Raman spectroscopy of carbon nanohoops
Source abstract
Abstract
Abstract We present the Raman spectra for [ n ]Cycloparaphenylenes ([ n ]CPPs) of different sizes. A plethora of Raman modes are observed in these spectra, including modes that are analogous to those of the carbon nanotubes (CNTs) such as G-band, as well as Raman peaks that are unique for carbon nanohoops. In addition, we have calculated the theoretical Raman spectra of [ n ]CPPs for n = 4–20 using density functional theory (DFT), which are then compared to the experimental results for the assignment of different modes. The Raman peak positions are seen to be dependent on the size of the nanohoop from both the experimental and the calculated results.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Carbon Nanotubes in Composites · Synthesis and Properties of Aromatic Compounds · Fullerene Chemistry and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (28)
Show source-provided references
1. Synthesis, characterization, and theory of [9]-, [12]-, and [18]Cycloparaphenylene: carbon nanohoop structures10.1021/ja807126u ↗
2. Progress and challenges for the bottom-up synthesis of carbon nanotubes with discrete chirality10.1016/j.cplett.2010.04.067 ↗
3. One-step conversion of aromatic hydrocarbon bay regions into unsubstituted benzene rings: a reagent for the low-temperature, metal-free growth of single-chirality carbon nanotubes10.1002/anie.201002859 ↗
4. Carbon nanotubes from short hydrocarbon templates. Energy analysis of the Diels–Alder cycloaddition/rearomatization growth strategy10.1039/C0JM02517H ↗
5. Initiation of carbon nanotube growth by well-defined carbon nanorings10.1038/nchem.1655 ↗
6. Synthesis of p, p′-diphenylene disulfide
7. Selective and random syntheses of [n]Cycloparaphenylenes (n=8–13) and size dependence of their electronic properties10.1021/ja2020668 ↗
8. Selective synthesis of strained [7]Cycloparaphenylene: an orange-emitting fluorophore10.1021/ja205606p ↗
9. Selective syntheses of [7]–[12]Cycloparaphenylenes using orthogonal Suzuki–Miyaura cross-coupling reactions10.1021/jo3011667 ↗
10. Gram-scale synthesis and crystal structures of [8]- and [10]CPP, and the solid-state structure of C-60@ [10]CPP10.1039/c2sc20719b ↗
11. Synthesis, characterization, and crystal structure of [6]Cycloparaphenylene10.1002/anie.201108167 ↗
12. Raman spectroscopy of carbon nanotubes10.1016/j.physrep.2004.10.006 ↗
13. Revealing new electronic behaviours in the Raman spectra of chirality-enriched carbon nanotube ensembles10.1002/pssb.201000350 ↗
14. Violation of the condon approximation in semiconducting carbon nanotubes10.1021/nn201430z ↗
15. Enhancement of the quinoidal character for smaller [n]Cycloparaphenylenes probed by Raman
16. Theoretical studies on the structures and strain energies of Cycloparaphenylenes10.1021/ol1006168 ↗
17. Raman modes of metallic carbon nanotubes10.1103/PhysRevB.58.R16016 ↗
18. Fundamental optical processes in armchair carbon nanotubes10.1039/c2nr32769d ↗
19. Longitudinal optical phonons in metallic and semiconducting carbon nanotubes10.1103/PhysRevLett.102.075501 ↗
20. Indexing of individual single-walled carbon nanotubes from Raman spectroscopy10.1103/PhysRevB.80.245416 ↗
21. Raman spectrum of graphite10.1063/1.1674108 ↗
22. Interpretation of Raman spectra of disordered and amorphous carbon10.1103/PhysRevB.61.14095 ↗
23. Raman spectroscopy of graphene and graphite: disorder, electron–phonon coupling, doping, and nonadiabatic effects10.1016/j.ssc.2007.03.052 ↗
24. Perspectives on carbon nanotubes and graphene Raman spectroscopy10.1021/nl904286r ↗
25. Araujo PT, Maciel IO, Pesce PBC, Pimenta MA, Doorn SK, Qian H, Hartschuh A, Steiner M, Grigorian L, Hata K, Jorio A. Physical Review B 2008; 77, 241403(R):1–4.10.1103/PhysRevB.77.241403 ↗
26. Simulation of IR and Raman spectral based on scaled DFT force fields: a case study of 2-amino 4-hydroxy 6-trifluoromethylpyrimidine, with emphasis on band assignment10.1016/j.saa.2007.12.033 ↗
27. Harmonic vibrational frequencies: an evaluation of Hartree–Fock, Moller–Plesset, quadratic configuration interaction, density functional theory, and semiempirical scale factors10.1021/jp960976r ↗
28. Direct scaling of primitive valence force constants: an alternative approach to scaled quantum mechanical force fields10.1021/jp980038m ↗