Synthesis and growth mechanism of differently shaped C60 nano/microcrystals produced by evaporation of various aromatic C60 solutions

Yao, Mingguang; Andersson, Britt M.; Stenmark, Patrik; Sundqvist, Bertil; Liu, Bingbing; Wågberg, Thomas

doi:10.1016/j.carbon.2009.01.010

Cited by 78 publications

(99 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Solvated C 60 single crystals were prepared on a glass substrate by evaporating a saturated C 60 /m-xylene solution at room temperature. [15,16] The as-prepared samples contain solvent and have a hexagonal structure (P63, a = b = 2.37 nm and c = 1.012 nm). The solvent was removed by heating samples at 150 o C under vacuum, transforming it into a FCC structure (here called desolvated sample).…”

mentioning

confidence: 99%

Pressure-induced transformation and superhard phase in fullerenes: The effect of solvent intercalation

Yao

Cui

Xiao

et al. 2013

Applied Physics Letters

Self Cite

View full text Add to dashboard Cite

Pressure-induced transformation and superhard phase in fullerenes: the effect of solvent intercalation.Applied Physics Letters, 103 (7) Abstract:We studied the behavior of solvated and desolvated C 60 crystals under pressure by in situ Raman spectroscopy. The pressure-induced bonding change and structural transformation of C 60 s are similar in the two samples, both undergoing deformation and amorphization.Nevertheless, the high pressure phases of solvated C 60 can indent diamond anvils while that of desolvated C 60 s cannot. Further experiments suggest that the solvents in the solvated C 60 act as both spacers and bridges by forming covalent bonds with neighbors in 3D network at high pressure, and thus, a fraction of fullerenes may preserve the periodic arrangement in spite of their amorphization.

show abstract

mentioning

confidence: 99%

Pressure-induced transformation and superhard phase in fullerenes: The effect of solvent intercalation

Yao

Cui

Xiao

et al. 2013

Applied Physics Letters

Self Cite

View full text Add to dashboard Cite

show abstract

“…4 Previous research had unveiled a number of solution-processed schemes to control the morphological features of various fullerene species through liquid-liquid interfacial precipitation, 5,6 template assisted dip drying, 7 solvent-induced self-assembly method, 8,9 and drop drying process. 5,[10][11][12][13] Aqueous colloidal dispersions of fullerene aggregate can also be produced through solvent exchange process or extended mixing in water. [14][15][16] The success of these schemes, invariably, must rely on good knowledge about the aggregation properties in the solvent medium and processing scheme utilized, as reflected in the recent findings outlined below.…”

Section: Introductionmentioning

confidence: 99%

Mesoscale aggregation properties of C₆₀ in toluene and chlorobenzene

et al. 2016

View full text Add to dashboard Cite

The mesoscale aggregation properties of C60 in two distinct aromatic solvents (toluene and chlorobenzene) and a practical range of concentrations (c = 1-2 and c = 1-5 mg mL(-1), respectively) were systematically explored by static/dynamic light scattering (SLS/DLS), small angle X-ray scattering (SAXS), depolarized dynamic light scattering (DDLS), and cryogenic transmission electron microscopy (cryo-TEM) analyses. The central observations were as follows: (1) aggregate species of sizes in the range of several hundred nanometers have been independently revealed by SLS, DLS, and DDLS analyses for both solvent systems. (2) DDLS and cryo-TEM measurements further revealed that while C60 clusters are notably anisotropic (rod-like) in chlorobenzene, they are basically isotropic (spherical) in toluene. (3) Detailed analyses of combined SLS and SAXS profiles suggested that varied, yet self-similar, solvent-induced aggregate units were responsible for the distinct (mesoscale) aggregation features noted above. (4) From a dynamic perspective, specially commissioned DLS measurements ubiquitously displayed two relaxation modes (fast and slow mode), with the second (slow) mode being q (wave vector) independent. While the fast mode in both solvent systems was basically diffusive by nature and leads to geometrical features in good agreement with the above static analyses, the slow mode was analyzed and tentatively suggested to reflect the effect of mutual confinement. (5) Micron-scale aggregate morphology of drop-cast thin films displays similar contrasting features for the two solvent media used. Overall, this study suggests that solvent-induced, nanoscale, aggregate units may be a promising factor to control a hierarchy of microscopic aggregation properties of C60 solutions and thin films.

show abstract

“…[1][2][3][4][5][6] In general, fullerene solvates are typical molecular crystals, which are sustained by relatively weak van der Waals interactions. Therefore, high pressure technology, as a powerful method to change the distances and the interactions between the molecules, should be a suitable method to be applied in fullerene solvates for producing new novel materials and the investigation on fullerene solvates for basic scientific interest.…”

mentioning

confidence: 99%

High pressure infrared spectroscopy study on C60∗CS2 solvates

Zhou

Yao

et al. 2017

Chemical Physics Letters

Self Cite

View full text Add to dashboard Cite

High pressure IR study has been carried out on C 60 *CS 2 solvates up to 34.8GPa. It is found that the intercalated CS 2 molecules significantly affect the transformations of C 60 molecules under pressure. As a probe, the intercalated CS 2 molecules can well detect the orietanional ordering transition and deformation of C 60 molecules under pressure. The chemical stability of CS 2 molecules under pressure is also dramatically enhanced due to the spacial shielding effet from C 60 molecules around in the solvated crystal. These results provide new insight into the effect of interactions between intercalants and fullerenes on the transformations in fullerene solvates under pressure.

show abstract

Synthesis and growth mechanism of differently shaped C60 nano/microcrystals produced by evaporation of various aromatic C60 solutions

Cited by 78 publications

References 28 publications

Pressure-induced transformation and superhard phase in fullerenes: The effect of solvent intercalation

Pressure-induced transformation and superhard phase in fullerenes: The effect of solvent intercalation

Mesoscale aggregation properties of C₆₀ in toluene and chlorobenzene

High pressure infrared spectroscopy study on C60∗CS2 solvates

Contact Info

Product

Resources

About

Synthesis and growth mechanism of differently shaped C60 nano/microcrystals produced by evaporation of various aromatic C60 solutions

Cited by 78 publications

References 28 publications

Pressure-induced transformation and superhard phase in fullerenes: The effect of solvent intercalation

Pressure-induced transformation and superhard phase in fullerenes: The effect of solvent intercalation

Mesoscale aggregation properties of C60 in toluene and chlorobenzene

High pressure infrared spectroscopy study on C60∗CS2 solvates

Contact Info

Product

Resources

About

Mesoscale aggregation properties of C₆₀ in toluene and chlorobenzene