▁at ▁the ▁University ▁of ▁Main z ▁and ▁at ▁the ▁G uten berg ▁Research ▁College ▁of ▁the ▁University ▁of ▁Main z . ▁He ▁is ▁an ▁Associ ate ▁Editor ▁of ▁the ▁Journal ▁of ▁the ▁American ▁Chem ical ▁Society ▁ ▁His ▁research ▁interests ▁are ▁in ▁the ▁field ▁of ▁prepar ative ▁macro - ▁and ▁su pr am ole cular ▁chem istry . ▁Among ▁other ▁things , ▁his ▁group ▁has ▁succeeded ▁in ▁synth es izing ▁and ▁character izing ▁h ither to ▁un att ain able ▁large ▁poly cyc lic ▁a rom at ics ▁such ▁as ▁super phen al ene , ▁which ▁has ▁a ▁mole cular ▁mass ▁of ▁ 1 1 8 2 ▁g · m ol − 1 ▁and ▁consists ▁of ▁ 3 4 ▁cond ensed ▁ben z ene ▁rings . ▁▁▁ ▁He ▁has ▁developed ▁small ▁disc - like ▁organ ic ▁building ▁blocks ▁using ▁alk yl - subst it uted ▁hex ab enz oc or on ene , ▁and ▁in ▁particular ▁H BC - C 1 2 ▁- ▁which ▁self - ass emb les ▁into ▁cry st all ine ▁liquid - phase ▁structures ▁( column ar ▁liquid ▁cry st als ) ▁as ▁potential ▁organ ic ▁field - effect ▁trans ist ors . ▁The ▁considered ▁two - dimensional ▁ben z ene ▁ring ▁structures ▁are ▁examples ▁of ▁sub un its ▁of ▁graph ene ▁l att ices ▁( graph ene ▁nan ost ruct ures ). ▁The ▁graph ene - like ▁structures ▁synth es ized ▁and ▁investig ated ▁by ▁M üll en ▁include ▁two - dimensional ▁bands ▁of ▁less ▁than ▁ 5