Gary James Richards

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Questions related from Gary James Richards

How to calculate pKa of an acid from a UV/Vis titration with DBU in THF?

I titrated an acid using DBU in THF. Just added aliquots of DBU soln. to my acid in THF solution and measured the change in UV/vis absorption. How can I use this data to calculate the pKa of my...

04 April 2016 1,706 2 View

What is the weakest base I can use to deprotonate an alcohol in DMF solvent?

I'm trying to make a crown-ether-like compound by reaction of an alcohol with a tosylate in an SN2 type reaction. My alcohol is only soluble in the likes of warm DMF, DMSO or Pyridine. I'm...

20 November 2015 3,698 15 View

Can you explain the triplet:singlet 3:1 ratio produced when holes and electrons combine in OLEDs?

In an OLED, holes and electrons combine to form an excited state with a triplet:singlet ratio of 3:1. Can someone explain to me (in a way a chemist, not a mathematician or physicist, can...

20 March 2015 1,051 2 View