Jokinen netted the game's first goal in the opening period, but the Hurricanes fought back to forge a 2-2 deadlock on Nathan Gerbe's tally 3:13 into the third.
The Pens, however, finished the contest with three straight goals, ignited when Jokinen took a pass from Evgeni Malkin in the left circle and sent a wrist shot into the net less than 2 minutes after Gerbe's tally.
Tanner Glass later made it 4-2 and Jokinen finished his hat trick with a power-play marker as Pittsburgh improved to 3-0-0 starting the season.
Marc-Andre Fleury turned aside 32-of-34 shots to notch the victory.
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