Wallace, W.
, Flynn, K.
, Guttman, C.
, VanderHart, D.
, Prabhu, V.
, De, A.
, Felix, N.
and Ober, C.
(2009),
Quantitative Measurement of the Polydispersity in the Extent of Functionalization of Glass Forming Resorcinarenes, Rapid Communications in Mass Spectrometry, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=854457
(Accessed April 18, 2024)
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Quantitative Measurement of the Polydispersity in the Extent of Functionalization of Glass Forming Resorcinarenes
Published
Author(s)
, , , , , Anuja De Silva, Nelson Felix, Christopher K. Ober
Abstract
The polydispersity in the degree of functionalization for two calix[4]resorcinarenes was determined by measuring their molecular mass distribution with matrix-assisted laser desorption/ionization time of flight mass spectrometry. A mathematical method for polydisperse materials is described that creates a calibration curve to correct the ion intensities in the mass spectrum to give a more reliable molecular mass distribution. Correction is required due to various sample preparation and instrumental effects that may produce a systematic bias on the number of oligomers measured. This method employs gravimetric mixtures of analytes with different degrees of functionalization. One calix[4]resorcinarene was found to give accurate molecular mass distributions with little correction, while another having a very similar molecular structure was found to exhibit strong over counting of oligomers with a high degree of functionalization.Citation
Rapid Communications in Mass Spectrometry
Volume
23
Pub Type
Journals
Download Paper
Keywords
glass, mass spectrometry, photolithography
Citation
Created May 1, 2009, Updated February 19, 2017