Synthesis and properties of phenothiazylene vinylene and bithiophene-based copolymers for organic thin film transistors

Kim, Junho; Seo, Young-Hoon; Lee, Woo Hyung; Hong, Yongtaek; Lee, Sang Kyu; Shin, Won-Suk; Moon, Sang‐Jin; Kang, In‐Nam

doi:10.1016/j.synthmet.2010.10.036

Cited by 12 publications

(4 citation statements)

References 27 publications

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“…Owing to electron-rich nitrogen and sulfur heteroatoms in a heterocyclic structure, phenothiazine (PTZ) has been well-known as an excellent electron-donating chromophore. Phenothiazine-based semiconductors are widely utilized in organic electronic devices, such as light-emitting devices, photovoltaic cells, thin film transistors, and dye-sensitized solar cells . Nonplanar butterfly conformation in phenothiazine can inhibit molecular aggregation and increase solubility of the polymers.…”

Section: Introductionmentioning

confidence: 99%

Conjugated Polymers of Rylene Diimide and Phenothiazine for n-Channel Organic Field-Effect Transistors

Zhou

Wen

et al. 2012

Macromolecules

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A series of new n-type copolymers based on perylene diimide (PDI) or naphthalene diimide (NDI) and phenothiazine (PTZ) with different side chain length and molecular weight have been designed and synthesized by Pdcatalyzed Suzuki coupling polymerization with or without phasetransfer catalyst Aliquat 336. The effects of main chain, side chain, and molecular weight on the thermal, optical, electronic, and charge transport properties of the polymers have been investigated. Aliquat 336 improves molecular weight as well as reduces polydispersity index of the polymers. All the polymers exhibit a broad absorption extending from 300 to 900 nm. The main chain and side chain structure and molecular weight have minor effects on the HOMO (−5.8 to −5.9 eV) and LUMO (−3.7 to −3.8 eV) levels of the polymers. n-Channel field-effect transistors with bottom-gate top-contact geometry based on these copolymers exhibit electron mobilities as high as 0.05 cm 2 V −1 s −1 and on/off ratios as high as 10 5 in nitrogen, which are among the best reported for rylene diimide-based polymers under the same test conditions.

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Section: Introductionmentioning

confidence: 99%

Conjugated Polymers of Rylene Diimide and Phenothiazine for n-Channel Organic Field-Effect Transistors

Zhou

Wen

et al. 2012

Macromolecules

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“…34) Melting points were determined in an open capillaries using Electrothermal (IA 9100) digital melting point apparatus and are uncorrected. IR spectra were recorded on Bruker (Tensor 37) FT-IR spectrometer using KBr pellets.…”

Section: Methodsmentioning

confidence: 99%

Synthesis and Antiproliferative Activity of Novel α-Aminophosphonates

2012

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A novel series of carbazole-based α-aminophosphonates were synthesized by three component coupling of 6-bromo-9-ethyl-9H-carbazole-3-carbaldehyde, amine and diethyl phosphite using polyethylene glycol (PEG-400) as a green reaction media. The antiproliferative activity of these molecules was evaluated against three cancer cell lines. Of these, compounds 4c, 4e and 4m were found to exhibit good antiproliferative activity against three cancer cells, A549, MCF-7, and NCI-N87.

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“…The D-A type molecules have attracted much attention because of their great potential applications as photoactive materials in molecular electronics, Owing to the advantages of π-conjugated molecules, ease of molding, and outstanding physical characteristics, they have found application to organic photovoltaic cells(OPVs) [1] , organic light emitting diodes(OLEDs) [2][3] , organic thin film transistors (OTFTs) [4][5][6] , and organic transparent conducting electrodes [7] . One of the most successful approaches to these low band gap polymers is the application of an alternating sequence of donor-acceptor (D-A) units in π-conjugated molecules [8] , since the semiconducting behavior of π-conjugated molecules originates from the dispersion of the HOMO and LUMO levels of the monomer into a valence and a conduction band upon chain elongation, a narrow band gap can indeed be obtained by starting from a monomer that already has a narrow HOMO-LUMO energy separation.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Small Functional Molecule Composed of BseDz

Li¹,

Cheng²,

Wen³

2015

Proceedings of the 2015 International Symposium on Energy Science and Chemical Engineering

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Abstract. Novel organic conjugated molecule composed of central benzoselenadiazole (BseDZ) units as electron acceptor and two pyrrole groups as electron donors was prepared via the Stille coupling reaction. The molecular structure was verified by 1 HNMR and 13 CNMR. UV-vis spectroscopy showes that molecule has broad absorption spectrum and a low band gap by theoretical calculation, The fluorescence spectra exhibit strong emission peaks in the organic light regions. Cyclic voltammetry exhibited that molecule have reversible redox curve, property of electrochemical is stable. which suggest that it has potential application value in photovoltaic material. IntroductionThe D-A type molecules have attracted much attention because of their great potential applications as photoactive materials in molecular electronics, Owing to the advantages of π-conjugated molecules, ease of molding, and outstanding physical characteristics, they have found application to organic photovoltaic cells (OPVs)

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Synthesis and properties of phenothiazylene vinylene and bithiophene-based copolymers for organic thin film transistors

Cited by 12 publications

References 27 publications

Conjugated Polymers of Rylene Diimide and Phenothiazine for n-Channel Organic Field-Effect Transistors

Conjugated Polymers of Rylene Diimide and Phenothiazine for n-Channel Organic Field-Effect Transistors

Synthesis and Antiproliferative Activity of Novel α-Aminophosphonates

Synthesis and Characterization of Small Functional Molecule Composed of BseDz

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