ost ruct ures ▁and ▁their ▁potential ▁applications ▁in ▁organ ic ▁electron ics . ▁ ▁Early ▁life ▁and ▁education ▁ ▁M üll en ▁was ▁born ▁in ▁C ologne . ▁He ▁studied ▁chem istry ▁there ▁and ▁was ▁awarded ▁a ▁Ph D ▁in ▁ 1 9 7 1 ▁under ▁the ▁super vision ▁of ▁Fab ian ▁G erson ▁at ▁the ▁University ▁of ▁Bas el . ▁He ▁special ized ▁in ▁electron ▁spin ▁reson ance ▁spect ro sc opy ▁and ▁his ▁dis sert ation ▁was ▁on ▁nuclear ▁reson ance ▁and ▁electron ▁spin ▁reson ance ▁spect ro scop ic ▁studies ▁on ▁brid ged ▁ann ul enes . ▁He ▁then ▁completed ▁post - do ctor al ▁studies ▁at ▁the ▁E TH ▁Zur ich ▁under ▁Jean ▁François ▁Michel ▁O th ▁( 1 9 2 6 - 2 0 0 3 ) ▁and ▁received ▁his ▁hab il itation ▁in ▁ 1 9 7 7 ▁with ▁a ▁th esis ▁on ▁dynamic ▁N MR ▁spect ro sc opy ▁and ▁electro chem istry . ▁ ▁Research ▁career ▁ ▁In ▁ 1 9 7 9 ▁he ▁became ▁professor ▁of ▁organ ic ▁chem istry ▁at ▁the ▁University ▁of ▁C ologne , ▁in ▁ 1 9 8 3 ▁he ▁went ▁to ▁the ▁University ▁of ▁Main z ▁as ▁a ▁professor . ▁Since ▁ 1 9 8 9 ▁he ▁has ▁been ▁director ▁and ▁scientific ▁member ▁of ▁the ▁Max ▁Plan ck ▁Institute ▁for ▁Pol ym er ▁Research . ▁In ▁ 2 0 1 6 ▁he ▁became ▁emer it us . ▁Since ▁ 1 9 9 5 ▁he ▁has ▁been ▁honor ary ▁professor