1
|
Ichino R, Momotake A, Arai T. Photochemical properties of enediyne-cored dendrimers bearing naphthalenes at the periphery. CAN J CHEM 2019. [DOI: 10.1139/cjc-2018-0128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A novel series of trans and cis enediyne-cored dendrimers bearing naphthalenes at the periphery were synthesized and their photochemical properties were examined. The trans/cis isomer ratio in the photostationary state was dependent on the excitation site in the dendrimers. When the enediyne core was selectively excited, the trans/cis isomer ratio in the photostationary state was either around 50/50 or a cis-rich mixture in all dendrimers due to the larger molar extinction coefficient of the trans-enediynes. On the other hand, when naphthalene was excited, a trans-rich mixture was unexpectedly obtained in higher generation dendrimers even though the energy transfer efficiency was almost quantitative in the trans dendrimers. These results could be explained by the energy transfer process, which was different depending on the geometric isomerism of the enediyne core.
Collapse
Affiliation(s)
- Rina Ichino
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Atsuya Momotake
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Tatsuo Arai
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| |
Collapse
|
2
|
Kobayashi T, Arai T. Photochemistry and Photophysics of Enediyne-Cored Polyphenylene Dendrimers. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2017. [DOI: 10.1246/bcsj.20170068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tetsuya Kobayashi
- Graduate School of Pure and Applied Science and Tsukuba Research Center for Interdisciplinary Materials Sciences (TIMS), University of Tsukuba, Ibaraki 305-8571
| | - Tatsuo Arai
- Graduate School of Pure and Applied Science and Tsukuba Research Center for Interdisciplinary Materials Sciences (TIMS), University of Tsukuba, Ibaraki 305-8571
| |
Collapse
|
3
|
Sugiyama Y, Shinohara Y, Momotake A, Takahashi K, Kanna Y, Nishimura Y, Arai T. Photochemistry of Linear-Shaped Phenylacetylenyl- and (Phenylacetylenyl)phenylacetylenyl-Substituted Aromatic Enediynes. J Phys Chem A 2010; 114:10929-35. [DOI: 10.1021/jp1054827] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yoko Sugiyama
- Graduate School of Pure and Applied Sciences and Research Facility Center for Science and Technology, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba City, Ibaraki 305-8565, Japan, and Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan
| | - Yoshihiro Shinohara
- Graduate School of Pure and Applied Sciences and Research Facility Center for Science and Technology, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba City, Ibaraki 305-8565, Japan, and Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan
| | - Atsuya Momotake
- Graduate School of Pure and Applied Sciences and Research Facility Center for Science and Technology, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba City, Ibaraki 305-8565, Japan, and Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan
| | - Kayori Takahashi
- Graduate School of Pure and Applied Sciences and Research Facility Center for Science and Technology, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba City, Ibaraki 305-8565, Japan, and Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan
| | - Yoko Kanna
- Graduate School of Pure and Applied Sciences and Research Facility Center for Science and Technology, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba City, Ibaraki 305-8565, Japan, and Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan
| | - Yoshinobu Nishimura
- Graduate School of Pure and Applied Sciences and Research Facility Center for Science and Technology, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba City, Ibaraki 305-8565, Japan, and Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan
| | - Tatsuo Arai
- Graduate School of Pure and Applied Sciences and Research Facility Center for Science and Technology, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba City, Ibaraki 305-8565, Japan, and Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan
| |
Collapse
|
4
|
Yoshimura N, Momotake A, Shinohara Y, Takahashi K, Nagahata R, Nishimura Y, Arai T. Synthesis and Photochemical Characteristics of Amphiphilic Enediyne Dendrimers. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2009. [DOI: 10.1246/bcsj.82.723] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
5
|
Kato K, Momotake A, Shinohara Y, Sato T, Takahashi K, Nagahata R, Nishimura Y, Arai T. Photochemical Properties of 3,3′-Disubstituted Stilbene Dendrimers. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2009. [DOI: 10.1246/bcsj.82.603] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|