Encapsulation of Guest Molecules in Self-assembling Capsules

2 Encapsulation of Guest Molecules in Self-assembling Capsules 

The encapsulation of guest molecules in self-assembling capsules is a topic of great 

Fragmentation processes during a CID experiment with a softball-tetraethylammonium complex, a) Mass spectrum of a sample solution without additional acceleration ofthe ions, b) The same experiment with an additional acceleration voltage of—100 V. The inset shows which fragmentation processes reasonably rationalize the observed product ion signals. 

CHCl3 acetone (2 1). (b) ESI mass spectrum ofthe same solution after addition of 1 eq. of a tetramethyl ammonium (TMA) salt, (c) Distribution of clusters with tetrabutyl ammonium (TBA) as the guest cation, (d) ESI mass spectrum ofthe hexamer encapsulating Ru(bpy)3 +. The experimental and calculated isotope patterns nicely match. 

These examples show how structural data on different types of encapsulation complexes can be obtained by mass spectrometry. Again, the evidence is indirect, but helpful and complementary to that from other methods. 

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