Spectroscopy and Mechanism in Triboluminescence

Sweeting, Linda M.; Cashel, Martha L.; Dott, Marta; Gingerich, Joanne M.; Guido, Janis L.; Kling, Janet A.; Pippin, Reginald F.; Rosenblatt, Michael; Rutter, Alan M.; Spence, Rebecca A.

doi:10.1080/10587259208025838

Cited by 33 publications

(10 citation statements)

References 17 publications

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“…Longchambon ,, observed that the triboluminescence emission spectra of sucrose, tartaric acid, cadmium sulfate, uranyl nitrate, and fluorite contained the line spectrum characteristic of an electrical discharge through air (almost exclusively the 3 π u → 3 π g bands, or second positive group, of N 2 characteristic of lightning). The nature of the emission was subsequently confirmed by others and is shown in Figure . − Longchambon also observed fluorescence or a continuum accompanying the N 2 lines for a few samples . Early experiments indicated that the phenomenon was most commonly observed in noncentrosymmetric (noncentric), and therefore piezoelectric, materials and was absent in conductors, confirming that charge separation is necessary for its observation.…”

Section: Introductionsupporting

confidence: 67%

Triboluminescence with and without Air

Sweeting

2001

Chem. Mater.

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159

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Twenty-three triboluminescent organic and inorganic materials were examined for crystal symmetry, differences between photoluminescence and triboluminescence emission spectra, spectroscopic evidence of an electrical discharge, and persistence of activity under liquids; some were also tested under other atmospheres. These experiments indicate that 18 materials were excited by a discharge, by either electron bombardment of the material or secondary excitation by the UV emissions of the surrounding gas. Five are apparently excited without a discharge, probably by the defect recombination characteristic of deformation luminescence.

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Section: Introductionsupporting

confidence: 67%

Triboluminescence with and without Air

Sweeting

2001

Chem. Mater.

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159

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“…The triboluminescence spectra of all the photoluminescent crystals we have studied , exhibit the photoluminescence spectrum with a small bathochromic shift; 11 fits this pattern (Figure ). Self-absorption readily accounts for the differences. , Tribophotoluminescence most likely occurs throughout the crystal as cracks form and must pass through the crystal to reach the detector; photoluminescence, on the other hand, is emitted from the surface, initiated by surface irradiation. The shortest emission wavelengths, which coincide with absorption bands, are thus absorbed more during tribophotoluminescence than photoluminescence.…”

Section: Discussionmentioning

confidence: 52%

“…In a few tribophotoluminescent materials, e.g., uranyl nitrate hexahydrate and coumarin, additional emission from an electrical discharge in dinitrogen provides evidence that an electrical discharge occurred. Selective absorption of part of the discharge emission by the crystals further provides evidence that it excited the tribophotoluminescence and is not an independent event. ,, Its absence, as in 11 , provides no insight into the mechanism of excitation of the photoluminescence: either no discharge occurs or all of the emitted light is absorbed by the crystals.…”

Section: Discussionmentioning

confidence: 99%

Crystal Structure and Triboluminescence 2. 9-Anthracenecarboxylic Acid and Its Esters

et al. 1997

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Triboluminescence activity is usually assumed to be a consequence of crystal dissymmetry; however, the multitude of reports of centrosymmetric triboluminescent materials cast doubt on that assumption. We examine here the connection between triboluminescence and crystal symmetry without prejudice, by synthesizing 12 esters of 9-anthracenecarboxylic acid and correlating their triboluminescence activity and that of the acid with crystal structure, purity, and photoluminescence. In this series, a noncentrosymmetric crystal structure is necessary but not sufficient for triboluminescence in relatively pure materials; impurities are necessary for triboluminescence activity in all centrosymmetric and one noncentrosymmetric materials. Crystallization motif and other structure factors were only weakly correlated with triboluminescence. The results provide evidence in support of a charge separation and recombination mechanism for the excitation of the triboluminescence.Supporting Information Available: For 3-4 and 6-12, complete lists of atomic coordinates, bond lengths, bond angles, and anisotropic displacement coefficients (52 pages); for 2-4 and 6-12, correlation of crystal cell parameters with stacking motif (1 page); and observed and calculated structure factors (46 pages). Ordering information is given on the current masthead page. CM960438R

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“…For MAIV, a solution of a MAI matrix compound, e.g. 3‐nitrobenzonitrile (3‐NBN) , is pipetted together with the analyte onto a sample holder in a manner that is essentially identical to MALDI sample deposition protocols (e.g. dried droplet or layer deposition) .…”

Section: Introductionmentioning

confidence: 99%

A broad‐based study on hyphenating new ionization technologies with MS/MS for PTMs and tissue characterization

et al. 2016

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Matrix-assisted ionization (MAI) is a newly discovered method for converting compounds from the solid phase to gas-phase ions having charge states similar to electrospray ionization (ESI), but without the need for high-energy sources such as lasers or high voltage. Laserspray ionization (LSI) is a subset of MAI that uses a laser to provide high spatial resolution analyses, but the laser is not directly involved in the ionization process. These methods produce multiply-charged analyte ions that are useful for characterizing compounds directly from surfaces using advanced characterization technologies. Because the multiply-charged ions originate from charged matrix clusters, efficient desolvation of the matrix is a prerequisite. Here, we report on the utility of collision-induced dissociation (CID) and electron transfer dissociation (ETD) coupled to mass spectrometry using several MAI and LSI matrices for peptide and protein characterization employing mass spectrometers from two manufacturers. The information obtained is similar to that using ESI for most analyses and superior to matrix-assisted laser desorption/ionization (MALDI) as is shown for intact proteins and protein digests directly from mouse brain tissue sections. The ionization processes are soft so that posttranslational modification (e.g. phosphorylation) sites are readily determined. Instances where ETD or CID in conjunction with MAI failed are attributed to lack of desolvation of charged matrix:analyte particles.

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Spectroscopy and Mechanism in Triboluminescence

Cited by 33 publications

References 17 publications

Triboluminescence with and without Air

Triboluminescence with and without Air

Crystal Structure and Triboluminescence 2. 9-Anthracenecarboxylic Acid and Its Esters

A broad‐based study on hyphenating new ionization technologies with MS/MS for PTMs and tissue characterization

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