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

作     者：Catherine H.Mulyadi Masanori Uji Bhavesh Parmar Kana Orihashi Nobuhiro Yanai 

作者机构：Department of Applied ChemistryGraduate School of EngineeringKyushu UniversityNishi-kuFukuoka 819-0395Japan Department of ChemistryGraduate School of ScienceThe University of TokyoBunkyo-kuTokyo 113-0033Japan CRESTJSTKawaguchiSaitama 332-0012Japan 

出 版 物：《Precision Chemistry》 (精准化学（英文）)

年 卷 期：2024年第2卷第10期

页      面：539-544页

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：supported by the JST START(JPMJSF2303) JSPS KAKENHI(JP23H00304,JP22KF0295,JP23KJ1717) Kyushu University Platform of Inter-/Transdisciplinary Energy Research(Q-PIT)through its“Module-Research Program” Kyushu University Integrated Initiative for Designing Future Society 

主　　题：photon upconversion triplet−triplet annihilation macrocyclic parallel dimer spin statistical factor anthracene 

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 *** this study,a macrocyclic parallel dimer of 9,10-diphenylanthracene(DPA)with a precisely parallel orientation,named MPD-2,is synthesized,and its TTAUC properties are ***-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 *** obtained structure−property relationship provides important information for the further improvement of TTA-UC properties.