Conjugated Organosilicon Materials for Organic Electronics and Photonics

Ponomarenko, Sergei A.; Kirchmeyer, Stephan

doi:10.1007/12_2009_48

Cited by 70 publications

(33 citation statements)

References 213 publications

(257 reference statements)

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“…It was purified by column chromatography on silica gel (eluent: toluene-hexane mixture, 1:3) followed by recrystallization and preparative GPC chromatography to yield 0.64 g (32%) of pure product as a yellow solid. 1 …”

Section: Methodsmentioning

confidence: 99%

“…Currently organic luminophores are widely studied due to their unique optical properties that lead to their change to increasing applications as functional materials for organic photonics and optoelectronics [1][2][3][4][5][6][7]. A number of linear [8], star-shaped [9][10][11] and dendritic conjugated molecules [12][13][14], containing silicon atoms and showing good luminescent properties are described in the literature.…”

Section: Introductionmentioning

confidence: 99%

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Influence of chemical structure of branched and dendritic organosilicon luminophores on their optical and thermal properties

Борщев¹,

Kleymyuk²,

Сурин³

et al. 2017

Organic Photonics and Photovoltaics

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Synthesis and investigation of optical and thermal properties of a homologous series of highly luminescent nanostructured organosilicon luminophores (NOLs) containing different donor to acceptor ratio (D:A) are reported. Each of the NOL consists of a 1,4-bis(5-phenylthienyl-2-yl)benzene (PTPTP) acceptor unit and four, six or twelve 2,2´-bithienyl donor fragments connected to each other through two or six silicon atoms. These complex molecules show a "molecular antenna" effect with high efficiency of intramolecular energy transfer about 97-98% combined with excellent photoluminescence (PL) quantum yield of 84-91% and fast PL decay time of 0.90-0.95 ns. A significant increase of the molar extinction coefficient from 94 000 to 257 000 M −1 cm −1 with increasing the D:A ratio from 4:1 to 12:1 was observed. It was found that increasing the branching extent in the NOLs prohibits their crystallization. Thermal gravimetric analysis (TGA) showed that all the NOLs reported, regardless of their branching extent, are thermally stable up to *Corresponding Author: Oleg V. Borshchev † : Oleg V. Borshchev:

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of chemical structure of branched and dendritic organosilicon luminophores on their optical and thermal properties

Борщев¹,

Kleymyuk²,

Сурин³

et al. 2017

Organic Photonics and Photovoltaics

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“…In this context, the incorporation of silicon or oxygen atoms into the π-fused framework as bridging moieties has become a fruitful strategy to produce new π-materials possessing superb photophysical and electronic properties [20][21][22][23][24][25] , which are difficult to achieve in carbon-based π-units. The longer C−Si bond length (C−Si vs. C−C: ca 1.87 Å vs. ca.…”

Section: Introductionmentioning

confidence: 99%

Silicon and Oxygen Synergistic Effects for Discovery of New High-Performance Nonfullerene Acceptors

Qin

Chen

Jia

et al. 2020

Preprint

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In organic electronics, aromatic fused-ring is the basic unit that provides π-electrons to construct solution-processable, lightweight, flexible semiconductors and governs the device performance in a wide range of new technologies. The main challenge on developing new π-skeletons for tuning the material properties is the limitation of available chemical approach. Herein, we addressed the problems on chemical synthesis and for the first time successfully synthesized two pentacyclic siloxy-bridged π-conjugated isomers (SiO5T-5 & SiO5T-10), for investigating the synergistic effects of Si and O atoms on the geometric and electronic influence of the π-units in organic electronics. Notably, the synthesis routes for both of SiO5T-5 and SiO5T-10 possess several advantages over the previous approaches for delivering conventional aromatic fused-ring such as environmentally benign tin-free synthesis, and less synthetic steps. To explore its potential application as photovoltaic materials, two isomeric A-D-A acceptors based on these two SiO5Ts isomers were developed, showing a decent device efficiency of 10%, which is higher than those of carbon and carbon-oxygen analogue-based PSCs. Our study indicates that the siloxy-bridged π-conjugated system is a potential donor core for photovoltaic materials. The silicon and oxygen synergistic effects presented herein would bring new vigor and vitality for further improving the performance of organic solar cells.

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“…11 Conjugated organosilicon materials are particularly promising for the organic electronics and photonics field. 12 The insertion of silicon atoms in conjugated organic motifs changes the HOMO and LUMO energy levels, creating a new broad class of important semiconductors. The 5-membered conjugated silacycle silole is a particularly interesting building block in this research area and in the development of silicon-containing polymers.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of silacyclopent-2-en-4-ols via intramolecular [2 + 2] photocycloaddition of benzoyl(allyl)silanes

et al. 2019

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Conjugated Organosilicon Materials for Organic Electronics and Photonics

Cited by 70 publications

References 213 publications

Influence of chemical structure of branched and dendritic organosilicon luminophores on their optical and thermal properties

Influence of chemical structure of branched and dendritic organosilicon luminophores on their optical and thermal properties

Silicon and Oxygen Synergistic Effects for Discovery of New High-Performance Nonfullerene Acceptors

Synthesis of silacyclopent-2-en-4-ols via intramolecular [2 + 2] photocycloaddition of benzoyl(allyl)silanes

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