Inter boss Mourinho oversaw a 3-2 aggregate win following a 1-0 second-leg defeat at the Nou Camp after being almost constantly jeered by the home crowd.
Mourinho is disparagingly known among some Barca fans as 'the translator', having begun his journey in football management in that role alongside Bobby Robson at the Nou Camp in the 1990s, before working as a coach under Louis van Gaal for three seasons.
The Portuguese, who will now face his old mentor Van Gaal as Inter prepare to take on Bayern Munich in the final in Madrid on Saturday, 22 May, knows the chances of him ever landing the top job with the Catalan giants are now virtually non-existent.
Mourinho, who also crossed swords with Barca while in charge at Chelsea, raced onto the pitch to celebrate Inter's aggregate success at the final whistle after his team were reduced to ten from the 28th minute when Thiago Motta picked up a second yellow card for pushing Sergio Busquets in the neck.
Mourinho was greeted by a hail of bottles from the stands and he said: "I'm not stupid enough to think that this hate can be turned into love. I respect Barca and I'll never forget what the club gave me in the four years I was here, but something has been created around me that is hard to make positive," he said.
"It is clear I will end my career without having coached Barca."
Last night's match was the tenth between Mourinho and Barcelona in the last six years, with the Catalans having faced Chelsea on six occasions and Inter four times. Six of those matches have come in knockout ties, with Mourinho having now eliminated the Catalans from Europe on two occasions.
"If I never beat them, they wouldn't hate me," Mourinho said. And the Inter coach believes he is now more unpopular even than former Barca winger Luis Figo, who left the club as a player to join Madrid and was never forgiven by the Catalan faithful.
"Figo (who returned to the Nou Camp last night as an ambassador for Inter) told me he was calm and relaxed because I was the one they hate now, because I was their new enemy," the Inter coach said.
Mourinho claimed the key to victory was relinquishing possession at the Nou Camp.
"We didn't want the ball because when Barcelona press and win the ball back, we lose our position – I never want to lose position on the pitch so I didn't want us to have the ball, we gave it away," he said.
Busquets went down theatrically holding his face.
Motta was disgusted by the player's reaction. "He always does it, I have seen it on TV and he is holding his face and then looking at the referee – it is terrible behaviour."