TY - JOUR

T1 - Synthesis, luminescence and charge transport properties of furan/phenylene co-oligomers: The study of conjugation length effect

AU - Kazantsev, Maxim S.

AU - Beloborodova, Alina A.

AU - Kuimov, Anatoly D.

AU - Koskin, Igor P.

AU - Frantseva, Ekaterina S.

AU - Rybalova, Tatyana V.

AU - Shundrina, Inna K.

AU - Becker, Christina S.

AU - Mostovich, Evgeny A.

PY - 2018/5/1

Y1 - 2018/5/1

N2 - Heteroaryl-containing co-oligomers are considered among the most promising materials for organic optoelectronics. In this work we synthesized a series of linear furan/phenylene co-oligomers (FPs) with different molecular length and studied their structure, luminescence and charge transport properties. The X-ray diffraction experiments revealed the higher distortion of molecular planarity for the longer FPs which is assigned to the crystal environment effect. All FPs demonstrated stability and high photoluminescence quantum yield (PL QY) both in solution and vapor-grown single crystals. The absolute PL QY as high as 70% was demonstrated for FP6 single crystal. The top-contact top-gate organic field-effect transistors (OFETs) demonstrated virtually the same mobility ∼0.35 cm2/Vs for a FPs with different conjugation chain. However the threshold voltage for the studied OFETs was demonstrated to be significantly reduced for a co-oligomer FP7 with longer conjugation chain. Thus we conclude that the increase of conjugation chain for co-oligomers does not benefit an increase of charge carrier mobility but improve the crystal/dielectric interface.

AB - Heteroaryl-containing co-oligomers are considered among the most promising materials for organic optoelectronics. In this work we synthesized a series of linear furan/phenylene co-oligomers (FPs) with different molecular length and studied their structure, luminescence and charge transport properties. The X-ray diffraction experiments revealed the higher distortion of molecular planarity for the longer FPs which is assigned to the crystal environment effect. All FPs demonstrated stability and high photoluminescence quantum yield (PL QY) both in solution and vapor-grown single crystals. The absolute PL QY as high as 70% was demonstrated for FP6 single crystal. The top-contact top-gate organic field-effect transistors (OFETs) demonstrated virtually the same mobility ∼0.35 cm2/Vs for a FPs with different conjugation chain. However the threshold voltage for the studied OFETs was demonstrated to be significantly reduced for a co-oligomer FP7 with longer conjugation chain. Thus we conclude that the increase of conjugation chain for co-oligomers does not benefit an increase of charge carrier mobility but improve the crystal/dielectric interface.

KW - Charge carrier mobility

KW - Conjugation length effect

KW - Furan/phenylene Co-Oligomers

KW - Highly-emissive single crystal

KW - Luminescent semiconductor

KW - ORGANIC SINGLE-CRYSTALS

KW - FURANS

KW - MOBILITY

KW - SEMICONDUCTORS

KW - ARYLATION

KW - FIELD-EFFECT TRANSISTORS

KW - PACKING

KW - DERIVATIVES

UR - http://www.scopus.com/inward/record.url?scp=85042115691&partnerID=8YFLogxK

U2 - 10.1016/j.orgel.2018.01.010

DO - 10.1016/j.orgel.2018.01.010

M3 - Article

AN - SCOPUS:85042115691

VL - 56

SP - 208

EP - 215

JO - Organic Electronics: physics, materials, applications

JF - Organic Electronics: physics, materials, applications

SN - 1566-1199

ER -