Abstract
A series of poly(thioether)s containing silicon atom with unconventional fluorescence were synthesized via successive thiol click reaction at room temperature. Although rigid π-conjugated structure did not exist in the polymer chain, the poly(thioether)s exhibited excellent fluorescent properties in solutions and showed visible blue fluorescence in living cells. The strong blue fluorescence can be attributed to the aggregation of lone pair electron of heteroatom and coordination between heteroatom and Si atom. In addition, the responsiveness of poly(thioether) to metal ions suggested that the selectivity of poly(thioether) to Fe3+ ion could be enhanced by end-modifying with different sulfhydryl compounds. This study further explored their application in cell imaging and studied their responsiveness to Fe3+ in living cells. It is expected that the described synthetic route could be extended to synthesize novel poly(thioether)s with superior optical properties. Their application in cell imaging and ion detection will broaden the range of application of poly(thioether)s.
Highlights
Poly(thioether) are important base polymers that exhibit excellent physical and chemical properties, such as good chemical and weather resistance, high impermeability, and high heat insulation properties [1]
Many methods have been developed for the ion detection, including microelectrode, absorption spectroscopy [5]
The results suggest that poly(thioether)s could enter living cells and could be absorbed on the surface of the cells
Summary
Poly(thioether) are important base polymers that exhibit excellent physical and chemical properties, such as good chemical and weather resistance, high impermeability, and high heat insulation properties [1]. A through a double catalytic A3-coupling of primary amine, formaldehyde and TMSA, and subsequent of two terminal groups endow them with high them valueswith of post-modification [20]. The obtained poly(thioether)s and post-functionalized products provided a simple route to. The obtained poly(thioether)s and post-functionalized products provided a simple route to synthesize sulfur-containing sulfur-containing organosilicone organosilicone polymer polymer with with superior superior optical optical properties properties and synthesize and extended extended their application in the field of cell imaging and ion detection. Their application in the field of cell imaging and ion detection.
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