1
|
Li J, Shen P, Zhao Z, Tang BZ. Through-Space Conjugation: A Thriving Alternative for Optoelectronic Materials. CCS CHEMISTRY 2019. [DOI: 10.31635/ccschem.019.20180020] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Efficient electronic coupling is the key to constructing optoelectronic functional π systems. Generally, the delocalization of π electrons must comply with the framework constructed by covalent bonds (typically σ bonds), representing classic through-bond conjugation. However, through-space conjugation offers an alternative that achieves spatial electron communication with closely stacked π systems instead of covalent
bonds thus enabling multidimensional energy and charge transport. Because of the ever-accelerating advances of through-space conjugation studies, researchers are inspired greatly by the beauty of through-space conjugated systems and their potential
in high-tech applications. In this mini review, we introduce some representative and newly developed π systems having the through-space conjugation feature. In addition to discussing the profound impacts of through-space conjugation on the luminescence
properties and charge transport, we will review some impressive findings of distinctive molecules with attractive characteristics, such as aggregation-induced emission, thermally activated delayed fluorescence, bipolar charge transport, and multichannel. These achievements may bring about new breakthroughs of theory, materials, and devices in the fields of organic electronics and molecular electronics.
Collapse
|
2
|
Morisaki Y, Chujo Y. Planar Chiral [2.2]Paracyclophanes: Optical Resolution and Transformation to Optically Active π-Stacked Molecules. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20180259] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yasuhiro Morisaki
- Department of Applied Chemistry for Environment, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Yoshiki Chujo
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| |
Collapse
|
3
|
Morisaki Y, Chujo Y. Synthesis of Optically Active π-Conjugated Molecules Based on Planar Chiral [2.2]Paracyclophane. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.1055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yasuhiro Morisaki
- Department of Applied Chemistry for Environment, School of Science and Technology, Kwansei Gakuin University
| | | |
Collapse
|
4
|
Morisaki Y, Shibata S, Chujo Y. [2.2]Paracyclophane-based single molecular wire consisting of four π-electron systems. CAN J CHEM 2017. [DOI: 10.1139/cjc-2016-0526] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A [2.2]paracyclophane-based through-space–conjugated tetramer comprising four partially stacked π-electron systems was designed and synthesized, with a large overlap integral between the photoluminescence spectrum of the terminal π-electron system of the through-space–conjugated trimer and the absorption band of the fourth π-electron system. Efficient unidirectional photoexcited energy transfer in the tetramer occurred by the Förster mechanism; the energy transfer efficiency and related rate constants were found to be >0.999 and >1012 s–1, respectively, and stepwise energy transfer was found to be dominant. The [2.2]paracyclophane-based tetramer acted as a single molecular wire for efficient unidirectional photoexcited energy transfer.
Collapse
Affiliation(s)
- Yasuhiro Morisaki
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Katsura, Kyoto 615-8510, Japan
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Katsura, Kyoto 615-8510, Japan
| | - Shotaro Shibata
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Katsura, Kyoto 615-8510, Japan
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Katsura, Kyoto 615-8510, Japan
| | - Yoshiki Chujo
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Katsura, Kyoto 615-8510, Japan
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Katsura, Kyoto 615-8510, Japan
| |
Collapse
|
5
|
Tanaka M, Muraoka S, Matsui Y, Ohta E, Sakai A, Ogaki T, Yoshimoto Y, Mizuno K, Ikeda H. Remarkable Solvatofluorochromism of a [2.2]Paracyclophane-Containing Organoboron Complex: A Large Stokes Shift Promoted by Excited State Intramolecular Charge Transfer. CHEMPHOTOCHEM 2017. [DOI: 10.1002/cptc.201600028] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mirai Tanaka
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
| | - Shunsuke Muraoka
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
| | - Yasunori Matsui
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
- The Research Institute for Molecular Electronic Devices (RIMED); Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
| | - Eisuke Ohta
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
- The Research Institute for Molecular Electronic Devices (RIMED); Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
| | - Atsushi Sakai
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
| | - Takuya Ogaki
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
- The Research Institute for Molecular Electronic Devices (RIMED); Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
| | - Yuichi Yoshimoto
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
| | - Kazuhiko Mizuno
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
| | - Hiroshi Ikeda
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
- The Research Institute for Molecular Electronic Devices (RIMED); Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai, Osaka 599-8531 Japan
| |
Collapse
|
6
|
Recent advances of folded tetraphenylethene derivatives featuring through-space conjugation. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2016.06.031] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
7
|
He B, Nie H, Luo W, Hu R, Qin A, Zhao Z, Tang BZ. Synthesis, structure and optical properties of tetraphenylethene derivatives with through-space conjugation between benzene and various planar chromophores. Org Chem Front 2016. [DOI: 10.1039/c6qo00204h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of tetraphenylethene derivatives with through-space conjugation and aggregation-enhanced emission properties are synthesized and studied.
