Systematic investigation of the molecular behavior of C<sub>50</sub>X<sub>2</sub>(X = H,F): An echo of the H/F parallels on structures and energetics among their derivatives

Xu, Xiufang; Xing, Yanfeng; Liang, Yunxiao; Shang, Zhenfeng; Wang, Gui‐Chang; Cai, Zunsheng; Pan, Yinming; Xin, Zhao

doi:10.1039/b206653j

Cited by 51 publications

(77 citation statements)

References 96 publications

(121 reference statements)

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“…In a typical SERS experiment, the enhancement is the sum of enhancement sprouting from nanoparticles in various topologies (single particles, dimers, and multiparticle aggregates). It is important to note that the enhancement obtained from nanoparticle aggregates with narrow interparticle gaps completely dominates over that of any isolated nanoparticles 50–52…”

Section: Electromagnetic Enhancement and Nanostructuresmentioning

confidence: 99%

Nanostructured Surfaces and Assemblies as SERS Media

Singamaneni

Tsukruk

2008

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752

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Metallic nanostructures attract much interest as an efficient media for surface-enhanced Raman scattering (SERS). Significant progress has been made on the synthesis of metal nanoparticles with various shapes, composition, and controlled plasmonic properties, all critical for an efficient SERS response. For practical applications, efficient strategies of assembling metal nanoparticles into organized nanostructures are paramount for the fabrication of reproducible, stable, and highly active SERS substrates. Recent progress in the synthesis of novel plasmonic nanoparticles, fabrication of highly ordered one-, two-, and three-dimensional SERS substrates, and some applications of corresponding SERS effects are discussed.

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Section: Electromagnetic Enhancement and Nanostructuresmentioning

confidence: 99%

Nanostructured Surfaces and Assemblies as SERS Media

Singamaneni

Tsukruk

2008

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752

672

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“…It is interesting to note that the LUMO has high contributions from the atomic orbitals located at these positions. Among all the possible ways to locate two substituents in these C atoms, we also followed the conclusion of Xu et al, [56] and we separated both CÀX groups by four CÀC bonds. The resulting positions for the substitutions are marked in Figure 1.…”

Section: Derivativesmentioning

confidence: 96%

“…A first approach would be to inspect the LUMOs, but we found that these orbitals are quite delocalised in the fullerene cage. Instead, we followed the work of Xu et al, [56] who systematically studied the preferred position for F and Cl substitution in the C 50 X 2 system; they concluded that these positions correspond to carbon atoms that are at the confluence of one double (pentagon-pentagon) and two single (pentagon-hexagon) bonds. It is interesting to note that the LUMO has high contributions from the atomic orbitals located at these positions.…”

Section: Derivativesmentioning

confidence: 99%

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Structure and Electronic Properties of Fullerenes C₅₂^q+: Is C₅₂²⁺ an Exception to the Pentagon Adjacency Penalty Rule?

2005

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The structure, vibrational spectra and electronic properties of the neutral, singly and doubly charged C52 fullerenes were studied by means of the Hartree-Fock method and density functional theory. Different isomers were considered, in particular those with the lowest possible number (five or six) of adjacent pentagons, and an isomer with a four-atom ring. For neutral and singly charged species, the most stable isomer is that with the lowest number of adjacent pentagons, namely five. However, for C(52)2+, the most stable structure has six adjacent pentagons. This finding, which contradicts the pentagon adjacency penalty rule, is a consequence of complete filling of the HOMO pi shell and the near-perfect sphericity of the most stable isomer. The simulated vibrational spectra show important differences in the positions and intensities of the vibrations for the different isomers.

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“…Xu et al also found that the grain size and intergrain interaction of the FePt/C multilayer¯lms decreases with increasing C content. 49 The coercivity not only depends on the C content, but also on the structure of the FePt/C mutilayer. Moreover, L1 0 -FePt particles with high Fig.…”

Section: Granular Perpendicular Mediamentioning

confidence: 99%

Overcoming the Trilemma Issues of Ultrahigh Density Perpendicular Magnetic Recording Media by L1₀-Fe(Co)Pt Materials

Wang

Xing

2015

SPIN

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L1 0 -ordered FePt and CoPt (collectively called L1 0 -Fe(Co)Pt in this review) have become potential materials for future ultrahigh density perpendicular magnetic recording (PMR) media due to their high magnetocrystalline anisotropy, rendering small grains with high thermal stability. However, PMR media using such high anisotropy faces the well-known trilemma issues among thermal stability, signal-to-noise ratio (SNR), and writability. This paper will provide an overview of the impact of L1 0 -Fe(Co)Pt on overcoming the superparamagnetic limit and balancing the trilemma issues for ultrahigh density PMR media. Here the research and development of L1 0 -Fe(Co)Pt materials will be presented, from the perspectives of enhancing thermal stability, SNR and writability. Furthermore, we will provide some combined approaches to tackle the challenges in balancing the trilemma issues, focusing on materials engineering. SPIN 2015.05. Downloaded from www.worldscientific.com by MONASH UNIVERSITY on 08/25/15. For personal use only. Overcoming the Trilemma Issues of Ultrahigh Density PMR 1530002-3 SPIN 2015.05. Downloaded from www.worldscientific.com by MONASH UNIVERSITY on 08/25/15. For personal use only.

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Systematic investigation of the molecular behavior of C₅₀X₂(X = H,F): An echo of the H/F parallels on structures and energetics among their derivatives

Cited by 51 publications

References 96 publications

Nanostructured Surfaces and Assemblies as SERS Media

Nanostructured Surfaces and Assemblies as SERS Media

Structure and Electronic Properties of Fullerenes C₅₂^q+: Is C₅₂²⁺ an Exception to the Pentagon Adjacency Penalty Rule?

Overcoming the Trilemma Issues of Ultrahigh Density Perpendicular Magnetic Recording Media by L1₀-Fe(Co)Pt Materials

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Systematic investigation of the molecular behavior of C50X2(X = H,F): An echo of the H/F parallels on structures and energetics among their derivatives

Cited by 51 publications

References 96 publications

Nanostructured Surfaces and Assemblies as SERS Media

Nanostructured Surfaces and Assemblies as SERS Media

Structure and Electronic Properties of Fullerenes C52q+: Is C522+ an Exception to the Pentagon Adjacency Penalty Rule?

Overcoming the Trilemma Issues of Ultrahigh Density Perpendicular Magnetic Recording Media by L10-Fe(Co)Pt Materials

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Systematic investigation of the molecular behavior of C₅₀X₂(X = H,F): An echo of the H/F parallels on structures and energetics among their derivatives

Structure and Electronic Properties of Fullerenes C₅₂^q+: Is C₅₂²⁺ an Exception to the Pentagon Adjacency Penalty Rule?

Overcoming the Trilemma Issues of Ultrahigh Density Perpendicular Magnetic Recording Media by L1₀-Fe(Co)Pt Materials