A twisted-intramolecular-charge-transfer (TICT) based ratiometric fluorescent thermometer with a mega-Stokes shift and a positive temperature coefficient.
The fluorescence intensity of N,N-dimethyl-4-((2-methylquinolin-6-yl)ethynyl)aniline exhibits an unusual intensification with increasing temperature, by activating more vibrational bands and leading to stronger TICT emissions upon heating in dimethyl sulfoxide. Based on the different temperature dependence at various wavelengths, as shown in the TICT fluorescence spectrum, this dye can be employed to ratiometrically detect temperature.
School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China. zh19683@163.com.
Cheng
C
Cao
Xiaogang
X
Liu
Qinglong
Q
Qiao
Miao
M
Zhao
Wenting
W
Yin
Deqi
D
Mao
Hui
H
Zhang
Zhaochao
Z
Xu
D000814:Aniline Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D004121:Dimethyl Sulfoxide / Q000737:chemistry; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D011789:Quantum Theory; D011804:Quinolines / Q000737:chemistry; D013050:Spectrometry, Fluorescence; D013696:Temperature; D013821:Thermometers
D000814:Aniline Compounds; D005456:Fluorescent Dyes; D011804:Quinolines; C037219:quinoline; C023650:aniline; D004121:Dimethyl Sulfoxide