Abstract:

Excitation and phosphorescence spectra of 10 polycyclic aromatic sulfur heterocycles (PASHs) at 4.2K are reported. Spectra were recorded with the aid of a Fluoromax (Horiba Jobin Yvon) using a pulsed lamp, fiber optic probe, and shpolskii solvents.

Suggested Citation:

Maha Al Tameemi; Sadia Arif; Andres D. Campiglia. 2017. 4.2K Excitation and Phosphorescence Spectra of Polycyclic Aromatic Sulfur Heterocycles with Molecular Weight 234. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N7N87875

Publications:

Al-Tameemi, M., Arif, S., Campiglia, A. D., Wilson, W. B., & Wise, S. A. (2018). Photoluminescence Spectroscopy of Anthrathiophenes and Benzonaphthothiophenes in Shpol’skii Matrixes. Talanta. doi:10.1016/j.talanta.2018.10.044

Purpose:

To identify spectral features of polycyclic aromatic sulfur heterocycles.

Data Parameters and Units:

column 1 = X is wavelength (nm) column 2 = Y is intensity (cps) Wavelength range = 200-700nm; Sample Window = 9ms; Initial delay = 0.04ms; Time between Flashes = 50ms; Number of pulses = 10 File naming convention example: 150_ppb_P32bT_4.2K_emission_blanksub_smoothed where 150 = concentration value of polycyclic aromatic sulfur heterocycles (PASHs); ppb = concentration unit (parts per billion); P32bT = PASH standard where the following code list was used: P32T = Phenanthro (3,2-b) Thiophene P23T = Phenanthro (2,3-b) Thiophene P12T = Phenanthro (1,2-b) Thiophene P21T = Phenanthro (2,1-b) Thiophene P34T = Phenanthro (3,4-b) Thiophene P43T = Phenanthro (4,3-b) Thiophene P910T = Phenanthro (9,10-b) Thiophene BbN12T = Benzo (b) naphtho (1,2-b) Thiophene BbN21T = Benzo (b) naphtho (2,1-b) Thiophene BbN23T = Benzo (b) naphtho (2,3-b) Thiophene 4.2K= temperature of the sample; emission = spectra type (emission or excitation); blanksub = blank was subtracted from data; smoothed = spectrum smoothed using a Savitzky-Golay filter with a polynomial of order 2 with a window of 5 points.

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