A recently synthesized conducting polymer poly(TBT6–NH2); poly(6-(4,7-di(thiophen-2-yl)-2H-benzo[d][1,2,3]triazol-2-yl)hexan-1-amine) was utilized as a matrix for biomolecule immobilization. After successful electrochemical deposition the polymer poly(TBT6–NH2) on the graphite electrodes, immobilization of choline oxidase (ChO) was carried out. Due to the free amino functional groups of the polymeric structure, ChO molecules were successfully immobilized onto the polymer surface via covalent binding. For this, glutaraldehyde (GA) was used as crosslinker and bifunctional agent. Hence, a robust binding between the support and the protein molecules was achieved. Scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) were used to monitor the surface morphologies of both the polymer and the bioactive layer and to confirm the binding of the protein. Amperometric measurements were recorded by monitoring oxygen consumption in the presence of choline as the substrate at −0.7 V. The optimized biosensor showed a very good linearity between 0.1 and 10 mM with a 7 s response time and a detection limit (LOD) of 16.8 μM to choline. Also, kinetic parameters, operational and storage stabilities were determined. Finally, designed system was applied for pesticide detection.
最近合成的导电聚合物聚(TBT6-NH2);聚(6-(4,7-二(噻吩-2-基)-2H-苯并[d][1,2,3]三唑-2-基)己-1-胺)被用作固定生物分子的基质。聚合物聚(TBT6-NH2)在石墨电极上成功电化学沉积后,进行了胆碱氧化酶(ChO)的固定。由于聚合物结构中的游离氨基官能团,胆碱氧化酶分子通过共价结合成功固定在聚合物表面。为此,戊二醛(GA)被用作交联剂和双功能剂。因此,支撑物和蛋白质分子之间实现了牢固的结合。扫描电子显微镜(SEM)和 X 射线光电子能谱(XPS)用于监测聚合物和生物活性层的表面形态,并确认蛋白质的结合。在 -0.7 V 电压下,通过监测以胆碱为底物时的耗氧量,记录了安培测量值。优化后的生物传感器在 0.1 至 10 mM 之间显示出非常好的线性,响应时间为 7 秒,对胆碱的检测限(LOD)为 16.8 μM。此外,还确定了动力学参数、操作和储存稳定性。最后,设计的系统被应用于农药检测。
벤조트리아졸 화합물 및 이를 포함하는 역구조 페로브스카이트 태양전지
申请人:Gwangju Institute of Science and Technology 광주과학기술원(319980993815) BRN ▼410-82-07550
公开号:KR20200115860A
公开(公告)日:2020-10-08
본 발명은 하기 화학식 1로 표시되는 벤조트리아졸 화합물 및 이를 포함하는 역구조 페로브스카이트를 제공한다: [화학식 1] (상기 화학식 1에서, R 내지 R 및 L의 정의는 명세서에서 정의한 바와 같다.)
A Poly(carbazole-alt-triazole) with Thiabendazole Side Groups as an “On-Off-On” Fluorescent Probe for Detection of Cu(II) Ion and Cysteine
作者:Liting Gao、Jinyao Xu、Haoyue Luo、Hong Lei、Xinai Chen、Jiayi Wan、Juhua Feng、Kuan Liu
DOI:10.1007/s10895-023-03164-9
日期:——
A novel conjugated polymer PCZBTA-TBZ containing thiabendazole as recognition unit was synthesized via Suzuki coupling reaction, and its structuralcharacterization, spectroscopic analysis and photophysicalproperties were investigated. In the metal ion response study, the addition of Cu2+ led to the occurrence of the photoinduced electron transfer (PET) mechanism, which significantly quenched the
Conformer Ring Flip Enhances Mechanochromic Performance of <i>ansa</i>-Donor–Acceptor–Donor Mechanochromic Torsional Springs
作者:Raphael Hertel、Wafa Maftuhin、Michael Walter、Michael Sommer
DOI:10.1021/jacs.2c06712
日期:2022.12.7
deformation, the ringflip precedes mechanically induced planarization of the ansa-DAD spring, the latter process producing a PL shift of 21 nm nN–1. Within the stress–strain diagram, the thiophene ringflip and DAD planarization are thus two separated processes that also cause irreversible and reversible mechanochromic responses, respectively, upon sample failure. As the thiophene ringflip requires much
基于供体-受体-供体 (DAD) 弹簧构象变化的机械发色团允许通过吸光度或光致发光 (PL) 波长的单调变化来感测作用在聚合物链上的力。在这里,我们确定了一系列噻吩 (D)-侧翼喹喔啉 (A) 作为分子扭转弹簧,用于室温下本体聚合物中的力传感。DAD 连接到聚合物基质的模式和连接器刚度是影响力转换到 DAD 弹簧的功效的关键参数,从而影响机械变色响应,正如在应力-应变实验期间体膜的原位 PL 光谱所探测的那样。PL 最大值的最大偏移,因此是最高的灵敏度,是从ansa获得的-DAD 弹簧展示桥接 D 单元和刚性 A 连接器。使用详细的光谱学和密度泛函理论计算,我们揭示了噻吩环翻转形式的构象异构体再分布是整体机械变色响应的主要部分。在变形早期阶段的力低至 27 pN 时,环翻转先于 ansa -DAD 弹簧的机械诱导平面化,后一过程产生 21 nm nN –1的 PL 偏移. 在应力-应变图中,噻吩环翻转和
Energy band gap modulation and photoinduced electron transfer fluorescence sensing properties of <scp>D–A</scp> conjugated polymers containing benzotriazole
作者:Haoyue Luo、Jinyao Xu、Xinai Chen、Jiayi Wan、Hong Lei、Yinshuang Chen、Juhua Feng、Kuan Liu
DOI:10.1002/pol.20230552
日期:2024.1
Two new conjugatedpolymers containing benzotriazole were synthesized via Suzuki coupling reaction, and the polymer with lower energy band gap was created by designing the structure of the acceptor unit by introducing thiophene unit at both ends of the benzotriazole. Surprisingly, the fluorescence emission of D–A conjugatedpolymer with modified unit shifted from blue to yellow light, and the polymer