Raman spectroscopy of diamondoids

Filik, Jacob; Harvey, Jeremy N.; Allan, Neil L.; May, Paul; Dahl, Jeremy E. P.; Liu, Shenggao; Carlson, Robert M. K.

doi:10.1016/j.saa.2005.07.070

Cited by 66 publications

(75 citation statements)

References 17 publications

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“…8͒ and the excitation of a CHstretch vibrational mode ͑ϳ350 meV͒. 17 The known size and well-defined structure of adamantane, shown in Fig. 1, allow to a priori exclude several effects, which often complicate the interpretation of experimental luminescence spectra, e.g., recombination at defect sites, broadening due to size distribution, or Förster type energy transfer from smaller to larger nanocrystals.…”

Section: Resultsmentioning

confidence: 99%

Intrinsic photoluminescence of adamantane in the ultraviolet spectral region

et al. 2009

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We report intrinsic photoluminescence in the ultraviolet for adamantane ͑C 10 H 16 ͒, the smallest in a series of hydrogen-passivated diamond clusters ͑diamondoids͒. The luminescence is ascribed to recombination of selftrapped excitons. The inclusion of high amounts of nitrogen into the nanodiamond's crystal lattice, using the example of urotropine ͑hexamethylenetetramine͒, is found to quench the luminescence. The results show that diamondoids are promising semiconductor nanocrystals for nanophotonic applications in the ultraviolet spectral region.

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Section: Resultsmentioning

confidence: 99%

Intrinsic photoluminescence of adamantane in the ultraviolet spectral region

et al. 2009

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“…4,20 Adamantane displays strong Raman activity and Raman spectra of adamantane 16 as well as of several larger diamondoid molecules 21,22 have been reported. Similar to bulk diamond, diamondoid molecules including adamantane are widely transparent across the visible and UV parts of the spectrum and UV transitions are observed only beyond ≈6 eV (≈205 nm); synchrotron sources have been utilized to characterize the UV properties of a series of diamondoid molecules.…”

Section: Introductionmentioning

confidence: 96%

Rotationally resolved infrared spectroscopy of adamantane

Pirali

Boudon

Oomens

et al. 2012

The Journal of Chemical Physics

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Rotationally resolved infrared spectroscopy of adamantanePirali, O.; Boudon, V.; Oomens, J.; Vervloet, M. General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. We present the first rotationally resolved spectra of adamantane (C 10 H 16 ) applying gas-phase Fourier transform infrared (IR) absorption spectroscopy. High-resolution IR spectra are recorded in the 33-4500 cm −1 range using as source of IR radiation both synchrotron radiation (at the AILES beamline of the SOLEIL synchrotron) as well as a classical globar. Adamantane is a spherical top molecule with tetrahedral symmetry (T d point group) and has no permanent dipole moment in its vibronic ground state. Of the 72 fundamental vibrational modes in adamantane, only 11 are IR active. Here we present rotationally resolved spectra for seven of them: ν 30 , ν 28 , ν 27 , ν 26 , ν 25 , ν 24 , and ν 23 . The typical rotational structure of spherical tops is observed and analyzed using the STDS software developed in the Dijon group, which provides the first accurate energy levels and rotational constants for seven fundamental modes. Rotational levels with quantum numbers as high as J = 107 have been identified and included in the fit leading to a typical standard deviation of about 10 −3 cm −1 .

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“…16 Experimental and calculated Raman spectra of a large variety of pristine diamondoids from adamantane to heptamantane show that each diamondoid has a unique vibrational structure. 17 Using optical rotatory dispersion and vibrational circular dichroism spectroscopy, the chirality of [123]tetramantane was observed. 18 A study of the structure of the adamantane cation 19 provides evidence of a Jahn-Teller distortion in the cationic electronic ground state.…”

Section: Introductionmentioning

confidence: 99%

Laser-induced fluorescence of free diamondoid molecules

Richter

Röhr

Zimmermann

et al. 2015

Phys. Chem. Chem. Phys.

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aWe observe the fluorescence of pristine diamondoids in the gas phase, excited using narrow band ultraviolet laser light. The emission spectra show well-defined features, which can be attributed to transitions from the excited electronic state into different vibrational modes of the electronic ground state. We assign the normal modes responsible for the vibrational bands, and determine the geometry of the excited states. Calculations indicate that for large diamondoids, the spectral bands do not result from progressions of single modes, but rather from combination bands composed of a large number of Dv = 1 transitions. The vibrational modes determining the spectral envelope can mainly be assigned to wagging and twisting modes of the surface atoms. We conclude that our theoretical approach accurately describes the photophysics in diamondoids and possibly other hydrocarbons in general.

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Raman spectroscopy of diamondoids

Cited by 66 publications

References 17 publications

Intrinsic photoluminescence of adamantane in the ultraviolet spectral region

Intrinsic photoluminescence of adamantane in the ultraviolet spectral region

Rotationally resolved infrared spectroscopy of adamantane

Laser-induced fluorescence of free diamondoid molecules

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