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. Author manuscript; available in PMC: 2021 Oct 14.
Published in final edited form as: J Am Chem Soc. 2020 Oct 5;142(41):17515–17523. doi: 10.1021/jacs.0c07245

Figure 3: Rational design of AggFluor probes with desired viscosity sensitivities.

Figure 3:

a) LUMO orbitals of P1 at excited state clearly show conjugation from the diarylethene moiety. b) Conjugation between the acceptor and EDR is proposed to control excited rotational barriers. c) Structure of P2–P7. d–e) P2–P7: the x values and fluorescence intensity increase in viscosities 3•1011 cp versus 927 cp. f) Structure of P8-P12. g–h) P8–P12: the x values and fluorescence intensity increase in viscosities 3•1011 cp versus 927 cp. i) Structure of P13-P17. j-k) P13–P17: the x values and fluorescence intensity increase in viscosities 3•1011 cp versus 927 cp.