Just an FYI:
Most gases closely follow what is known as the "Ideal Gas Law": PV = nRT, where P = pressure, V = Volume, n = number of moles (the amount of molecules of the gas - for a tire, this is a constant), R = gas constant, T = temperature.
As gasses, nitrogen, oxygen, and even water vapor closely follow this formula. There is plenty of data to support this.
So, - No!! - using nitrogen in your tires doesn't stop pressure buildup. It doesn't change the pressure buildup. It has absolutely no affect on pressure or pressure buildup.
The only affect it has is nitrogen reduces the possibility of water condensing inside the tire - and if you use pressurized air out of a tank, the water should have already been condensed. Yes, it's possible to introduce water (in liquid form) into the tire during the initial inflation, but that water will eventually evaporate.
I've written up a web page on the subject of nitrogen inflation:
Barry's Tire Tech - Nitrogen Inflation