Vertically Ordered Mesoporous Silica-Nanochannel Film-Equipped Three-Dimensional Macroporous Graphene as Sensitive Electrochemiluminescence Platform.
Vertically Ordered Mesoporous Silica-Nanochannel Film-Equipped Three-Dimensional Macroporous Graphene as Sensitive Electrochemiluminescence Platform.
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垂直有序介孔二氧化硅-纳米通道膜三维大孔石墨烯作为灵敏电化学发光平台
DOI：
10.3389/fchem.2021.770512
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发表时间：
2021
影响因子：
5.5
通讯作者：
Liu J
中科院分区：
文献类型：
--
作者：
Gong J;Tang H;Luo X;Zhou H;Lin X;Wang K;Yan F;Xi F;Liu J
三维电化学发光（ECL）平台具有高灵敏度和良好的抗污染性，是直接和灵敏的分析复杂样品的迫切需要。在此，一种新的电化学发光传感平台的基础上，展示了垂直有序的介孔二氧化硅纳米通道膜（VMSF）的单片和大孔三维石墨烯（3DG）的设备。通过将3-氨丙基三乙氧基硅烷（APTES）电接枝到3DG上作为分子胶，采用电化学辅助自组装（EASA）方法生长的VMSF完全覆盖3DG表面，表现出较高的稳定性。利用3DG（高活性面积和电导率）和VMSF纳米通道（强静电富集）的特性，研制的VMSF/APTES/3DG传感器对三（2，2 ′-联吡啶）钌（Ru（bpy）32+）具有高灵敏度的电化学发光响应.利用VMSF/APTES/3DG传感器对Ru（bpy）32 +/三正丙胺（TPrA）体系的电化学发光的猝灭效应（ECL信号关闭模式），将其应用于对重要环境污染物4-氯苯酚的灵敏检测，检测限为30.3nM. VMSF/APTES/3DG传感器还可以使用ECL信号开启模式灵敏地检测最有效的抗组胺药扑尔敏（LOD为430 nM），因为它作为共反应物促进Ru（bpy）3 2+的ECL。结合VMSF优异的可分辨性，该传感器还可以实现对实际环境（湖水）和药物（药片）样品的分析。所提出的3D ECL传感器可能为开发高灵敏度ECL传感平台开辟新的途径。
Three-dimensional (3D) electrochemiluminescence (ECL) platform with high sensitivity and good anti-fouling is highly desirable for direct and sensitive analysis of complex samples. Herein, a novel ECL-sensing platform is demonstrated based on the equipment of vertically ordered mesoporous silica-nanochannel films (VMSF) on monolithic and macroporous 3D graphene (3DG). Through electrografting of 3-aminopropyltriethoxysilane (APTES) onto 3DG as molecular glue, VMSF grown by electrochemically assisted self-assembly (EASA) method fully covers 3DG surface and displays high stability. The developed VMSF/APTES/3DG sensor exhibits highly sensitized ECL response of tris(2,2′-bipyridyl) ruthenium (Ru (bpy)3 2+) taking advantages of the unique characteristics of 3DG (high active area and conductivity) and VMSF nanochannels (strong electrostatic enrichment). The VMSF/APTES/3DG sensor is applied to sensitively detect an important environmental pollutant (4-chlorophenol, with limit of detection or LOD of 30.3 nM) in term of its quenching effect (ECL signal-off mode) toward ECL of Ru (bpy)3 2+/tri-n-propylamine (TPrA). The VMSF/APTES/3DG sensor can also sensitively detect the most effective antihistamines chlorpheniramine (with LOD of 430 nM) using ECL signal-on mode because it acts as co-reactant to promote the ECL of Ru (bpy)3 2+. Combined with the excellent antifouling ability of VMSF, the sensor can also realize the analysis of actual environmental (lake water) and pharmaceutical (pharmacy tablet) samples. The proposed 3D ECL sensor may open new avenues to develop highly sensitive ECL-sensing platform.
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垂直有序介孔二氧化硅薄膜辅助无标记通用电化学发光适体传感器平台
影响因子：
7.4
作者：
Liu, Jinquan;He, Dinggeng;Mao, Yinfei
通讯作者：
Mao, Yinfei
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影响因子：
7.4
作者：
Huang, Xiao;Xie, Lisiqi;Su, Bin
通讯作者：
Su, Bin
DOI：
10.1021/acs.langmuir.1c00409
发表时间：
2021-04-06
期刊：
Langmuir : the ACS journal of surfaces and colloids
影响因子：
--
作者：
Gamero-Quijano A;Dossot M;Walcarius A;Scanlon MD;Herzog G
通讯作者：
Herzog G
影响因子：
8.8
作者：
Beluomini, Maisa Azevedo;Stradiotto, Nelson Ramos;Boldrin, Maria Valnice
通讯作者：
Boldrin, Maria Valnice
影响因子：
6.2
作者：
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通讯作者：
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