Jump to main content
Jump to site search

Issue 42, 2016
Previous Article Next Article

Time–oxygen & light indicating via photooxidation mediated up-conversion

Author affiliations


Photooxidation is a major threat to perishable products. Therefore, an effective monitoring system for photooxidation reactions is urgently needed due to safety concerns. Herein, a time–oxygen & light indicator (TOLI) from a non-emissive stealth upconversion system is demonstrated to address this issue. Under photooxidation stress, a nonluminous precursor 9,10-bis(diphenylphosphino)anthracene (M1) is photo-oxidized to an efficient emitter 9,10-bis(diphenylphosphoryl)anthracene (M2), and triplet–triplet annihilation (TTA)-based upconversion emission is observed. The reaction rate is easily tunable and responsive to oxygen concentration and light intensity. Over a period of time, the enhanced emission related to the degree of photooxidation is ultimately used as an indicating signal. Thus a TOLI based on the TTA-upconversion process is achieved. This work not only develops a rational approach to the visualization and monitoring of photooxidation, but also demonstrates the varied control of the TTA-upconversion process.

Graphical abstract: Time–oxygen & light indicating via photooxidation mediated up-conversion

Back to tab navigation

Supplementary files

Publication details

The article was received on 18 Sep 2016, accepted on 06 Oct 2016 and first published on 06 Oct 2016

Article type: Paper
DOI: 10.1039/C6TC04073J
Citation: J. Mater. Chem. C, 2016,4, 9986-9992
  •   Request permissions

    Time–oxygen & light indicating via photooxidation mediated up-conversion

    M. Xu, C. Han, Y. Yang, Z. Shen, W. Feng and F. Li, J. Mater. Chem. C, 2016, 4, 9986
    DOI: 10.1039/C6TC04073J

Search articles by author