ov ▁was ▁invited ▁in ▁ 1 9 3 2 ▁to ▁work ▁along ▁with ▁Vik tor ▁U st - K ach k int se v ▁and ▁Roman ▁Mer z lin ▁at ▁the ▁Institute ▁of ▁Chem ical ▁Def ence . ▁ ▁Tr if on ov ▁def ended ▁his ▁doctor al ▁dis sert ation , ▁Phys ical ▁and ▁chemical ▁analysis ▁of ▁binary ▁liquid ▁systems ▁in ▁the ▁form ▁of ▁surface ▁t ension ▁is oth erm s , ▁in ▁ 1 9 4 0 ▁in ▁Rost ov - on - Don . ▁Following ▁this , ▁in ▁ 1 9 4 1 , ▁Tr if on ov ▁became ▁a ▁Doctor ▁of ▁Chem ical ▁Sciences . ▁ ▁From ▁ 1 9 3 9 ▁to ▁ 1 9 4 5 , ▁he ▁was ▁the ▁head ▁of ▁the ▁department ▁of ▁physical ▁and ▁col lo id ▁chem istry ▁at ▁Rost ov ▁State ▁University , ▁and ▁from ▁ 1 9 4 5 ▁to ▁ 1 9 4 8 , ▁he ▁head ed ▁the ▁department ▁of ▁physical ▁and ▁col lo id ▁chem istry ▁of ▁Kaz an ▁University . ▁Con current ly ▁with ▁these ▁positions , ▁Tr if on ov ▁led ▁the ▁physical ▁chem istry ▁department ▁at ▁the ▁Kaz an ▁branch ▁of ▁the ▁USS R ▁Academy ▁of ▁Sciences . ▁ ▁Con v iction ▁ ▁In ▁ 1 9 3 5 , ▁Tr if on ov ▁was ▁conv icted ▁of ▁esp ion age . ▁Aleks andr ▁Sol z hen its yn , ▁who ▁was ▁a ▁student ▁at ▁Rost ov ▁University ▁from ▁ 1 9 3 6 ▁to