Volume 132, Issue 37 pp. 16295-16300
Forschungsartikel

Near-Infrared-III-Absorbing and -Emitting Dyes: Energy-Gap Engineering of Expanded Porphyrinoids via Metallation

Yue Wang

Yue Wang

Department of Chemistry and Biochemistry, Graduate School of Engineering, the Center for Molecular Systems, Kyushu University, Fukuoka, 819-0395 Japan

These authors contributed equally to this work.

Search for more papers by this author
Koki Ogasahara

Koki Ogasahara

Department of Chemistry and Biochemistry, Graduate School of Engineering, the Center for Molecular Systems, Kyushu University, Fukuoka, 819-0395 Japan

These authors contributed equally to this work.

Search for more papers by this author
Daisuke Tomihama

Daisuke Tomihama

Department of Chemistry and Biochemistry, Graduate School of Engineering, the Center for Molecular Systems, Kyushu University, Fukuoka, 819-0395 Japan

Search for more papers by this author
Dr. Radomir Mysliborski

Dr. Radomir Mysliborski

Department of Chemistry and Biochemistry, Graduate School of Engineering, the Center for Molecular Systems, Kyushu University, Fukuoka, 819-0395 Japan

Search for more papers by this author
Dr. Masatoshi Ishida

Corresponding Author

Dr. Masatoshi Ishida

Department of Chemistry and Biochemistry, Graduate School of Engineering, the Center for Molecular Systems, Kyushu University, Fukuoka, 819-0395 Japan

Search for more papers by this author
Yongseok Hong

Yongseok Hong

Department of Chemistry and Spectroscopy for Functional π-Electronic Systems, Yonsei University, Seoul, 03722 Korea

Search for more papers by this author
Yusuke Notsuka

Yusuke Notsuka

Graduate School of Advanced Health Sciences, Saga University, Saga, 840-8502 Japan

Search for more papers by this author
Prof. Dr. Yoshihisa Yamaoka

Prof. Dr. Yoshihisa Yamaoka

Graduate School of Advanced Health Sciences, Saga University, Saga, 840-8502 Japan

Search for more papers by this author
Tomotaka Murayama

Tomotaka Murayama

Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, 113-0033 Japan

Search for more papers by this author
Dr. Atsuya Muranaka

Dr. Atsuya Muranaka

Cluster for Pioneering Research (CPR), Advanced Elements Chemistry Laboratory, RIKEN, Saitama, 351-0198 Japan

Search for more papers by this author
Prof. Dr. Masanobu Uchiyama

Prof. Dr. Masanobu Uchiyama

Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, 113-0033 Japan

Cluster for Pioneering Research (CPR), Advanced Elements Chemistry Laboratory, RIKEN, Saitama, 351-0198 Japan

Search for more papers by this author
Dr. Shigeki Mori

Dr. Shigeki Mori

Advanced Research Support Center, Ehime University, Matsuyama, 790-8577 Japan

Search for more papers by this author
Dr. Yuhsuke Yasutake

Dr. Yuhsuke Yasutake

Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, 153-8902 Japan

Search for more papers by this author
Prof. Dr. Susumu Fukatsu

Prof. Dr. Susumu Fukatsu

Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, 153-8902 Japan

Search for more papers by this author
Prof. Dr. Dongho Kim

Corresponding Author

Prof. Dr. Dongho Kim

Department of Chemistry and Spectroscopy for Functional π-Electronic Systems, Yonsei University, Seoul, 03722 Korea

Search for more papers by this author
Prof. Dr. Hiroyuki Furuta

Corresponding Author

Prof. Dr. Hiroyuki Furuta

Department of Chemistry and Biochemistry, Graduate School of Engineering, the Center for Molecular Systems, Kyushu University, Fukuoka, 819-0395 Japan

Search for more papers by this author
First published: 02 June 2020
Citations: 8

Abstract

The synthesis of organometallic complexes of modified 26π-conjugated hexaphyrins with absorption and emission capabilities in the third near-infrared region (NIR-III) is described. Symmetry alteration of the frontier molecular orbitals (MOs) of bis-PdII and bis-PtII complexes of hexaphyrin via N-confusion modification led to substantial metal dπ–pπ interactions. This MO mixing, in turn, resulted in a significantly narrower HOMO–LUMO energy gap. A remarkable long-wavelength shift of the lowest S0→S1 absorption beyond 1700 nm was achieved with the bis-PtII complex, t-Pt2-3. The emergence of photoacoustic (PA) signals maximized at 1700 nm makes t-Pt2-3 potentially useful as a NIR-III PA contrast agent. The rigid bis-PdII complexes, t-Pd2-3 and c-Pd2-3, are rare examples of NIR emitters beyond 1500 nm. The current study provides new insight into the design of stable, expanded porphyrinic dyes possessing NIR-III-emissive and photoacoustic-response capabilities.

Conflict of interest

The authors declare no conflict of interest.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.