Chapter 7: Manipulating Spin Order by J-synchronised Echo Schemes

This chapter discusses the use of J-synchronised spin echo schemes with the purpose to manipulate singlet order and their ability to interconvert transverse and singlet order in a very selective manner. The combination of J-synchronised spin echo schemes with pulsed field gradient is also discussed in the context of spatial localisation of singlet order. Examples of the use of these pulsed schemes in conjunction with dissolution dynamic nuclear polarisation and para-hydrogen induced polarisation are discussed and experimental evidence reported.