The present study reports a quantified monitoring by means of in situ resonance Raman scattering that analyzes phase-shifting characteristics of π-systems upon interacting with target analytes. A chemo- and thermochromic polydiacetylene vesicular probe is evaluated with multiple-wavelength Raman scattering modes in resonance with its phases, respectively, and thus can trace the phase-shifts. This Raman scattering-based analytical quantification is also successful in monitoring host–guest recognition events by utilizing much narrower bands, compared to those in conventional absorption or photoluminescence (PL) methods. As one of the outcomes, the monitoring analysis overcomes the limitations based on widely used colorimetric response (%CR) or PL that failed in the case of interaction with a surfactant, CTAB.
Bibliographical noteFunding Information:
C.C. and N.Y.H. contributed equally to this work. This work was supported by the National Research Foundation (Nos. MSIP 2017M3D1A1039421 and 2017R1A2B3006770), the 111 Project and the Korea University Grant.
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- conjugated polymers
- phase-shifting probes
- resonance Raman spectroscopy
ASJC Scopus subject areas
- General Chemistry
- General Materials Science