31574-87-5Relevant articles and documents
Synthesis and optical and electrochemical properties of a bispyrimidinium-dibenzothiophene-S,S-dioxide-based cationic conjugated polymer
Chen, Guiting,Yang, Wei,Zhang, Bin
, p. 2649 - 2655 (2017)
A novel n-type cationic conjugated polymer (PFSOmiCl), consisting of bispyrimidinium-dibenzothiophene-S,S-dioxide and fluorene scaffolds, was developed from its polymeric precursor (PFSOmi) through an intramolecular cyclization reaction. In comparison with PFSOmi, PFSOmiCl exhibits significant bathochromical absorption and photoluminescence spectra in both solution and film form, as well as a more hydrophilic film surface. Cyclic voltammetry tests demonstrate that PFSOmiCl possesses a deep lowest unoccupied molecular orbital (LUMO) energy level of??4.18?eV, which is comparable to the LUMO energy levels of common fullerene derivatives. These unique properties endow PFSOmiCl with great utilization potential in organic optoelectronic devices. Moreover, this research offers a novel guideline for designing new conjugated polyelectrolytes.
High-performance bipolar host materials for blue TADF devices with excellent external quantum efficiencies
Kang, Ju Sik,Hong, Tae Ryang,Kim, Hyung Jong,Son, Young Hoon,Lampande, Raju,Kang, Byoung Yeop,Lee, Chiho,Bin, Jong-Kwan,Lee, Bang Sook,Yang, Joong Hwan,Kim, Jinwuk,Park, Sungnam,Cho, Min Ju,Kwon, Jang Hyuk,Choi, Dong Hoon
, p. 4512 - 4520 (2016)
New bipolar host molecules composed of carbazole, pyridoindole, and dibenzothiophene (DBT) were synthesized for blue thermally activated delayed fluorescence (TADF)-based organic light-emitting diodes (OLEDs). 2,8-Di(9H-carbazol-9-yl)dibenzo[b,d]thiophene, 9-(8-(9H-carbazol-9-yl)dibenzo[b,d]thiophen-2-yl)-9H-pyrido[2,3-b]indole, and 2,8-bis(9H-pyrido[2,3-b]indol-9-yl)dibenzo[b,d]thiophene were prepared based on the selective reactivity at the 2,8-positions of DBT. The new symmetric and asymmetric host materials exhibited high triplet energies (2.89-2.95 eV). 4,5-Di(9H-carbazol-9-yl)phthalonitrile (2CzPN) was selected as an emitting dopant for achieving sky-blue emissions in TADF-OLEDs. 2CzPN-doped TADF-OLEDs, whose configuration is ITO (50 nm)/HATCN (7 nm)/TAPC (75 nm)/host:6% 2CzPN (20 nm)/TmPyPB (50 nm)/LiF (15 nm)/Al (100 nm), showed low driving voltages and high external quantum efficiencies (EQEs). These results are attributed to the well-controlled bipolar character of the host giving a better charge balance in the emitting layer. In particular, the device containing ZDN:6% 2CzPN showed an unprecedentedly high EQE of 25.7% (at 0.074 mA cm-2).
Novel thienyl-dibenzothiophene oligomers end-capped by hexylphenyl groups as potential organic semiconductor materials
Duan, Zongfan,Hoshino, Daiki,Ohuch, Hirokuni,Yanagi, Yuichiro,Nishioka, Yasushiro,Yang, Zhigang,Hirao, Toshio,Taguchi, Mitsumasa
, p. 28 - 33,6 (2012)
Novel thienyl-dibenzothiophene oligomers end-capped by hexylphenyl groups, 2,8-bis[5-(4-n-hexylphenyl)-2-thienyl]dibenzothiophene (28HPTDBT) and 3,7-bis[5-(4-n-hexylphenyl)-2-thienyl]dibenzothiophene (37HPTDBT), have been synthesized using Stille cross-coupling reactions. Newly synthesized oligomers were investigated by Ultraviolet-visible (UV-vis) and photoluminescence (PL) spectroscopy, cyclic voltammogram, and thermal analysis. Strong intermolecular-interactions, appropriate energy band gaps and low HOMO energy levels imply that the two oligomers are promising candidate materials for durable organic electronic devices.
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Gilman,Ingham
, p. 4982 (1951)
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A Family of Superhelicenes: Easily Tunable, Chiral Nanographenes by Merging Helicity with Planar π Systems
Amsharov, Konstantin Y.,B?nisch, Simon,G?rling, Andreas,Guldi, Dirk M.,Haines, Philipp,Hampel, Frank,Jelfs, Kim E.,Jux, Norbert,Nelson, Jenny,Reger, David,Schmidt, Julia A.,Ullrich, Tobias
supporting information, p. 18073 - 18081 (2021/07/16)
We designed a straightforward synthetic route towards a full-fledged family of π-extended helicenes: superhelicenes. They have two hexa-peri-hexabenzocoronenes (HBCs) in common that are connected via a central five-membered ring. By means of structurally altering this 5-membered ring, we realized a versatile library of molecular building blocks. Not only the superhelicene structure, but also their features are tuned with ease. In-depth physico-chemical characterizations served as a proof of concept thereof. The superhelicene enantiomers were separated, their circular dichroism was measured in preliminary studies and concluded with an enantiomeric assignment. Our work was rounded-off by crystal structure analyses. Mixed stacks of M- and P-isomers led to twisted molecular wires. Using such stacks, charge-carrier mobilities were calculated, giving reason to expect outstanding hole transporting properties.
Small molecule light-emitting material based on naphthothiodibenzofuran unit, preparation method and applications thereof
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Paragraph 0059-0062, (2020/03/06)
The invention discloses a small molecule light-emitting material based on a naphthothiodibenzofuran unit, a preparation method and applications thereof, wherein the naphthothiodibenzofuran unit is beneficial to improving the electron affinity and promoting the injection and transmission of electrons, and has high fluorescence efficiency and high chemical stability. According to the invention, thesmall molecule light-emitting material based on the naphthothiodibenzofuran unit is obtained through a Suzuki or C-N coupling reaction, and has high thermal stability, good film-forming property and good dissolvability; and after the small molecule light-emitting material based on the naphthothiodibenzofuran unit is dissolved by adopting a common organic solvent, and the light emitting layer of alight-emitting diode is prepared through spin coating, vacuum evaporation, ink-jet printing or printing film formation.
Structural controlled pure metallo-triangular assembly through bisterpyridinyl Dibenzo[b,d]thiophene, Dibenzo[b,d]furan and Dibenzo[b,d]carbazole
Liu, Qianqian,Yang, Xiaoyu,Wang, Meng,Liu, Die,Chen, Mingzhao,Wu, Tun,Jiang, Zhiyuan,Wang, Pingshan
supporting information, p. 2400 - 2405 (2019/03/14)
A novel family of metallocycles was constructed by a one-pot self-assembly of three analogous bis(terpyridine) ligand monomers L1-L3, having different bent angles, with metal ions (Zn2+ or Cd2+). The dibenzo[b,d]thiophene-containing ligand L3 assembled with the metal ions to form a single trimer, whereas the dibenzo[b,d]furan-containing ligand L2 and dibenzo[b,d]carbazole-containing ligand L1 formed a mixture of trimers and tetramers. Heteroatoms (N, O, S) significantly contributed to the molecular size of the assemblies, owing to the bent angle of the bis-terpyridines ligands.
