Synthesis and photovoltaic properties of a star-shaped molecule with triphenylamine as core and benzo[1,2,5]thiadiazol vinylene as arms

Wu, Guisheng; Guo, Zhao; He, Chang; Zhang, Jing; He, Qingguo; Chen, Xiaomin; Li, Yongfang

doi:10.1016/j.solmat.2008.09.001

Cited by 88 publications

(57 citation statements)

References 37 publications

(77 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Besides the absorption band centered at 448 nm due to the p-p Ã transition of the polymer backbone, and the long wavelength absorption band at ca. 686 nm is probably attributed to the charge transfer band from TPA to EDOT segment [21].…”

Section: Optical Propertiesmentioning

confidence: 99%

Triphenylamine-based multielectrochromic material and its neutral green electrochromic devices

Zhao

Cui

et al. 2012

Journal of Electroanalytical Chemistry

View full text Add to dashboard Cite

Section: Optical Propertiesmentioning

confidence: 99%

Triphenylamine-based multielectrochromic material and its neutral green electrochromic devices

Zhao

Cui

et al. 2012

Journal of Electroanalytical Chemistry

View full text Add to dashboard Cite

“…The geometry and electronic properties of PHPD, TPAPD, and CZPD have been investigated by means of theoretical calculation with the Gaussian 09 program package at a hybrid density functional theory (DFT) level [43]. Becke's three-parameter gradient corrected functional (B3LYP) with a 6-31G** basis was used for full geometry optimization.…”

Section: Theoretical Calculationmentioning

confidence: 99%

An efficient photovoltaic device based on novel D–A–D solution-processable small molecules

Dong

Yao

et al. 2014

J Mater Sci

View full text Add to dashboard Cite

A series of novel small molecule PHPD, TPAPD, and CZPD were designed and synthesized for probing their potential applications in photovoltaic devices. Differential scanning calorimetry (DSC) measurement reveals that PHPD displays amorphous property, while both TPAPD and CZPD exhibit crystalline properties. Ultraviolet-Visible (UV-Vis) absorption spectra demonstrate that these small molecules possess relatively broad absorption with absorption edges of 706 nm (PHPD), 671 nm (TPAPD), and 632 nm (CZPD), respectively. Cyclic voltammetry (CV) investigation indicates that the highest occupied molecular orbital (HOMO) energy levels were well tuned (-4.97, -5.24, and -5.38 eV) with the introduction of different electron-donating moieties. The device based on CZPD without further optimization displays the highest power conversion efficiency (PCE) of 2.00 % among three small molecules (1.21 % for TPAPD and 0.28 % for PHPD), which stands out as one of the highest values for photovoltaic devices based on 3-carbazole (CZ) derivatives. This result would uncover the potential applications of 3-carbazole-based donor materials for organic solar cells.

show abstract

“…Some star-shaped D-π-A structured molecules containing TPA as the core and donor unit have been designed and synthesized for the applications as solutionprocessable organic photovoltaic donor materials. In these molecules, the peripheral units are composed of acceptor units [5] or a combination of acceptor units and π bridges [6,7] or a combination of acceptor units and donor units.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Properties of Novel Star‐Shaped π‐Conjugated Oligomers with Triphenylamine Core

Liu

Guo

et al. 2013

Chin. J. Chem.

View full text Add to dashboard Cite

Four new star-shaped π-conjugated oligomers (TPA-CZ3, TPA-TPA3, TPA-PTZ3 and TPA-BT3) with triphenylamine as a core and different electron-donating ability groups, carbazole, triphenylamine, phenothiazine and bithiophene, as peripheral units have been designed and synthesized via the Heck reaction. These oligomers show good solubility in common organic solvents. Their photophysical, electrochemical, electronic structure and charge transfer properties between these star-shaped π-conjugated oligomers and N,N'-bis(1-ethylpropyl)-3,4:9,10-perylene bis(tetracarboxyl diimide) (EP-PDI) have been investigated by UV-vis absorption spectra, photoluminescence (PL) spectra, cyclic voltammetry (CV) measurement, theoretical calculations and fluorescence quenching. The results show that the absorptions and fluorescences of TPA-CZ3, TPA-TPA3 and TPA-PTZ3 are red shifted with the electron-donating ability of the peripheral unit increasing from carbazole to triphenylamine and phenothiazine. In addition, although the bithiophene group has a weaker electron-donating ability than carbazole, triphenylamine and phenothiazine, the absorption and fluorescence of TPA-BT3 have a red shift than those of TPA-CZ3, TPA-TPA3 and TPA-PTZ3 because TPA-BT3 has a longer conjugation length than TPA-CZ3, TPA-TPA3 and TPA-PTZ3. The triphenylamine core and the peripheral units can constitute a large conjugated structure. The fluorescence quenching properties indicate that efficient charge transfer can happen between the star-shaped oligomers and EP-PDI.

show abstract

Synthesis and photovoltaic properties of a star-shaped molecule with triphenylamine as core and benzo[1,2,5]thiadiazol vinylene as arms

Cited by 88 publications

References 37 publications

Triphenylamine-based multielectrochromic material and its neutral green electrochromic devices

Triphenylamine-based multielectrochromic material and its neutral green electrochromic devices

An efficient photovoltaic device based on novel D–A–D solution-processable small molecules

Synthesis, Characterization and Properties of Novel Star‐Shaped π‐Conjugated Oligomers with Triphenylamine Core

Contact Info

Product

Resources

About