Soft deposition of organic macromolecules with fast atom bombardment mass spectrometry.
In order to investigate the requirements for soft deposition of intact positively charged organic macromolecules, an homogenous series of modal compounds such as polyphenylene dendronized perylenes (PDPs), C(80)H(52), C(200)H(132) and C(320)H(212) and a series of derivatives involving perylene derivative, C(98)H(104)N(8)O(4), terrylene derivative, C(78)H(82)N(6)O(4) and quaterrylene derivative, C(140)H(138)N(10)O(8), were used for soft-landing experiments on a metallic or matrix coated surface using fast atom bombardment mass spectrometry. Soft-landing can be achieved at impact energies below 180 eV with no production of fragments. The deposition rate shows strong energy dependence with similar behavior of the different organic compounds. A single isotope of the molecule was selected and soft-landed at increased resolution.
Yang
X
X
Max-Planck-Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz, Germany. yang2004@u.washington.edu
Räder
H J
HJ
Ropuhanipour
A
A
Müllen
K
K