%AKarunathilaka, Dilan%ARajapakse, R.%AHardin, April%ASexton, Thomas%ASparks, Nicholas%AMosely, Jacquelyn%ARheingold, Arnold%AHammer, Nathan%ATschumper, Gregory%AWatkins, Davita%BJournal Name: CrystEngComm; Journal Volume: 24; Journal Issue: 25 %D2022%I %JJournal Name: CrystEngComm; Journal Volume: 24; Journal Issue: 25 %K %MOSTI ID: 10345438 %PMedium: X %TCorrelation of solid-state order to optoelectronic behavior in heterocyclic oligomers %XA longstanding challenge in the field of optoelectronic materials, the effects of solid-state arrangement and morphology are still a prominent factor associated with small-molecule and polymer-based device performance. Here, mixed heterocyclic aromatic oligomers containing thiophene, furan and pyrazine are prepared alongside their methylated congeners. Their solution and solid-phase properties were studied via spectroscopic, electrochemical and single-crystal X-ray diffraction (XRD) analysis. Comparative analysis between solid-state packing arrangements and photophysical properties revealed optical band gaps as low as 1.7 eV with Stokes-shifts up to 130 nm and quantum yields of 12%. Results of the study aid in further understanding the effects of molecular and solid-state arrangements that give rise to unique optical and photophysical properties critical to enhancing optoelectronic behavior. %0Journal Article