Spectrometry

NMR analysis: our services

• Consultation and analytical concept development
  • Consultation on customer-specific analytical questions
  • Development of suitable analytical concepts in accordance with the respective objectives
• Customized measurement methods and data evaluation
  • Selection and adaptation of suitable NMR methods to the material, analytical question, and target parameters
  • Specific data evaluation to derive structure-relevant information
• Customized sample preparation
  • Grinding of solid materials
  • Solvent-based extraction
  • Solubility studies to identify a suitable NMR solvent
  • Provision of various deuterated solvents
  • Provision of various internal standards for quantitative NMR measurements in solution
  • Preparation of complex material mixtures, for example soil samples for microplastic analysis
• NMR measurements and spectral analysis
  • Acquisition of 1D and 2D NMR spectra of a wide range of nuclei using various pulse sequences
  • Determination of chemical shifts, coupling constants, signal intensities, linewidths, and line shapes
  • Analysis of homonuclear and heteronuclear couplings
  • Determination of the relaxation times T₁ and T₂
  • Acquisition of spectral parameters relevant to structure and molecular dynamics
• Structure elucidation and material identification
  • Determination of microstructure
  • Determination of comonomer content
  • Analysis of copolymer statistics and sequence distribution
  • Determination of residual monomer content
  • Investigation of end groups, branching, degree of crosslinking, and tacticity
• Identification of the composition of unknown materials
  • Assignment of polymer types, additives, residues, potential foreign components, and inorganic constituents
• Characterization of native polymers with respect to their molecular and supramolecular structure
  • Determination of the degree of substitution (MS, DS)
  • Analysis of substituent distribution
  • Identification and quantification of cellulose polymorphs
  • Determination of NMR crystallinity
• Diffusion NMR measurements
  • Determination of diffusion coefficients in defined solvents
  • Estimation of molecular size and hydrodynamic behavior
  • Investigation of aggregation, intermolecular interactions, and multicomponent systems
• Microplastic analysis in soil
  •  Identification of polymeric constituents in complex soil matrices
  • Characterization of the chemical composition of microplastic particles
  • Support in differentiating between various polymer types
  • Provision of analytical data for environmental assessment, source-input analysis, and material-flow investigations
  • Application to humus, forest, and marine soils
• Data generation for research, development, and evaluation
  • Process and material development
  • Quality control
  • Analysis of process residues
  • Verification of chemical purity
  • Structure elucidation
  • Application of artificial intelligence in materials research
  • Simulations of structure formation
  • Life-cycle assessment (LCA) studies
     

Analytes: solutions, gels, solids, and mixtures of substances

• Liquids and polymers in solution
• Gels and swellable materials
• Solids and foams
   

• Organic and inorganic materials
• Native polymers such as cellulose, starch, lignin, and their derivatives
• Bio-based and synthetic polymers
   

NMR equipment for materials research

• 500 MHz AVANCE NEO NMR spectrometer (Bruker)
  • Probes for solution-state NMR measurements
  • Probe for diffusion NMR measurements in solution
  • Probe for HRMAS NMR measurements on gels
  • Probes for MAS NMR measurements on solid materials
• 400 MHz Unity INOVA 400 WB NMR spectrometer (Varian)
  • Probes for solution-state and solid-state NMR measurement

Explore our full range of analytical services