Collapse
Affiliation(s)
- Bairong He
- State Key Laboratory of Luminescent Materials and Devices
- South China University of Technology
- Guangzhou 510640
- China
| | - Han Nie
- State Key Laboratory of Luminescent Materials and Devices
- South China University of Technology
- Guangzhou 510640
- China
| | - Wenwen Luo
- State Key Laboratory of Luminescent Materials and Devices
- South China University of Technology
- Guangzhou 510640
- China
| | - Rongrong Hu
- State Key Laboratory of Luminescent Materials and Devices
- South China University of Technology
- Guangzhou 510640
- China
| | - Anjun Qin
- State Key Laboratory of Luminescent Materials and Devices
- South China University of Technology
- Guangzhou 510640
- China
| | - Zujin Zhao
- State Key Laboratory of Luminescent Materials and Devices
- South China University of Technology
- Guangzhou 510640
- China
| | - Ben Zhong Tang
- State Key Laboratory of Luminescent Materials and Devices
- South China University of Technology
- Guangzhou 510640
- China
- Department of Chemistry
| |
Collapse
|
8
|
Zhuang Z, Shen P, Ding S, Luo W, He B, Nie H, Wang B, Huang T, Hu R, Qin A, Zhao Z, Tang BZ. Synthesis, aggregation-enhanced emission, polymorphism and piezochromism of TPE-cored foldamers with through-space conjugation. Chem Commun (Camb) 2016; 52:10842-5. [DOI: 10.1039/c6cc04233c] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Alteration of intermolecular stacking geometry of a through-space conjugated foldamer gives rise to blue and cyan fluorescent crystals.
Collapse
|
9
|
He B, Nie H, Chen L, Lou X, Hu R, Qin A, Zhao Z, Tang BZ. High Fluorescence Efficiencies and Large Stokes Shifts of Folded Fluorophores Consisting of a Pair of Alkenyl-Tethered, π-Stacked Oligo-p-phenylenes. Org Lett 2015; 17:6174-7. [PMID: 26679532 DOI: 10.1021/acs.orglett.5b03152] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A series of pure hydrocarbon fluorophores containing a pair of π-stacked oligo-p-phenylenes have been synthesized and analyzed by NMR and X-ray crystallography. They show good fluorescence in solutions and enhanced fluorescence in the aggregated state. Large Stokes shifts (up to 214 nm) have been achieved in these folded fluorophores in virtue of intramolecular energy transfer, and balanced structural rigidity and flexibility. These folded fluorophores provide perfect models for understanding the energy and charge transfer process in π-stacked systems.
Collapse
Affiliation(s)
- Bairong He
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology , Guangzhou 510640, China
| | - Han Nie
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology , Guangzhou 510640, China
| | - Long Chen
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology , Guangzhou 510640, China
| | - Xiaoding Lou
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Rongrong Hu
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology , Guangzhou 510640, China
| | - Anjun Qin
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology , Guangzhou 510640, China
| | - Zujin Zhao
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology , Guangzhou 510640, China
| | - Ben Zhong Tang
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology , Guangzhou 510640, China.,Department of Chemistry, The Hong Kong University of Science & Technology , Clear Water Bay, Kowloon, Hong Kong, China.,Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Hong Kong, China
| |
Collapse
|
10
|
Yeo H, Tanaka K, Chujo Y. Synthesis of dual-emissive polymers based on ineffective energy transfer through cardo fluorene-containing conjugated polymers. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.01.056] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
11
|
Morisaki Y, Kawakami N, Shibata S, Chujo Y. Through-Space Conjugated Molecular Wire Comprising Three π-Electron Systems. Chem Asian J 2014; 9:2891-5. [DOI: 10.1002/asia.201402653] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Indexed: 11/06/2022]
|
12
|
Morisaki Y, Inoshita K, Chujo Y. Planar-Chiral Through-Space Conjugated Oligomers: Synthesis and Characterization of Chiroptical Properties. Chemistry 2014; 20:8386-90. [DOI: 10.1002/chem.201402930] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Indexed: 12/19/2022]
|