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Efficient photon upconversion at remarkably low annihilator concentrations in a liquid polymer matrix: when less is more

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@article{904272df1c0f409194a423ebfc8a49e9,
title = "Efficient photon upconversion at remarkably low annihilator concentrations in a liquid polymer matrix: when less is more",
abstract = "A green-to-blue triplet-triplet annihilation upconversion of 24.5{\%} quantum yield was achieved at a remarkably low 600 μM annihilator concentration in a viscous polymer matrix. This was made possible by utilizing a ZnTPP-based photosensitizer with exceptionally long 11 ms phosphorescence lifetime. Higher 3 mM annihilator concentration resulted in lower 24{\%} upconversion quantum yield.",
keywords = "triplet-triplet annihilation, triplet-triplet energy transfer, triplet state lifetime, upconversion, triplet fusion",
author = "Durandin, {Nikita A.} and Jussi Isokuortti and Alexander Efimov and Elina Vuorimaa-Laukkanen and Tkachenko, {Nikolai V.} and Timo Laaksonen",
year = "2018",
doi = "10.1039/c8cc07592a",
language = "English",
volume = "54",
pages = "14029--14032",
journal = "Chemical Communications",
issn = "1359-7345",
publisher = "ROYAL SOC CHEMISTRY",
number = "99",

}

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TY - JOUR

T1 - Efficient photon upconversion at remarkably low annihilator concentrations in a liquid polymer matrix: when less is more

AU - Durandin, Nikita A.

AU - Isokuortti, Jussi

AU - Efimov, Alexander

AU - Vuorimaa-Laukkanen, Elina

AU - Tkachenko, Nikolai V.

AU - Laaksonen, Timo

PY - 2018

Y1 - 2018

N2 - A green-to-blue triplet-triplet annihilation upconversion of 24.5% quantum yield was achieved at a remarkably low 600 μM annihilator concentration in a viscous polymer matrix. This was made possible by utilizing a ZnTPP-based photosensitizer with exceptionally long 11 ms phosphorescence lifetime. Higher 3 mM annihilator concentration resulted in lower 24% upconversion quantum yield.

AB - A green-to-blue triplet-triplet annihilation upconversion of 24.5% quantum yield was achieved at a remarkably low 600 μM annihilator concentration in a viscous polymer matrix. This was made possible by utilizing a ZnTPP-based photosensitizer with exceptionally long 11 ms phosphorescence lifetime. Higher 3 mM annihilator concentration resulted in lower 24% upconversion quantum yield.

KW - triplet-triplet annihilation

KW - triplet-triplet energy transfer

KW - triplet state lifetime

KW - upconversion

KW - triplet fusion

U2 - 10.1039/c8cc07592a

DO - 10.1039/c8cc07592a

M3 - Article

VL - 54

SP - 14029

EP - 14032

JO - Chemical Communications

JF - Chemical Communications

SN - 1359-7345

IS - 99

ER -