Silole Derivatives as Efficient Electron Transporting Materials

Tamao, Kohei; Uchida, Masaya; Izumizawa, Takenori; Furukawa, Katsuko; Yamaguchi, Shigehiro

doi:10.1021/ja962829c

Cited by 443 publications

(295 citation statements)

References 16 publications

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“…Following the successful incorporation of thiophene oligomers and polymers in opto-electronic devices, [1][2][3] new derivatives featuring B [4,5], N [6,7], O [8,9], Si [10] or P [11][12][13][14][15][16][17][18][19] have been developed. In particular, siloles (silacyclopentadienes) found promising applications in the field of organic light emitting devices (OLEDs) [20][21][22][23]. Two main reasons explain the good behaviour of siloles in these devices.…”

Section: Introductionmentioning

confidence: 99%

Blue Electrofluorescence Properties of Furan–Silole Ladder Pi-Conjugated Systems

et al. 2018

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Abstract:A synthetic route to novel benzofuran fused silole derivatives is described and the new compounds were fully characterized. These compounds showed optical and electrochemical properties that differ from their benzothiophene analog. Preliminary results show that these derivatives can be used as blue emitters in organic light emitting devices (OLEDs) illustrating the potential of these new compounds for opto-electronic applications.

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Section: Introductionmentioning

confidence: 99%

Blue Electrofluorescence Properties of Furan–Silole Ladder Pi-Conjugated Systems

et al. 2018

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“…Similarly one equivalent of 2,2'-dibromobiphenyl reacting with two equivalents of n-butyllithium further on one hand with one equivalent of silicon tetrachloride gives to 1,1-dichloro-1-silafluorene [4,5] (Fig. 3) with 70% yield and on the other hand with one equvalent of dichloro dimethyl silane gives to 1,1-dimethyl-1-silafluorene (Fig.…”

Section: Synthesis and Characterizationmentioning

confidence: 99%

“…Silicon-containing π-conjugated compounds, especially siloles, have emerged as a new class of electrolyte materials with good electron transport properties in OLEDs [1][2][3][4][5][6][7][8][9][10][11][12] . The reason grounds that siloles have a relatively lowest unoccupied molecular orbital (LUMO) level due to the σ*-π* conjugation between the σ* orbitals of silicon and the π*orbital of the butadiene fragment, resulting in a high electron affinity.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Photoluminescence of Silole Derivatives

Sharma¹,

Lee²,

Um³

et al. 2013

Journal of the Chosun Natural Science

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“…Recently, silole derivatives have been proposed as a new class of electron transport and highly fluorescent materials. [14][15][16][17][18] Siloles have large electron affinities due to the σ*-π* conjugation arising from the interaction between the σ* orbital of the two exocyclic Si-C σ-bonds on the silole ring and the π* orbital of the butadiene moiety. [14,15] This interaction results in lowering the position of the lowest unoccupied molecular orbital (LUMO).…”

Section: Introductionmentioning

confidence: 99%

Efficient molecular organic light emitting diodes based on silole derivatives

et al. 2003

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We report the performance of molecular organic light-emitting diodes (MOLEDs) using silole derivatives as emissive and electron transport materials. Two siloles, namely 2,5-di-(3-biphenyl)-1,1-dimethyl-3,4-diphenylsilacyclopentadiene (PPSPP) and 1,2-bis(1-methyl-2,3,4,5,-tetraphenylsilacyclopentadienyl)ethane (2PSP), with high PL quantum yields of 94% and 85%, respectively, were used as emissive materials. Another silole, namely 2,5-bis-(2',2''-bipyridin-6-yl)-1,1-dimethyl-3,4-diphenylsilacyclopentadiene (PyPySPyPy), was used as the electron transport material. MOLEDs using these two siloles and NPB as the hole transport material show a low operating voltage of approximately 4.5 V at a luminance of 100 cd/m 2 and high external electroluminescence (EL) quantum efficiencies of 3.4% and 3.8%, respectively, at 100 A/m 2 .MOLEDs based on PPSPP exhibit a red-shifted EL spectrum which is assigned to an exciplex formed at the PPSPP:NPB interface. Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number.

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Silole Derivatives as Efficient Electron Transporting Materials

Cited by 443 publications

References 16 publications

Blue Electrofluorescence Properties of Furan–Silole Ladder Pi-Conjugated Systems

Blue Electrofluorescence Properties of Furan–Silole Ladder Pi-Conjugated Systems

Synthesis and Photoluminescence of Silole Derivatives

Efficient molecular organic light emitting diodes based on silole derivatives

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