Solution processable donor–acceptor oligothiophenes for bulk-heterojunction solar cells

Zhang, Weifeng; Tse, S. C.; Lü, Jianping; Tao, Ye; Wong, Man Shing

doi:10.1039/b926203b

Cited by 48 publications

(30 citation statements)

References 27 publications

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“…Wong et al have synthesized a series of D‐π‐A chromophores ( 40–44 ) connected with oligothiophenes (Figure ) . The palladium‐catalyzed Suzuki cross coupling of diphenylaminofluorenyl boronic acids with oligothiophenes gave desired diphenylaminofluorenyl‐substituted oligothiophenecarboxaldehydes in 75%–78% yields.…”

Section: Introductionmentioning

confidence: 99%

D‐π‐A Conjugated Molecules for Optoelectronic Applications

Kim

Lee

2015

Macromol. Rapid Commun.

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Dipolar chromophores consisting of electron donor (D) and electron acceptor (A) groups connected through a conjugated π-bridge have been actively studied and integrated in optoelectronic and electronic devices. Generally, such π-conjugated molecules provide substantial delocalization of π-electrons over the molecules. Here, a brief overview of recent research on D-π-A dipolar chromophores including their syntheses and several promising applications is reported, especially in nonlinear optical devices and organic photovoltaics. Structure/property relationships are discussed in order to exploit the potentials by tuning the π-electron density, polarizability, and HOMO-LUMO band gap of the chromophores. Some of the examples may well set the stage for chip-scale integration of optoelectronics as well as the realization of an important array of new device technologies.

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Section: Introductionmentioning

confidence: 99%

D‐π‐A Conjugated Molecules for Optoelectronic Applications

Kim

Lee

2015

Macromol. Rapid Commun.

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“…Besides, molecules using oligothiophene as a highly extended π-conjugated bridge not only broaden the absorption region but also promote strong π-π stacking of conjugated backbones [40][41][42][43][44][45]. The chemical structures of compounds using oligothiophene as π-linkage are shown in Fig.…”

Section: Oligothiophene-linkagementioning

confidence: 99%

π-Linkage effect of push-pull-structure organic small molecules for photovoltaic application

Yin

2016

Sci. China Mater.

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Much attention has been paid to the push-pullstructure organic small molecule (OSM) materials for photovoltaic (PV) application in the past decade, due to their facile reduction of energy band gap (Eg) and effective control of PV properties. π-bridge plays an important role in the push-pull-structure OSMs since an appropriate π-linkage is crucial for improving the PV performance of organic solar cells (OSCs). In this review, various π-bridge groups (thiophene, alkene, alkyne, arene and heterocycle) and the pertinent π-linkage effect will be systematically summarized. These results suggest that the in-depth study of the π-linkage effect is essential to deeply understanding the relationship between the molecular structure and property, thus improving PV performance.

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“…[28][29][30] Furthermore, carbazole-based dendrimers have shown similar characteristics to the polymers. However the discrete size of the molecules makes them more easily to cross-link electrochemically, and Langmuir-Blodgett films [32,33] and nanoobjects [34,35] have found some interesting applications as explosive sensors [36] and in bulk-heterojunction solar cells. [37] [a] I. Gracia, B. Herein, we describe the synthesis of a family of Janus-type liquid-crystalline codendrimers that consist of a mesogenic block based on a second-generation 2,2-bis(hydroxymethyl)propionic acid (bis-MPA) dendron functionalised with promesogenic units (M n 4, M n 3,4 and M n 3,4,5).…”

Section: Introductionmentioning

confidence: 99%

Functional Carbazole Liquid‐Crystal Block Codendrimers with Optical and Electronic Properties

Gracia

Feringán

Serrano

et al. 2014

Chemistry A European J

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The synthesis and characterisation of a family of block codendrimers consisting of highly versatile mesogenic and carbazole-containing 2,2-bis(hydroxymethyl)propionic acid (bis-MPA) dendrons are reported. The liquid-crystal behaviour was investigated by means of differential scanning calorimetry, polarised-light optical microscopy and X-ray diffraction. Depending on the chemical structure of the constituent dendrons, the codendrimers show lamellar or columnar mesophases. On the basis of the experimental results, models both at the molecular level and in the mesophase are proposed. The physical properties of the block codendrimers derived from the presence of the carbazole moiety in their structure were investigated: photoluminescence in solution and in the mesophase, electrochemical behaviour and hole transport. Electrodeposition of carbazole dendrons afforded a globular supramolecular conformation in which the mesogenic molecular side plays a key role.

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Solution processable donor–acceptor oligothiophenes for bulk-heterojunction solar cells

Cited by 48 publications

References 27 publications

D‐π‐A Conjugated Molecules for Optoelectronic Applications

D‐π‐A Conjugated Molecules for Optoelectronic Applications

π-Linkage effect of push-pull-structure organic small molecules for photovoltaic application

Functional Carbazole Liquid‐Crystal Block Codendrimers with Optical and Electronic Properties

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