There is a little metal tab on the side of each outlet (brass side i think) that connects the two receptacles. If that tab is removed, the the outlets are independent. Connect one to the switch and the other to constant power. This can be done with any common outlet. If you need details on how to do it, just ask.
Just do a Google search on wireless remote control outlets US and you'll find a lot of choices. I can't speak to the quality and durability of any of these, but I'm sure you can find online reviews once you zero on a couple of choices.