Journal article
Sequence dependent conformations of glycidyl methacrylate/butyl methacrylate copolymers in the gas phase
International journal of mass spectrometry, v 238(3), pp 279-286
15 Nov 2004
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Sequence dependent conformations of a series of glycidyl methacrylate/butyl methacrylate (GMA/BMA) copolymers cationized by sodium were analyzed in the gas phase using ion mobility methods. GMA and BMA have the same nominal mass but vary in exact mass by 0.036
Da (CH
4 versus O). Matrix assisted laser desorption/ionization (MALDI) was used to form Na
+(GMA/BMA) copolymer ions and their collision cross-sections were measured in helium using ion mobility methods. The copolymer sequences from Na
+(GMA/BMA)
3 to Na
+(GMA/BMA)
5 (i.e. for the trimer to the pentamer) were studied. Analysis by molecular mechanics/dynamics indicates that each copolymer (regardless of sequence) forms a ring around the sodium ions due to Na
+/oxygen electrostatic interactions. However, the structures vary in size, since the epoxy oxygen atoms in the glycidyl groups are attracted to the sodium ions while the carbon-composed butyl groups are not. This allows copolymers with more GMA segments to fold tighter (more spherically) around the sodium ion and have smaller cross-sections than copolymers with a larger amount of BMA segments in the sequence. Due to this cross-sectional difference, the GMA/BMA sequence compositions of the trimer and tetramer could be quantified.
Metrics
Details
- Title
- Sequence dependent conformations of glycidyl methacrylate/butyl methacrylate copolymers in the gas phase
- Creators
- Erin Shammel Baker - University of California, Santa BarbaraJennifer Gidden - University of California, Santa BarbaraWilliam J. Simonsick - DuPont (United States)Michael C. Grady - DuPont (United States)Michael T. Bowers - University of California, Santa Barbara
- Publication Details
- International journal of mass spectrometry, v 238(3), pp 279-286
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:000225740000009
- Scopus ID
- 2-s2.0-9644260630
- Other Identifier
- 991020950672804721
UN Sustainable Development Goals (SDGs)
This publication has contributed to the advancement of the following goals:
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Industry collaboration
- Domestic collaboration
- Web of Science research areas
- Physics, Atomic, Molecular & Chemical
- Spectroscopy