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Protein-assisted conjugated polymer microarray: Fabrication and sensing applications
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作者 Lü FengTing FENG XuLi +1 位作者 LIU LiBing WANG Shu 《Chinese Science Bulletin》 SCIE EI CAS 2013年第33期4039-4044,共6页
A new strategy is performed to fabricate conjugated polymer microarray with the assistance of protein in this work.The water-soluble cationic conjugated polymer employed in the present work is capable of absorbing lig... A new strategy is performed to fabricate conjugated polymer microarray with the assistance of protein in this work.The water-soluble cationic conjugated polymer employed in the present work is capable of absorbing light at 510 nm,which makes it compatible with a variety of commercial microarray scanners.It is demonstrated that the protein-assisted conjugated polymer microarray exhibits higher fluorescence signal and better stability in comparison with the case without protein.The conjugated polymer microarray can be used for sensitive detection of picric acid(PA).A major advantage of our approach is its simplicity and chemical linking is not required between the conjugated polymer and microarray substrate.Considering the simplicity of the preparation of the conjugated polymer microarray,it is anticipated that novel sensing platforms will be constructed by employing this versatile method. 展开更多
关键词 共轭聚合物 微阵列 蛋白质 传感 制备 应用 聚合物芯片 荧光信号
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A Novel Thin Film Resistive Humidity Sensor Based on SolubleConjugated Polymer:(propionic acid)-co-(propargyl alcohol)
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作者 Yang LI Mu Jie YANG 《Chinese Chemical Letters》 SCIE CAS CSCD 2001年第8期701-702,共2页
A novel soluble conjugated copolymer (propionic acid)-co-(propargyl alcohol) (PA-co-OHP) has been synthesized for the first time using a new palladium acetylide catalyst Pd(PPh3)(2)(C=CC(CH3)(2)OH)(2)(PPB). Thin film ... A novel soluble conjugated copolymer (propionic acid)-co-(propargyl alcohol) (PA-co-OHP) has been synthesized for the first time using a new palladium acetylide catalyst Pd(PPh3)(2)(C=CC(CH3)(2)OH)(2)(PPB). Thin film resistive humidity sensor based oil the copolymer doped with HClO4 was prepared. The impedance of the sensor changed from 10(3)similar to 10(7) Omega in 95%similar to 30%RH, and the response of that is very quick (<6 sec.). Preliminary results show the copolymer is a promising humidity sensitive material. 展开更多
关键词 Humidity sensor conjugated polymer propiolinc acid propargyl alcohol
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水分散超支化共轭聚合物纳米粒子的制备及其对苦味酸的高灵敏荧光检测 被引量:1
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作者 栗华 吴晓甫 +3 位作者 杭昊 陈永红 童辉 王利祥 《高分子学报》 SCIE CAS CSCD 北大核心 2018年第2期248-256,共9页
采用Suzuki细乳液聚合以及后功能化反应,制备了季铵盐末端的水分散超支化共轭聚合物纳米粒子(HCPN-QA),用于高灵敏度和高选择性的检测2,4,6-三硝基苯酚(PA).带正电荷的季铵盐端基以及疏水的超支化共轭聚合物核心,使HCPN-QA对水中呈酸性... 采用Suzuki细乳液聚合以及后功能化反应,制备了季铵盐末端的水分散超支化共轭聚合物纳米粒子(HCPN-QA),用于高灵敏度和高选择性的检测2,4,6-三硝基苯酚(PA).带正电荷的季铵盐端基以及疏水的超支化共轭聚合物核心,使HCPN-QA对水中呈酸性的PA产生静电吸引与疏水富集的协同作用,产生高度灵敏的荧光猝灭响应,检测限达到0.18μg/L,猝灭常数达到6.36×10~7 L/mol,相比于有机相分散的超支化共轭聚合物纳米粒子HCPN-OMe,HCPN-QA检测限低了4个数量级,猝灭常数高出3个数量级.通过研究HCPN-QA粒径对PA检测灵敏度的影响,发现纳米粒子粒径对PA的检测灵敏度影响很小.并且,HCPN-QA对PA的猝灭响应显著高于TNT及其他硝基爆炸物,表现出很好的选择性以及竞争选择性.此外,HCPN-QA检测试纸对PA固体颗粒的检测表现出很高的灵敏度,检测限达到66 pg/mm^2. 展开更多
关键词 超支化共轭聚合物 纳米粒子 荧光传感 苦味酸 高灵敏检测
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