.…”

A Facile PDMS‐Assisted Crystallization for the Crystal‐Engineering of C60 Single‐Crystal Organic Field‐Effect Transistors

“…At a smaller length scale, solvents show significant influences on the lattice structure of C 60 . The powder XRD patterns in Figure S3 (Supporting Information) indicate that C 60 s pack into a solvent‐free fcc lattice when crystallized from ODCB, but when crystallized from m ‐xylene and CS 2 , part of the C 60 s were packed into a solvated hexagonal lattice and a solvated monoclinic lattice with expanded lattice dimensions . The lattice parameters of the hexagonal lattice are a = b = 23.39 Å, c = 10.9 Å, α = β = 90°, γ = 120°, and those for the monoclinic lattice are a = 9.87 Å, b = 25.466 Å, c = 24.671 Å, α = 90°, β = 90.047°, γ = 90°.…”