I don't think that there is, but why would you need an escape sequence for a printable character? Wouldn't you just append/prepend/concatenate it to your string?
[red]"... isn't sanity really just a one trick pony anyway?! I mean, all you get is one trick, rational thinking, but when you are good and crazy, oooh, oooh, oooh, the sky is the limit!" - The Tick[/red]