Publications by authors named "Daniel P Guest"
Article Synopsis
- Researchers developed a new method to synthesize 9 core-functionalised naphthalene diimide (c-NDI) compounds using a three-step, solvent-free process that activates chemicals mechanically.
- They achieved selective dibromination of naphthalenetetracarboxylic dianhydride in a vibratory ball mill, producing a key intermediate (2,6-dibromonaphthalenediimide) quickly and efficiently within 5 hours, significantly faster than traditional methods.
- The study also successfully executed rapid Heck-type cross coupling reactions with various styrene residues, resulting in good yields of c-NDIs without the need for extra heating or solvents, making the process robust against environmental conditions.
Solvent-free synthesis by using a vibratory ball mill (VBM) offers the chance to access new chemical reactivity, whilst reducing solvent waste and minimising reaction times. Herein, we report the core functionalisation of N,N'-bis(2-ethylhexyl)-2,6-dibromo-1,4,5,8-naphthalenetetracarboxylic acid (Br -NDI) by using Suzuki, Sonogashira and Buchwald-Hartwig coupling reactions. The products of these reactions are important building blocks in many areas of organic electronics including organic light-emitting diodes (OLEDs), organic field-effect transistors (OFETs) and organic photovoltaic cells (OPVCs).
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