π-Topology and ultrafast excited-state dynamics of remarkably photochemically stabilized pentacene derivatives with radical substituents

被引：7

作者：

Minami, Nishiki ^{[1
]}

Yoshida, Kohei ^{[1
]}

Maeguchi, Keijiro ^{[1
]}

Kato, Ken ^{[1
]}

Shimizu, Akihiro ^{[1
]}

Kashima, Genta ^{[1
]}

Fujiwara, Masazumi ^{[1
]}

Uragami, Chiasa ^{[2
]}

Hashimoto, Hideki ^{[2
]}

Teki, Yoshio ^{[1
]}

机构：

[1] Osaka City Univ, Grad Sch Sci, Div Mol Mat Sci, Dept Chem,Sumiyoshi Ku, 3-3-138 Sugimoto, Osaka 5588585, Japan

[2] Kwansei Gakuin Univ, Grad Sch Sci & Technol, Dept Appl Chem Environm, Sanda, Hyogo 6691337, Japan

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2022年 / 24卷 / 22期

基金：

日本学术振兴会;

关键词：

SPIN ALIGNMENT; ACENES; TRIPLET; SINGLET;

D O I：

10.1039/d2cp00683a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Pentacene derivatives with both pi-radical- and TIPS-substituents (1m and 1p) were synthesized and their photochemical properties and excited-state dynamics were evaluated. The pentacene-radical-linked systems 1m (1p) showed a remarkable improvement in photochemical stability, which was 187 (139) times higher than that of 6,13-bis(triisopropylsilylethynyl)pentacene. Transient absorption spectroscopy showed that this remarkable photostabilization is due to the ultrafast intersystem crossing induced by effective pi-conjugation between the radical substituent and pentacene moiety. The relationship between pi-topology and the photochemical stability is also discussed based on the excited-state dynamics.

引用

页码：13514 / 13518

页数：6

共 50 条

[1] Excited-State Dynamics of Pentacene Derivatives with Stable Radical Substituents
Ito, Akitaka
Shimizu, Akihiro
Kishida, Noriaki
Kawanaka, Yusuke
Kosumi, Daisuke
Hashimoto, Hideki
Teki, Yoshio
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2014, 53 (26) : 6715 - 6719
[2] Ultrafast excited-state dynamics of isocytosine
Szabla, Rafal
Gora, Robert W.
Sponer, Jiri
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2016, 18 (30) : 20208 - 20218
[3] Ultrafast excited-state dynamics in biological environments
Fuerstenberg, Alexandre
Vauthey, Eric
CHIMIA, 2007, 61 (10) : 617 - 620
[4] Ultrafast excited-state dynamics of thiazole orange
Zhao, Zenan
Cao, Simin
Li, Haoyang
Li, Dong
He, Yanping
Wang, Xin
Chen, Jinquan
Zhang, Sanjun
Xu, Jianhua
Knutson, Jay R.
CHEMICAL PHYSICS, 2022, 553
[5] Ultrafast excited-state dynamics in nucleic acids
Crespo-Hernández, CE
Cohen, B
Hare, PM
Kohler, B
CHEMICAL REVIEWS, 2004, 104 (04) : 1977 - 2019
[6] Ultrafast Excited-State Dynamics of Carotenoids and the Role of the SX State
Accomasso, Davide
Arslancan, Serra
Cupellini, Lorenzo
Granucci, Giovanni
Mennucci, Benedetta
JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2022, 13 (29): : 6762 - 6769
[7] Ultrafast excited-state dynamics in DNA and RNA polymers
Cohen, B
Crespo-Hernández, CE
Hare, PM
Kohler, B
FEMTOCHEMISTRY AND FEMTOBIOLOGY: ULTRAFAST EVENTS IN MOLECULAR SCIENCE, 2004, : 463 - 470
[8] Ultrafast Excited-State Dynamics of Organic Sensitizers in DSCs
Liu Zhongfan
ACTA PHYSICO-CHIMICA SINICA, 2018, 34 (04) : 337 - 338
[9] Ultrafast excited-state dynamics of the green fluroscent protein
Didier, P
Guidoni, L
Schwalbach, G
Weiss, E
Bourotte, M
Follenius-Wund, A
Pigault, C
Bigot, Y
FEMTOSECOND LASER APPLICATIONS IN BIOLOGY, 2004, 5463 : 118 - 126
[10] Subpicosecond ultrafast dynamics of excited-state flavins.
Stanley, RJ
MacFarlane, AW
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1999, 218 : U375 - U376

← 1 2 3 4 5 →