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. Author manuscript; available in PMC: 2017 Feb 26.
Published in final edited form as: ACS Sens. 2015 Nov 27;1(2):158–165. doi: 10.1021/acssensors.5b00065

Figure 3.

Figure 3

Comparisons of calculated HOMO and LUMO energies of fluorescent probes A, B and C, morpholine moiety (N-methylmorpholine) and protonated morpholine moiety (protonated N-methylmorpholine), as well as the electron density distributions in HOMO and LUMO of fluorescent probes A, B and C.