A Novel Ratiometric Oxygen Sensor Based On a Sextuple Hydrogen-Bonding Self-Assembly Molecular Heterodimer  

作　　者：Hui Zeng Cheng Zhang Yan Huang Zhiyun Lu 

机构地区：[1]Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China

出　　处：《Chinese Journal of Chemistry》2016年第9期873-877,共5页中国化学（英文版）

基　　金：We acknowledge the financial support for this work by the National Natural Science Foundation of China （No. 21372168）.

摘　　要：A novel sextuple hydrogen-bonding （HB） self-assembly molecular heterodimer bearing an iridium complex as the indicator dye and two carbazoles as the reference dye, namely 6HB-Irbt-Cz, was synthesized, and its molecular structure was confirmed by ^1H NMR, ^13CNMR, TOF-MS and 2D NMR. Because of the inefficient energy transfer process between the carbazole and iridium complex units, 6HB-Irbt-Cz exhibits distinct fluorescence/ phosphorescence dual emission in neat film state. More importantly, the neat film sample of 6HB-Irbt-Cz could display linear ratiometric optical response toward oxygen in the full oxygen concentration range from 0 to 100 vol%, together with good stability, reversibility and rapid response-recovery times. Note that this represents the first discovery of neat-film-based oxygen sensor capable of showing strictly linear ratiometric Stem-Volmer behavior in the oxygen concentration of 0- 100 vol%.A novel sextuple hydrogen-bonding （HB） self-assembly molecular heterodimer bearing an iridium complex as the indicator dye and two carbazoles as the reference dye, namely 6HB-Irbt-Cz, was synthesized, and its molecular structure was confirmed by ^1H NMR, ^13CNMR, TOF-MS and 2D NMR. Because of the inefficient energy transfer process between the carbazole and iridium complex units, 6HB-Irbt-Cz exhibits distinct fluorescence/ phosphorescence dual emission in neat film state. More importantly, the neat film sample of 6HB-Irbt-Cz could display linear ratiometric optical response toward oxygen in the full oxygen concentration range from 0 to 100 vol%, together with good stability, reversibility and rapid response-recovery times. Note that this represents the first discovery of neat-film-based oxygen sensor capable of showing strictly linear ratiometric Stem-Volmer behavior in the oxygen concentration of 0- 100 vol%.

关 键 词：hydrogen-bonding self-assembly molecular heterodimer oxygen sensor ratiometric response 0- 100 vol% oxygen concentration range linear Stern-Volmer behavior 

分 类 号：O[理学]