title: Accordion-optimized DEPT experiments.
abstract: In this contribution, a pulse sequence is described for recording accordion-optimized DEPT experiments. The proposed ACCORDEPT experiment detects a wide range of one-bond coupling constants using accordion optimization. As a proof of concept, this strategy has been applied to a mesogen containing a large range of one-bond (1)J(CH) coupling constants associated with the various structural elements. The ACCORDEPT experiment afforded significant enhancements for the resonances with the larger (1)J(CH) couplings, similar SNR for aliphatic resonances, but reduced SNR for aliphatic resonances as compared with the standard DEPT experiment. In addition, the ACCORDEPT is straightforward to implement, does not require any supplementary calibration procedures and can be used under automated conditions without difficulty by inexperienced users.
authors.affiliation: Service Analytique Facultaire, Institut de Chimie, Université de Neuchâtel, Avenue de Bellevaux 51, Case postale 158, CH-2009 Neuchâtel, Switzerland. julien.furrer@unine.ch
authors.forename: Julien
authors.initials: J
authors.lastname: Furrer
authors.forename: Sebastiano
authors.initials: S
authors.lastname: Guerra
authors.forename: Robert
authors.initials: R
authors.lastname: Deschenaux
mesh_terms: D004952:Esters / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods* / Q000592:standards; D015394:Molecular Structure; D012015:Reference Standards
chemical_list: D004952:Esters