Browse Prior Art Database

Determination of Dissociation Energies of Molecules

IP.com Disclosure Number: IPCOM000094275D
Original Publication Date: 1966-Aug-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Eisenthal, KB: AUTHOR [+3]

Abstract

Certain molecules exhibit luminescence upon dissociation which can be brought about by multiphoton vibrational absorption. The intensity of the luminescence is based on the bond dissociation energy.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 1

Determination of Dissociation Energies of Molecules

Certain molecules exhibit luminescence upon dissociation which can be brought about by multiphoton vibrational absorption. The intensity of the luminescence is based on the bond dissociation energy.

Because of this decomposition luminescence, the bond dissociation energy can be determined by the following method. A sample of a particular material is subjected to the output of a laser. A photomultipler is used to detect the decomposition luminescence of the sample. The signal from the photomultiplier is displayed on an oscilloscope.

The particular dissociation energy of the molecules of the material is determined by decreasing the laser frequency until no decomposition is observed as evidenced by the absence of luminescence. This frequency then is definitive of the energy necessary to break bonds of the molecules. This technique is applicable for a large number of materials including the biphenyls and bibenzyls.

1