Synthesis and characterization of cross-shaped p-n diblock oligomers

Hong Yu Wang; Jun Hua Wan; Hong Ji Jiang; Gui An Wen; Jia Chun Feng; Zhi Jian Zhang; Bo Peng; Wei Huang; Wei Wei

doi:10.1002/pola.21864

Synthesis and characterization of cross-shaped p-n diblock oligomers

Hong Yu Wang, Jun Hua Wan, Hong Ji Jiang, Gui An Wen, Jia Chun Feng, Zhi Jian Zhang, Bo Peng, Wei Huang, Wei Wei

Fudan University

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

The cross-shaped p-n diblock oligomers based on oligothiophenes (OTs) and 1,3,4-oxadiazole (OXD) were synthesized and investigated regarding optical properties, electrochemistry, quantum chemical calculations, and intramolecular energy transfer. Since only one emission peak is observed in PL spectra of the oligomers, it is evidenced that effective energy transfer from the OXD to OTs branch. The electrochemical experiments show that almost complete spatial separation of HOMO and LUMO with the thiophene number increasing. The theoretical calculations were carried out regarding which conformer is the lowest in energy, the torsion angle between thiophene/oxadiazole and the central benzene ring, and electron densities distributions of the oligomers. Based on all data, a model for intramolecular energy-transfer process has been put forward to explain the optical properties.

Original language	English
Pages (from-to)	1066-1073
Number of pages	8
Journal	Journal of Polymer Science, Part A: Polymer Chemistry
Volume	45
Issue number	6
DOIs	https://doi.org/10.1002/pola.21864
State	Published - 15 Mar 2007
Externally published	Yes

Keywords

Cross-shaped oligomers
Energy transfer
Oligothiophenes
p-n diblock oligomers

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10.1002/pola.21864

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title = "Synthesis and characterization of cross-shaped p-n diblock oligomers",

abstract = "The cross-shaped p-n diblock oligomers based on oligothiophenes (OTs) and 1,3,4-oxadiazole (OXD) were synthesized and investigated regarding optical properties, electrochemistry, quantum chemical calculations, and intramolecular energy transfer. Since only one emission peak is observed in PL spectra of the oligomers, it is evidenced that effective energy transfer from the OXD to OTs branch. The electrochemical experiments show that almost complete spatial separation of HOMO and LUMO with the thiophene number increasing. The theoretical calculations were carried out regarding which conformer is the lowest in energy, the torsion angle between thiophene/oxadiazole and the central benzene ring, and electron densities distributions of the oligomers. Based on all data, a model for intramolecular energy-transfer process has been put forward to explain the optical properties.",

keywords = "Cross-shaped oligomers, Energy transfer, Oligothiophenes, p-n diblock oligomers",

author = "Wang, {Hong Yu} and Wan, {Jun Hua} and Jiang, {Hong Ji} and Wen, {Gui An} and Feng, {Jia Chun} and Zhang, {Zhi Jian} and Bo Peng and Wei Huang and Wei Wei",

year = "2007",

month = mar,

day = "15",

doi = "10.1002/pola.21864",

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volume = "45",

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journal = "Journal of Polymer Science, Part A: Polymer Chemistry",

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T1 - Synthesis and characterization of cross-shaped p-n diblock oligomers

AU - Wang, Hong Yu

AU - Wan, Jun Hua

AU - Jiang, Hong Ji

AU - Wen, Gui An

AU - Feng, Jia Chun

AU - Zhang, Zhi Jian

AU - Peng, Bo

AU - Huang, Wei

AU - Wei, Wei

PY - 2007/3/15

Y1 - 2007/3/15

N2 - The cross-shaped p-n diblock oligomers based on oligothiophenes (OTs) and 1,3,4-oxadiazole (OXD) were synthesized and investigated regarding optical properties, electrochemistry, quantum chemical calculations, and intramolecular energy transfer. Since only one emission peak is observed in PL spectra of the oligomers, it is evidenced that effective energy transfer from the OXD to OTs branch. The electrochemical experiments show that almost complete spatial separation of HOMO and LUMO with the thiophene number increasing. The theoretical calculations were carried out regarding which conformer is the lowest in energy, the torsion angle between thiophene/oxadiazole and the central benzene ring, and electron densities distributions of the oligomers. Based on all data, a model for intramolecular energy-transfer process has been put forward to explain the optical properties.

AB - The cross-shaped p-n diblock oligomers based on oligothiophenes (OTs) and 1,3,4-oxadiazole (OXD) were synthesized and investigated regarding optical properties, electrochemistry, quantum chemical calculations, and intramolecular energy transfer. Since only one emission peak is observed in PL spectra of the oligomers, it is evidenced that effective energy transfer from the OXD to OTs branch. The electrochemical experiments show that almost complete spatial separation of HOMO and LUMO with the thiophene number increasing. The theoretical calculations were carried out regarding which conformer is the lowest in energy, the torsion angle between thiophene/oxadiazole and the central benzene ring, and electron densities distributions of the oligomers. Based on all data, a model for intramolecular energy-transfer process has been put forward to explain the optical properties.

KW - Cross-shaped oligomers

KW - Energy transfer

KW - Oligothiophenes

KW - p-n diblock oligomers

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DO - 10.1002/pola.21864

M3 - 文章

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SN - 0887-624X

VL - 45

SP - 1066

EP - 1073

JO - Journal of Polymer Science, Part A: Polymer Chemistry

JF - Journal of Polymer Science, Part A: Polymer Chemistry

IS - 6

ER -

Synthesis and characterization of cross-shaped p-n diblock oligomers

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Keywords

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