Triplet-Triplet Annihilation-Based Photon Upconversion with a Macrocyclic Parallel Dimer

被引：4
作者：
Mulyadi, Catherine H. [1 ]
Uji, Masanori [1 ]
Parmar, Bhavesh [1 ,2 ]
Orihashi, Kana [1 ]
Yanai, Nobuhiro [1 ,2 ,3 ]
机构：
[1] Kyushu Univ, Grad Sch Engn, Dept Appl Chem, Nishi Ku, Fukuoka 8190395, Japan
[2] Univ Tokyo, Grad Sch Sci, Dept Chem, Bunkyo Ku, Tokyo 1130033, Japan
[3] JST, CREST, Kawaguchi, Saitama 3320012, Japan
来源：
PRECISION CHEMISTRY | 2024年 / 2卷 / 10期
关键词：
photon upconversion; triplet-tripletannihilation; macrocyclic parallel dimer; spin statisticalfactor; anthracene; LOW-POWER; 9,10-DIPHENYLANTHRACENE; FUSION;
D O I：
10.1021/prechem.4c00050
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The integration of multiple chromophore units into a single molecule is expected to improve the performance of photon upconversion based on triplet-triplet annihilation (TTA-UC) that can convert low energy photons to higher energy photons at low excitation intensity. In this study, a macrocyclic parallel dimer of 9,10-diphenylanthracene (DPA) with a precisely parallel orientation, named MPD-2, is synthesized, and its TTA-UC properties are investigated. MPD-2 shows a green-to-blue TTA-UC emission in the presence of a triplet sensitizer, platinum octaethylporphyrin (PtOEP). Compared to monomeric DPA, MPD-2 results in an enhancement of the spin statistical factor of TTA and a decrease in the excitation light intensity due to the intramolecular TTA process. The obtained structure-property relationship provides important information for the further improvement of TTA-UC properties.
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收藏
页码：539 / 544
页数：6
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