Fluorescence investigation of model compounds for light-emitting alternating copolymers in heterogeneous environments.
In this paper, the fluorescence spectra of the model compounds M(TPA-PPV) and M(TPA-PAV) of novel light-emitting alternating copolymers, were studied and the effect of KNO3 on the interaction between the model compounds and the ionic micelle-water interface was also investigated. The following is found: (i) the fluorescence changes of M(TPA-PPV) are related to the state of cetyltrimethylammonium bromide (CTAB) and sodium dodecyl sulfate (SDS) solution: (ii) an aggregated state can be formed in M(TPA-PAV) solution at low concentration of CTAB; (iii) higher concentrations of KNO3 may affect the interaction between the model compounds and the ionic micelle-water interface.
A Novel Fluorescence Sensing Mode for Ions and Neutral Molecules Based on Ionic Micelle Mediated TICT Dual Fluorescence
Abstract According to the high sensitivity of TICT (twisted intramolecular charge transfer) emission to external electric field strength, a novel fluorescence sensing mode for ions and neutral molecules in aqueous solution was proposed by using ionic micelle mediated TICT dual fluorescence was proposed. In the sensing system the ionic micelle acts as electric field mediator for the TICT fluorophore. Examples were given for sensing potassium nitrate, sodium dodecylsulfate, and β-cyclodextrin by using sodium p-diethylaminobenzoate(SDEAB)/cetyltrimethylammoinum bromide(CTAB) micelle sensing system. Linear response of dual fluorescence intensity ratio Ia/Ib to analyte concentration with correlation coefficient higher than 0.99 was observed for three analytes.
Neurorehabilitation: A Disciplined Disciplining Discipline
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