15-05-2013 | Ziyun Wang; Bo Yang; Yulong Wang; Yifang Zhao; Xiaoming Cao; Peijun Hu, Physical Chemistry Chemical Physics, 2013

The reactivity of sp2 carbon materials is studied using the adsorption and dissociation of O2 on graphene and graphene oxide as model systems. The reactions on the basal plane, zigzag and armchair edges of graphene and graphene oxide with different oxygen-containing groups are calculated ...

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15-05-2013 | Yuhua Xue; Dingshan Yu; Liming Dai; Ruigang Wang; Dingqiang Li; Ajit K Roy; Fan Lu; Hao Chen; Yong Liu; Jia Qu, Physical Chemistry Chemical Physics, 2013

Using a modified chemical vapor deposition (CVD) method, we have prepared a class of new graphene foams (GFs) doped with nitrogen, boron or both. Nitrogen-doped graphene foams (N-GFs) with a nitrogen doping level of 3.1 atom% were prepared by CVD of CH4 in the presence of NH3 while ...

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15-05-2013 | Youngmin Kim; Surajit Some; Hyoyoung Lee, Chemical Communication, 2013

We found that GO nanosheets, which have a high specific surface area that can display a high density of oxygen functional groups, could function as a phase transfer catalyst (PTC) in the development of new form of organocatalyst. This work presents a novel method to prepare carbon-carbon ...

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15-05-2013 | Yang Wang, Dillon Wong, Andrey V. Shytov, Victor W. Brar, Sangkook Choi, Qiong Wu, Hsin-Zon Tsai, William Regan, Al ..., Science , 2013

The massless charge carriers in graphene interact with highly charged defects to create an analog of atomic collapse states.

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15-05-2013 | Narendra Kurra; G U Kulkarni, Lab on a Chip, 2013

Paper based electronics is fast growing in the recent years. A drawing with pencil on paper is perhaps the simplest and easiest way of establishing a graphitic circuitry in a solvent-free manner which in the post-graphene years, has risen unusual interest. Here in this focus article, we bring ...

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15-05-2013 | Hsiao-Yu Chang; Shixuan Yang; Jongho Lee; Li Tao; Wan-Sik Hwang; Debdeep Jena; Nanshu Lu; Deji Akinwande, ACS Nano, 2013

While there has been increasing studies of MoS2 and other two-dimensional (2D) semiconducting dichalcogenides on hard conventional substrates, experimental or analytical studies on flexible substrates has been very limited so far, even though these 2D crystals are understood to have greater ...

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15-05-2013 | Hyeonjun Baek; Chul-Ho Lee; Kunook Chung; Gyu-Chul Yi, Nano Letters, 2013

Direct epitaxial growth of inorganic compound semiconductors on lattice-matched single-crystal substrates has provided an important way to fabricate light sources for various applications including lighting, displays and optical communications. Nevertheless, unconventional substrates such as ...

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15-05-2013 | Myung Jong Ju; Jae Cheon Kim; Hyun-Jung Choi; In Taek Choi; Sang Gyun Kim; Kimin Lim; Jaejung Ko; Jae-Joon Lee; In-Y ..., ACS Nano, 2013

Highly efficient counter electrodes (CEs) for dye-sensitized solar cells (DSSCs) were developed using thin films of scalable and high-quality, nitrogen-doped graphene nanoplatelets (NGnP), which was synthesized by a simple two-step reaction sequence. The resultant NGnP was deposited on ...

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15-05-2013 | Jian Zhu; Huanan Zhang; Nicholas A. Kotov, ACS Nano, 2013

Materials assembled by layer-by-layer (LBL) assembly and vacuum-assisted flocculation (VAF) have similarities, but a systematic study of their comparative advantages and disadvantages is missing. Such a study is needed from both practical and fundamental perspectives aiming at a better ...

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15-05-2013 | Wu, Shaoling ; Zhao, Xindong ; Li, Yanhui ; Du, Qiuju ; Sun, Jiankun ; Wang, Yonghao ; Wang, Xin ; Xia, Yanzhi ; Wan ..., Materials, 2013

Doxorubicin hydrochloride (DOX) is an effective anticancer agent for leukemia chemotherapy, although its clinical use has been limited because of its side effects such as cardiotoxicity, alopecia, vomiting, and leucopenia. Attention has been focussed on developing new drug carriers with high ...

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