Multi-luminescent switching of metal-free organic phosphors for luminometric detection of organic solvents

Chemical Science
Min Sang KwonJinsang Kim

Abstract

Metal-free organic phosphors can be an attractive smart optical sensing materials since, in such compounds, intersystem crossing (ISC) and the phosphorescence process are placed in subtle competition with fluorescence, internal conversion (IC), and non-radiative decay pathways. Here, we report a unique environment-dependent multi-luminescence switching behavior of metal-free organic phosphorescent materials. Through combined photophysical measurements and computational electronic structure analysis, we systematically investigated how physicochemical properties of organic solvents affect the photophysical pathways of the metal-free organic phosphors. By rationally adapting the finding into phosphor-doped electrospun polymer fibers, we developed a new luminometric sensory platform and achieved selective detection of eight different common organic solvents. The presented finding provides new possibilities for metal-free organic phosphors to be a novel class of smart optical sensory materials.

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Citations

Jan 4, 2017·Macromolecular Rapid Communications·Jacob H JordahlJoerg Lahann
Aug 1, 2020·Beilstein Journal of Organic Chemistry·Dominik GöbelBoris J Nachtsheim
Jun 18, 2016·Chemical Communications : Chem Comm·Ryuhei Nishiyabu, Ai Shimizu
Jun 25, 2020·Chemistry : a European Journal·Pakkirisamy ThilagarNeena K Kalluvettukuzhy
Sep 12, 2018·ACS Applied Materials & Interfaces·Qi WuWei Huang
Jun 16, 2018·The Journal of Physical Chemistry Letters·Sunandan SarkarBarry D Dunietz
Jul 15, 2016·The Journal of Physical Chemistry Letters·Huili MaZhigang Shuai
May 23, 2017·The Journal of Physical Chemistry. a·Wei SunGuoqing Zhang
Jul 9, 2020·The Journal of Physical Chemistry Letters·Long GuWei Huang
Feb 19, 2019·The Journal of Physical Chemistry Letters·Anqi LvWei Huang
Sep 22, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Bohong GaoYunlong Fu
Oct 27, 2021·Advanced Materials·Joice Jaqueline KaschukJaana Vapaavuori

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Methods Mentioned

BETA
phosphorescence

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