Triplet energy migration-based photon upconversion by amphiphilic molecular assemblies in aerated water

Chemical Science
Hironori KounoNobuo Kimizuka

Abstract

A molecular self-assembly approach is developed to resolve an outstanding issue in triplet energy migration-based photon upconversion (TEM-UC), that is, air-stable TEM-UC in water. Amphiphilic cationic acceptor (emitter) molecules self-assemble in water via hydrophobic and hydrogen bonding interactions, with which anionic donor (sensitizer) molecules are integrated through electrostatic interactions. Triplet energy is quantitatively transferred from the excited donor to the acceptor, which is followed by effective triplet energy migration among the pre-organized acceptors. It leads to TTA and concomitant UC emission in water. The dense acceptor chromophore arrays with extended hydrogen bonding networks show efficient barrier properties against molecular oxygen, as demonstrated by the stable UC emission even in air-saturated water.

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Citations

Feb 5, 2019·Chemistry : a European Journal·Hironori KounoNobuo Kimizuka
Apr 16, 2019·Chemical Communications : Chem Comm·Yang WangYong Yao
Jul 13, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Yaxiong WeiShilin Liu
Sep 24, 2019·Chemical Communications : Chem Comm·Haruki MinamiNorihisa Kobayashi
Apr 6, 2017·Chemical Communications : Chem Comm·Xin Li, Ming Lee Tang
Oct 13, 2017·Chemical Communications : Chem Comm·Karim A El Roz, Felix N Castellano
Jan 3, 2019·Chemistry, an Asian Journal·Rena HarukiNobuo Kimizuka
Mar 16, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Shogo AmemoriNobuo Kimizuka
Apr 26, 2019·Nature Communications·Lorenzo CattiMichito Yoshizawa
Sep 13, 2017·Advanced Materials·Roberto VadrucciChristoph Weder
Dec 3, 2016·Faraday Discussions·Pengfei DuanNobuo Kimizuka
Mar 6, 2021·Analytical Chemistry·Lei DingDayong Jin
Sep 2, 2016·The Journal of Physical Chemistry Letters·Yoichi KobayashiJiro Abe
Oct 21, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Nobuo KimizukaMasa-Aki Morikawa
Jul 28, 2018·Journal of the American Chemical Society·Pankaj BharmoriaNobuo Kimizuka
Aug 14, 2017·ACS Biomaterials Science & Engineering·Ayaka FukuzakiToshihiko Nagamura
Nov 12, 2020·Journal of the American Chemical Society·Kealan J FallonLuis M Campos
Dec 14, 2021·Journal of Chemical Information and Modeling·Shunsuke Yuyama, Hiromasa Kaneko

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Methods Mentioned

BETA
electron exchange
dynamic light scattering
Transmission electron microscopy
phosphorescence

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