How to change prefix key of tmux to Ctrl?

Question

I'd like to change prefix key of tmux from C-b to Ctrl only and tried following in .tmux.conf. But it doesn't work.

unbind C-b
set -g prefix C
bind C send-prefix 

Thanks

Answer 1

As explained in another answer at Unix Stack Exchange, this can't be done:

Ctrl and Shift are modifiers. These keys aren't transmitted to applications running in a terminal. Rather, when you press something like Ctrl+Shift+A, this sends a character or a character sequence at the time you press the A key.