{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["2(10)"],"submitter":["Mulyadi CH"],"pubmed_abstract":["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."],"journal":["Precision chemistry"],"pagination":["539-544"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC11522992"],"repository":["biostudies-literature"],"pubmed_title":["Triplet-Triplet Annihilation-Based Photon Upconversion with a Macrocyclic Parallel Dimer."],"pmcid":["PMC11522992"],"pubmed_authors":["Yanai N","Mulyadi CH","Orihashi K","Uji M","Parmar B"],"additional_accession":[]},"is_claimable":false,"name":"Triplet-Triplet Annihilation-Based Photon Upconversion with a Macrocyclic Parallel Dimer.","description":"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.","dates":{"release":"2024-01-01T00:00:00Z","publication":"2024 Oct","modification":"2025-04-26T17:04:44.586Z","creation":"2025-04-06T15:25:19.578Z"},"accession":"S-EPMC11522992","cross_references":{"pubmed":["39483270"],"doi":["10.1021/prechem.4c00050"]}}