• For preparative separation of derivatized fullerenes
• For separation of derivatized fullerenes such as C60 indene used for organic thin-film solar cell

MATERIAL CHARACTERISTICS
	COSMOSIL Buckyprep-D
Silicagel	high purity porous spherical silica gel
Average particle size	5µm
Average pore size	approx. 120Å
Specific surface area	approx. 300m2/g
Bonded Phase
Bonded phase	Nitro-carbazoyl group
End capping treatment	Noear-perfect
Feature	For separation of fullerene derivatives

Buckyprep-D offers improved separation for C60 indene, a derivatized fullerenes, that has received much attention as the n-type semiconductor material of organic thin-film solar cell.

COSMOSIL Buckyprep-D	COSMOSIL Buckyprep

Data courtesy of Yusuke Tajima, Dr. Sci.
Organic Optoelectronics Laboratory, RIKEN (Institute of Physics and Chemistry)

Column size: 4.6mmI.D.×250mm; Mobile phase: toluene; Flow rate: 1.0 ml/min.; Detection: UV 325 nm; Temperature: 30 C; Sample: C60[Indene]2 (1.0mg/ml)

Buckyprep-D retains derivatized fullerenes longer than C60. Therefore it is more suitable for preparative separation of derivatized fullerenes than conventional Buckyprep column.

5C18-MS-II	Buckyprep-D	Buckyprep

Column size: 4.6mmI.D.×250mm; Mobile phase: toluene; Flow rate: 1.0 ml/min.; Detection: UV 325 nm; Temperature: 30 C

Adjustment of Retention by Mobile Phase

Comparison of Each Solvent

Adding hexane or heptane to toluene increases retention on Buckyprep-D, while adding methanol or acetonitrile decreases retention. The effect of solvents on retention is the opposite of the conventional Buckyprep column.

Table. Comparison of percentage of retention ratio of each solvent on Buckyprep-D

Y-axis: Percentage of capacity factor k’ when it is 100% toluene

X-axis: 10% of each solvent added into toluene

Adding Methanol Decreases Retention

Retention may decrease when a polar solvent is added on Buckyprep-D. For example, by increasing the methanol concentration to 1%, the retention dramatically decreases.

Buckyprep-D
Column size:	4.6 mm I.D. x 250 mm
Flow rate:	1.0 ml/min
Temperature:	30°C
Detection:	UV 325 nm
Sample:	[6,6]-Diphenyl-C62 Bis(Butyric Acid Methyl Ester) (0.5mg/ml)
Inj. Vol:	5.0 µl

Solution for Too Strong Retention on Buckyprep-D

If the retention of derivatized fullerens on Buckyprep-D is too strong, shorten column length or add additives in toluene to decrease retention.

Using 50 mm Length Column

Buckyprep-D
Column size:	4.6 mm I.D. x 50 mm
Mobile phase:	Toluene
Flow rate:	1.0 ml/min
Temperature:	30°C
Detection:	UV 325 nm
Sample:	[6,6]-Diphenyl-C62 Bis (Butyric Acid Methyl Ester) [Bis[60]PCBM] (0.50mg/ml)
Inj. Vol:	10 µl

Adding Methanol

Buckyprep-D
Column size:	4.6 mm I.D. x 250 mm
Mobile phase:	Methanol/ Toluene = 1/99
Flow rate:	1.0 ml/min
Temperature:	30°C
Detection:	UV 325 nm
Sample:	Tris [C60] PCBM
Sample cpnc:	1.0 mg/ml
Inj. Vol:	10.0 µl

Features of Each Solvent for Fullerenes Separation

* These are stronger eluent on Buckyprep-D, opposite to Buckyprep.

Attention:

Use HPLC Grade solvent or solvents after filtration or distillation. Except for alkali aqueous and strong acidic solutions, other solvents can be used (water-free pyridine and others). Depending on solvents, pay attention to high pressure caused by high solvent viscosity.

Note:

Baseline of Bukyprep-D is less stable relative to other fullerene columns. To stabilize baseline, let acetonitrile run through for 10 minutes before analysis.

COSMOSIL BUCKYPREP-D

Learn more about Carbon 60 at SES Research