# Red fluorescence lamellae in calcitic prismatic layer of Pinctada vulgaris shell (Mollusc, bivalvia)
> Arma L.

URL kanonis: https://discover.unhas.ac.id/publications/red-fluorescence-lamellae-in-calcitic-prismatic-layer-of-pinctada-vulgaris-shell
Jurnal / Konferensi: Optical Materials Express
Tahun terbit: 2014
DOI: https://doi.org/10.1364/OME.4.001813
ISSN: 21593930
Kuartil SJR: Q2
Citations: 11

## Authors
- Arma L.

## Abstract
Red fluorescence lamellae in prismatic layers of Pinctada vulgaris shell were investigated. SEM-EDS, XRD, and TG-DTA were utilized to characterize prismatic layers. We found that prismatic layers are calcitic prismatic (CP) layers with rich organic substances. Excitation spectrum for red fluorescence determined by a spectrophotometer indicates that the fluorescent matter in the organic substances is porphyrin compound derivatives. By using a fluorescence microspectroscope, the cross section of CP layers shows red fluorescence forming lamellar pattern. The lamellar pattern consists of red and black parallel zones with a modulation of emission intensity. Elemental mapping show a correlation of the fluorescence intensity decay with sulphur-rich zones occupying the CP layers in the black zones.

## Keywords
- Fluorescence
- Lamellar structure
- Materials science
- Fluorescence spectroscopy
- Bivalvia
- Analytical Chemistry (journal)
- Chemistry
- Composite material
- Optics
- Mollusca
- Biology
- Physics
- Chromatography
- Zoology

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Sumber: Discover Unhas — RIMS Universitas Hasanuddin.
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