Fluorescent hydrogels with fast and reversible responses have attracted extensive attention, and it remains a challenge to designmultistimuli-responsive fluorescent hydrogel through a facile and versatile method. Mean...Fluorescent hydrogels with fast and reversible responses have attracted extensive attention, and it remains a challenge to designmultistimuli-responsive fluorescent hydrogel through a facile and versatile method. Meanwhile, the segmental motion inhydrogels is of significance for the various functions of hydrogels such as chemical reactivity, self-healing, and mechanicalstrength, etc., however, it is difficult and complicated to in situ investigate the segmental motion under different conditions. In thiswork, a multistimuli-responsive fluorescent hydrogel was designed and fabricated by introducing a tetraphenylethylene (TPE)derivative as a nonaggregated crosslinker in the gel network. Since the intermolecular rotation of TPE at the crosslinking pointwas directly integrated with the dynamic conformational transition of the macromolecular network, the mobility of macromolecularsegments can be monitored by the fluorescence intensity of the hydrogel. The prepared hydrogel has promising fluorescenceresponses to temperature, pH, metal ions, and hydrogen bonding agents, and characterization of the fluorescence and the chainsegmental motion showed that the weaker the mobility of the network macromolecular chain is, the stronger the fluorescenceintensity is. Furthermore, due to the multistimuli-responsive fluorescence of the hydrogel, such fluorescent hydrogels can bedesigned as reversible patterning displays and biomimetic color/shape adjustable actuators, with various potential applications.展开更多
Multistimuli-responsive luminescent materials,showing obvious alteration of emission colours or intensity toward multiple external stimuli,have attracted extensive interest from researchers for decades,but the tailore...Multistimuli-responsive luminescent materials,showing obvious alteration of emission colours or intensity toward multiple external stimuli,have attracted extensive interest from researchers for decades,but the tailored synthesis of such materials with a single phase remains a tough challenge.Herein,we investigate a Cu(I)cyclic trinuclear complex with the pyridyl-substituted pyrazolate ligand(denoted as complex 1).展开更多
基金the National Natural Science Foundation of China(No.51903250).
文摘Fluorescent hydrogels with fast and reversible responses have attracted extensive attention, and it remains a challenge to designmultistimuli-responsive fluorescent hydrogel through a facile and versatile method. Meanwhile, the segmental motion inhydrogels is of significance for the various functions of hydrogels such as chemical reactivity, self-healing, and mechanicalstrength, etc., however, it is difficult and complicated to in situ investigate the segmental motion under different conditions. In thiswork, a multistimuli-responsive fluorescent hydrogel was designed and fabricated by introducing a tetraphenylethylene (TPE)derivative as a nonaggregated crosslinker in the gel network. Since the intermolecular rotation of TPE at the crosslinking pointwas directly integrated with the dynamic conformational transition of the macromolecular network, the mobility of macromolecularsegments can be monitored by the fluorescence intensity of the hydrogel. The prepared hydrogel has promising fluorescenceresponses to temperature, pH, metal ions, and hydrogen bonding agents, and characterization of the fluorescence and the chainsegmental motion showed that the weaker the mobility of the network macromolecular chain is, the stronger the fluorescenceintensity is. Furthermore, due to the multistimuli-responsive fluorescence of the hydrogel, such fluorescent hydrogels can bedesigned as reversible patterning displays and biomimetic color/shape adjustable actuators, with various potential applications.
基金supported by the National Natural Science Foundation of China(21731002,21975104,and 22150004)the Guangdong Major Project of Basic and Applied Research(No.2019B030302009)+1 种基金the Fundamental Research Funds for the Central Universities(11621035)Jinan University.
文摘Multistimuli-responsive luminescent materials,showing obvious alteration of emission colours or intensity toward multiple external stimuli,have attracted extensive interest from researchers for decades,but the tailored synthesis of such materials with a single phase remains a tough challenge.Herein,we investigate a Cu(I)cyclic trinuclear complex with the pyridyl-substituted pyrazolate ligand(denoted as complex 1).
