+++3 ACS СПАСИБО!!!!

[pat]

Добрый день, коллеги!
Помогите, пожалуйста, найти такие статьи:

1. ACS Nano
Xiaoming Sun, Dachao Luo, Junfeng Liu and David G. Evans
Monodisperse Chemically Modified Graphene Obtained by Density Gradient Ultracentrifugal Rate Separation
2010, 4 (6), pp 3381–3389

DOI:

http://dx.doi.org/10.1021/nn1000386

2. J. Phys. Chem. B.
Weina Zhang, Wei He and Xinli Jing
Preparation of a Stable Graphene Dispersion with High Concentration by Ultrasound
2010, 114 (32), pp 10368–10373

DOI:

http://dx.doi.org/10.1021/jp1037443

3. J. Am. Chem. Soc.
Xiluan Wang, Hua Bai, and Gaoquan Shi
Size Fractionation of Graphene Oxide Sheets by pH-Assisted Selective Sedimentation
2011, 133 (16), pp 6338–6342

DOI:

http://dx.doi.org/10.1021/ja200218y

Спасибо заранее!!!

[macro]

[pat]

Спасибо большое, Macro!!!