814
J Fluoresc (2021) 31:807–815
reaction and their utilization for biological imaging. Mater Sci
Eng C 92:61–68
Conclusions
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AIE luminogens as fluorescent bioprobes. TrAC Trend Anal Chem
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Aggregation-induced emission and intermolecular charge transfer
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28052–28060
9. Mathivanan M, Tharmalingam B, Lin CH, Pandiyan BV,
Thiagarajan V, Murugesapandian B (2020) ESIPT-active multi-
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salicylaldehyde-based unsymmetrical azine family. Cryst Eng
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Two triphenylamine chalcone derivatives were synthesized in
this chapter, which showed good AIE behavior in ethanol/
water mixtures, respectively. The Stokes shift of the solvent
shows a linear trend with the increase of the solvent orienta-
tion polarizability. Different pH environments will affect the
fluorescence intensity of the compound in the aggregate state.
Both the solid state fluorescence test and the generalized den-
sity function theory show that the two compounds have π-π
stacking effect in solid state, which makes the fluorescence
emission weak in solid state. Compound 1 is more prone to
oxidation than compound 2, and the thermal stability was
better than compound 2.
Supplementary Information The online version contains supplementary
10. Felouat A, Curtil M, Massue J, Ulrich G (2019) Excited-state intra-
molecular proton transfer (ESIPT) emitters based on a 2-(2′-
hydroxybenzofuranyl) benzoxazole (HBBO) scaffold
functionalised with oligo (ethylene glycol)(OEG) chains. New J
Chem 43(23):9162–9169
Author Contributions Ying-Peng Zhang, contributed to the conception of
the study;
Qi Teng, performed the experiment and wrote the manuscript;
Yun-Shang Yang, contributed significantly to analysis and manuscript
preparation;
11. Zhou J, Shi R, Liu J, Wang R, Xu Y, Qian X (2015) An ESIPT-
based fluorescent probe for sensitive detection of hydrazine in aque-
ous solution. Org Biomol Chem 13(19):5344–5348
Jing-Qi Cao, performed the data analyses;
Ji-Jun Xue, helped perform the analysis with constructive discussions.
12. Li Y, Ma Y, Yang Y, Shi W, Lan R, Guo Q (2018) Effects of
different substituents of methyl 5-R-salicylates on the excited state
intramolecular proton transfer process. Chem Chem Phys 20(6):
4208–4215
13. Zhang H, Qu Y, Gao Y, Hua J, Li J, Li B (2013) A red fluorescent
‘turn-on’chemosensor for Hg2+ based on triphenylamine–triazines
derivatives with aggregation-induced emission characteristics.
Tetrahedron Lett 54(8):909–912
14. Dumat B, Faurel-Paul E, Fornarelli P, Saettel N, Metgé G, Fiorini-
Debuisschert C, Teulade-Fichou MP (2016) Influence of the
oxazole ring connection on the fluorescence of oxazoyl-
triphenylamine biphotonic DNA probes. Org Biomol Chem
14(1):358–370
15. Li Q, Wang Z, Song W, Ma H, Dong J, Quan YY, Huang ZS
(2019) A novel D-π-A triphenylamine-based turn-on colorimetric
and ratiometric fluorescence probe for cyanide detection. Dye
Pigment 161:389–395
Data Availability The 1 H NMR, 13 C NMR HR-ESI-Ms of the 1 and 2
are detailed in the Supporting information. These materials are available
free of charge via the Internet.
Code Availability Not applicable.
Declarations
Conflict of Interest The authors declare that they have no conflict of
interest.
16. Yin J, Peng M, Ma Y, Guo R, Lin W (2018) Rational design of a
lipid-droplet-polarity based fluorescent probe for potential cancer
diagnosis. Chem Commun 54(85):12093–12096
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