✦ LIBER ✦

Characterization and monitoring reaction of polyurethane dendritic wedges and dendrimers using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry

✍ Scribed by Uraiwan Puapaiboon; Richard T. Taylor

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 124 KB
Volume: 13
Category: Article
ISSN: 0951-4198
DOI: 10.1002/(sici)1097-0231(19990330)13:6<508::aid-rcm516>3.0.co;2-q

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✦ Synopsis

The purity of polyurethane dendritic wedges from first generation through fourth generation was verified by employing matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOFMS). First and third generation polyurethane porphyrin dendrimers, and tri-core dendrimers obtained by attachment of the corresponding dendritic wedges to a porphyrin and to 1,3,5benzenetricarboxylic acid, were also mass analyzed by MALDI measurements. The spectra were acquired in both reflectron and linear mode. Due to the ease and speed of the analysis, MALDI-TOF also proved to be a powerful tool in monitoring the progress of the reaction which can provide significant informative results that can be useful in designing and optimizing the synthesis.

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