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- W4200149456 endingPage "1600" @default.
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- W4200149456 abstract "We report intense dopant-matrix afterglow systems with an afterglow efficiency (ΦAG) of 47% and an afterglow lifetime (τAG) of 1.3 s. Luminescent difluoroboron β-diketonate (BF2bdk) dopants and their deuterated counterparts are designed with naphthalene and carboxylic acid groups. After doping into benzoic acid (BA) matrices, room-temperature afterglow brightness and afterglow duration of the BF2bdk-BA materials have unexpectedly been found to reach the levels of those at 77 K, which indicates that hydrogen bonding between BF2bdk and BA, as well as the deuteration technique, can reduce knr + kq of BF2bdk triplets to very small values even at room temperature. Detailed studies reveal that the BF2bdk possesses typical 1ICT characters in the S1 state and distinct 3LE composition in the T1 state, and thus shows a high ΦISC and a small kP to obtain a high ΦAG and a long τAG. Besides, triplet-triplet annihilation has been found in the dopant-matrix system at high doping concentrations to further increase ΦAG." @default.
- W4200149456 created "2021-12-31" @default.
- W4200149456 creator A5012250274 @default.
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- W4200149456 creator A5089521834 @default.
- W4200149456 date "2021-12-29" @default.
- W4200149456 modified "2023-10-07" @default.
- W4200149456 title "Intense Organic Afterglow Enabled by Molecular Engineering in Dopant-Matrix Systems" @default.
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- W4200149456 doi "https://doi.org/10.1021/acsami.1c20331" @default.
- W4200149456 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34963292" @default.
- W4200149456 hasPublicationYear "2021" @default.
- W4200149456 type Work @default.