Solid-State, Near-Infrared to Visible Photon Upconversion via Triplet–Triplet Annihilation of a Binary System Fabricated by Solution Casting

• Published in: ACS applied materials & interfaces Vol. 11; no. 23; pp. 20812 - 20819
• Main Authors: Abulikemu, Aizitiaili, Sakagami, Yusuke, Heck, Claire, Kamada, Kenji, Sotome, Hikaru, Miyasaka, Hiroshi, Kuzuhara, Daiki, Yamada, Hiroko
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 12.06.2019
• Subjects: intersystem crossing; photon upconversion; solution casting; triplet−triplet annihilation; triplet energy transfer; binary solid; near-infrared to visible

Herein, triplet–triplet annihilation upconversion (TTA-UC) from near-infrared (NIR, 785 nm) to visible (yellow, centered at 570 nm) regions has been demonstrated in the binary solid of condensed chromophores. Microparticles of the binary solid comprising rubrene as a matrix (emitter) and π-extended...