A bis-cyclometalated iridium complex as a benchmark sensitizer for efficient visible-to-UV photon upconversion

Pengfei Duan; Nobuhiro Yanai; Nobuo Kimizuka

doi:10.1039/c4cc05718j

A bis-cyclometalated iridium complex as a benchmark sensitizer for efficient visible-to-UV photon upconversion

Chem Commun (Camb). 2014 Nov 7;50(86):13111-3. doi: 10.1039/c4cc05718j.

Authors

Pengfei Duan¹, Nobuhiro Yanai, Nobuo Kimizuka

Affiliation

¹ Department of Chemistry and Biochemistry, Graduate School of Engineering, Center for Molecular Systems (CMS), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan. yanai@mail.cstm.kyushu-u.ac.jp n-kimi@mail.cstm.kyushu-u.ac.jp.

PMID: 25223560
DOI: 10.1039/c4cc05718j

Abstract

To resolve the biggest problem in visible-to-UV photon upconversion based on sensitized triplet-triplet annihilation-the quenching of upconverted fluorescence by sensitizers-we discovered a superior sensitizer with less UV absorption intensity that enables highly efficient, low-power (0.78 mW cm(-2)) visible-to-UV upconversion.