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nitrobenzoxadiazole

The chemical structure of 7-Benzylamino-4-nitrobenz-2-oxa-1,3-diazole is shown at the right. The absorption and fluorescence emission spectra are shown below. The structure, absorption, and fluorescence data were all obtained from the PhotochemCAD package by Jonathan Lindsey. This excellent program allows rapid comparison of spectra and enables one to do a variety of photochemically relevant calculations. Chemical Structure

Absorption

Absorption Spectrum

This is a graph of the molar extinction coefficient of 7-Benzylamino-4-nitrobenz-2-oxa-1,3-diazole dissolved in ethanol. It was measured by R. A. Fuh on summer, 95 [H. Du, R. A. Fuh, J. Li, A. Corkan, J. S. Lindsey, "PhotochemCAD: A computer-aided design and research tool in photochemistry," Photochemistry and Photobiology, 68, 141-142, 1998]. 7-Benzylamino-4-nitrobenz-2-oxa-1,3-diazole has a molar extinction coefficient of 19,700 M-1cm-1 at 460.5 nm [R. A. Kenner and A. A. Aboderin, "A new fluorescent probe for protein and nucleoprotein conformation. Binding of 7-(p-Methoxybenzylamino)-4-nitrobenzoxadiazole to bovine trypsinogen and bacterial ribosomes," Biochemistry, 10, 4433-4440, 1971].

Original Data | Extinction Data

Fluorescence

Emission Spectrum

This is the fluorescence emission spectrum of 7-Benzylamino-4-nitrobenz-2-oxa-1,3-diazole dissolved in ethanol. The spectrum was taken by R. A. Fuh on summer, 95 using an excitation wavelength of 410 nm [H. Du, R. A. Fuh, J. Li, A. Corkan, J. S. Lindsey, "PhotochemCAD: A computer-aided design and research tool in photochemistry," Photochemistry and Photobiology, 68, 141-142, 1998]. The quantum yield is 0.360 [R. A. Kenner and A. A. Aboderin, "A new fluorescent probe for protein and nucleoprotein conformation. Binding of 7-(p-Methoxybenzylamino)-4-nitrobenzoxadiazole to bovine trypsinogen and bacterial ribosomes," Biochemistry, 10, 4433-4440, 1971].

Original Data

This page and graphs were created by Scott Prahl.