The great achievements of click chemistry have encouraged polymer scientists to use this reaction in their field. This review assembles an update of the advances of using azide-alkyne click polymerization to prepare f...The great achievements of click chemistry have encouraged polymer scientists to use this reaction in their field. This review assembles an update of the advances of using azide-alkyne click polymerization to prepare functional polytriazoles（PTAs） with linear and hyperbranched structures.The Cu（I）-mediated click polymerization furnishes 1,4-regioregular PTAs,whereas,the metal-free click polymerization of propiolates and azides produces PTAs with 1,4-regioisomer contents up to 90%.The PTAs display advanced functions,such as aggregation-induced emission,thermal stability,biocompatibility and optical nonlinearity.展开更多
Cu（Ⅱ） detection is important because it plays crucial role in several biological processes and ecological systems.Fluorescent techniques have attracted more and more attention in Cu（Ⅱ） detection.In this report,w...Cu（Ⅱ） detection is important because it plays crucial role in several biological processes and ecological systems.Fluorescent techniques have attracted more and more attention in Cu（Ⅱ） detection.In this report,we contribute a novel strategy to use fluorescence spectroscopy for Cu（Ⅱ） specific detection.The specificity relies on the fact that,of the many metal cations,only Cu（Ⅱ） can catalyze the hydrolyzation of a-amino acid ester.The novelty originates from the unique aggregation-induced emission（AIE） property of the fluorescent label.We designed a model a-amino acid ester（TPE-Ala） constructed with alanine and tetraphenylethene-functionalized methanol（TPE-methanol）.In comparison with the precursor TPE-Ala, TPE-methanol has lower solubility and is easy to form aggregates in water,thereby displaying a higher fluorescent response.Thus,the Cu（Ⅱ） catalyzed hydrolyzation can be monitored by recording the fluorescence enhancement and fluorescent detection Cu（Ⅱ） is rationally achieved.展开更多
基金partially supported by the National Natural Science Foundation of China(Nos.50703033,20974098 and 20974028)the Ministry of Science and Technology of China(2009CB623605)+1 种基金the Research Grants Council of Hong Kong (603509,HKUST2/CRF/10)the University Grants Committee of Hong Kong(AoE/P-03/08)
文摘The great achievements of click chemistry have encouraged polymer scientists to use this reaction in their field. This review assembles an update of the advances of using azide-alkyne click polymerization to prepare functional polytriazoles（PTAs） with linear and hyperbranched structures.The Cu（I）-mediated click polymerization furnishes 1,4-regioregular PTAs,whereas,the metal-free click polymerization of propiolates and azides produces PTAs with 1,4-regioisomer contents up to 90%.The PTAs display advanced functions,such as aggregation-induced emission,thermal stability,biocompatibility and optical nonlinearity.
基金supported by the key project of the Ministry of Science and Technology of China(No.2013CB834704)the National Natural Science Foundation of China(No.51273175)+1 种基金the Research Grants Council of Hong Kong(No.603509, HKUST2/CRF/10,and 604711)the University Grants Committee of Hong Kong(No.AoE/P-03/08)
文摘Cu（Ⅱ） detection is important because it plays crucial role in several biological processes and ecological systems.Fluorescent techniques have attracted more and more attention in Cu（Ⅱ） detection.In this report,we contribute a novel strategy to use fluorescence spectroscopy for Cu（Ⅱ） specific detection.The specificity relies on the fact that,of the many metal cations,only Cu（Ⅱ） can catalyze the hydrolyzation of a-amino acid ester.The novelty originates from the unique aggregation-induced emission（AIE） property of the fluorescent label.We designed a model a-amino acid ester（TPE-Ala） constructed with alanine and tetraphenylethene-functionalized methanol（TPE-methanol）.In comparison with the precursor TPE-Ala, TPE-methanol has lower solubility and is easy to form aggregates in water,thereby displaying a higher fluorescent response.Thus,the Cu（Ⅱ） catalyzed hydrolyzation can be monitored by recording the fluorescence enhancement and fluorescent detection Cu（Ⅱ） is rationally achieved.
