Multivalency in the gas phase: The study of dendritic aggregates by mass spectrometry

Angewandte Chemie - International Edition

Volumn 43, Issue 27, 2004, Pages 3557-3562

  Broeren, Maarten A C ^a   Van Dongen, Joost L J ^a   Pittelkow, Michael ^a   Christensen, Jørn B ^a   Van Genderen, Marcel H P ^a   Meijer, E W ^a  

^a EINDHOVEN UNIVERSITY OF TECHNOLOGY   (Netherlands)

Author keywords

Dendrimers; Dynamic libraries; Host guest chemistry; Mass spectrometry; Supramolecular chemistry

Indexed keywords

DISSOCIATION; MASS SPECTROMETERS; MASS SPECTROMETRY; SPECTRUM ANALYSIS;

DENDRITIC AGGREGATES; MULTIVALENCY;

DENDRIMERS;

DENDRIMER;

ARTICLE; DISSOCIATION; GAS; MASS SPECTROMETRY; MOLECULAR INTERACTION; MOLECULE;

EID: 4544308160     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.200453707     Document Type: Article

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32. A higher acceleration voltage in the experiment yields a higher kinetic energy for the complexes, and this in effect raises the reaction temperature for the release of the guests. As a result, the rate constants for the dissociation of the guests increase, and higher conversions are reached (more fragmentation of the initial complex). We have modeled this in a constant-temperature approach by using longer reaction times to give similarly higher conversions. In other words, we are using a temperature-time transformation, so that the fractions of the various complexes at a certain time simulate the effect of the collision cell. In the model we have assumed that the individual rate constants depend in the same way on the temperature. For a detailed description see the Supporting Information.