A fluorescence-enhanced probe PY, which is based on integration of pyrene moiety and amino acid group,was developed for the orthogonal recognition of In3＋ and Al3＋ by the quick formation of 1：1 complex. PY shows hi...A fluorescence-enhanced probe PY, which is based on integration of pyrene moiety and amino acid group,was developed for the orthogonal recognition of In3＋ and Al3＋ by the quick formation of 1：1 complex. PY shows high selectivity and sensitivity for In3＋ in NaOAc/HOAc（pH 4.8） buffer solution but rather for Al3＋ in methanol. Moreover, this probe shows good cell permeability, and the recognition of In3＋ by PY was successfully applied in bioimaging, which was the first example for detection of this metal ion in living cells.展开更多
In the present paper, a polymer inclusion membrane （PIM） containing polyvinyl chloride （PVC）, and bis-（2-ethylhexyl） phosphate （D2EHPA） which was used as extracting agent was used for the recovery of In（Ⅲ） ...In the present paper, a polymer inclusion membrane （PIM） containing polyvinyl chloride （PVC）, and bis-（2-ethylhexyl） phosphate （D2EHPA） which was used as extracting agent was used for the recovery of In（Ⅲ） ions in hydrochloric acid medium. The effects of carrier concentration, feed phase pH, strip phase HCI concentration, temperature on the transport, and the membrane＇s stability and thickness were examined. And the conditions for the selective separation of In（Ⅲ） and CU（Ⅱ） were optimized. The results showed that the transport of In（Ⅲ） across PIM was consistent with the first order kinetics equation, and also it was controlled by both the diffusion of the metal complex in the membrane and the chemical reaction at the interface of the boundary layers. The transport flux （J0） was inversely proportional to the membrane thickness, however, the transport stability improved as the membrane thickness increased. The transport flux of In（Ⅲ） and CU（Ⅱ） was decreased by excessive acidity of feed phase and high concentration of Cl^- . The selectivity separation coefficient of In（Ⅲ）/Cu（Ⅱ） was up to 34.33 when the original concentration of both In（Ⅲ） and Cu（Ⅱ） was 80 mg· L^ -1 as well as the pH of the feed phase and the concentration of Cl^- in the adjusting context were 0.6 and 0.5 mol· L^-1, respectively. Within the range of pH = 1-3, the separation selectivity of In（Ⅲ）/Cu（Ⅱ） reached the peak in the case when the Cl^- concentration was 0.7 mol·L^ -1.展开更多
基金supported by the National Natural Science Foundation of China (Nos. 21572091 and 21472075)the Fundamental Research Funds for the Central Universities (No. lzujbky-2016-51) by MoE of China
文摘A fluorescence-enhanced probe PY, which is based on integration of pyrene moiety and amino acid group,was developed for the orthogonal recognition of In3＋ and Al3＋ by the quick formation of 1：1 complex. PY shows high selectivity and sensitivity for In3＋ in NaOAc/HOAc（pH 4.8） buffer solution but rather for Al3＋ in methanol. Moreover, this probe shows good cell permeability, and the recognition of In3＋ by PY was successfully applied in bioimaging, which was the first example for detection of this metal ion in living cells.
基金Acknowledgements This research is supported by Innovative Research Team of Xi＇an University of Architecture and Technology the National Natural Science Foundation of China （Grant Nos. 51178378 and 51278408） and the Youth Science Foundation Project （No. 21607118）.
文摘In the present paper, a polymer inclusion membrane （PIM） containing polyvinyl chloride （PVC）, and bis-（2-ethylhexyl） phosphate （D2EHPA） which was used as extracting agent was used for the recovery of In（Ⅲ） ions in hydrochloric acid medium. The effects of carrier concentration, feed phase pH, strip phase HCI concentration, temperature on the transport, and the membrane＇s stability and thickness were examined. And the conditions for the selective separation of In（Ⅲ） and CU（Ⅱ） were optimized. The results showed that the transport of In（Ⅲ） across PIM was consistent with the first order kinetics equation, and also it was controlled by both the diffusion of the metal complex in the membrane and the chemical reaction at the interface of the boundary layers. The transport flux （J0） was inversely proportional to the membrane thickness, however, the transport stability improved as the membrane thickness increased. The transport flux of In（Ⅲ） and CU（Ⅱ） was decreased by excessive acidity of feed phase and high concentration of Cl^- . The selectivity separation coefficient of In（Ⅲ）/Cu（Ⅱ） was up to 34.33 when the original concentration of both In（Ⅲ） and Cu（Ⅱ） was 80 mg· L^ -1 as well as the pH of the feed phase and the concentration of Cl^- in the adjusting context were 0.6 and 0.5 mol· L^-1, respectively. Within the range of pH = 1-3, the separation selectivity of In（Ⅲ）/Cu（Ⅱ） reached the peak in the case when the Cl^- concentration was 0.7 mol·L^ -1.
