Article
Chemistry, Analytical
Sally Qasim, Shu-Yu Hsu, Ezequiel Rossi, Zahra Salahshoor, Chung-Ho Lin, Luis Polo Parada, Maria Fidalgo
Summary: A label-free MIP sensor was fabricated for the detection of progesterone in aqueous solutions. The sensor exhibited photonic properties due to the polymerization inside colloidal crystals. Material characterization and experiments confirmed the sensor's high sensitivity and selectivity.
Article
Biophysics
Patrycja Lach, Alvaro Garcia-Cruz, Francesco Canfarotta, Alistair Groves, Jakub Kalecki, Dominik Korol, Pawel Borowicz, Kostiantyn Nikiforow, Maciej Cieplak, Wlodzimierz Kutner, Sergey A. Piletsky, Piyush Sindhu Sharma
Summary: Redox-active MIP-Gly NPs were developed by incorporating ferrocenylmethyl methacrylate into the synthesis process, enabling them to selectively determine glyphosate without the need for redox probe. MIP-Gly NPs synthesized using allylamine and squaramide-based monomers exhibited the highest selectivity. The MIP-Gly NPs modified Pt-SPEs were characterized using differential pulse voltammetry and electrochemical impedance spectroscopy, with changes in the oxidation peak of the ferrocenyl moieties serving as the analytical signal. The chemosensor showed a low limit of detection and a wide linear dynamic concentration range for glyphosate, allowing successful detection in spiked river water samples.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Engineering, Environmental
Shishir Venkatesh, Chi-Chung Yeung, Tan Li, Siu Chuen Lau, Qi-Jun Sun, Ling-Yi Li, Jin Hua Li, Michael H. W. Lam, Vellaisamy A. L. Roy
Summary: Histamine, a naturally occurring chemical in seafood, can cause undesirable inflammatory response when consumed in large amounts, hence the need for guidelines limiting its amount in fresh and processed seafood worldwide. Conventional histamine detection is slow and leads to bottlenecks in the supply chain, highlighting the importance of developing a rapid on-site detection system for seafood suppliers. The impedance-based histamine detection sensor described in the study can detect histamine levels in the range of 100-500 ppm and shows promise for detecting other food contaminants in aqueous solutions.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Analytical
Lorenzo Martello, Nina Maria Ainali, Dimitrios N. Bikiaris, Dimitra A. Lambropoulou
Summary: In this study, novel molecularly imprinted polymers (MIPs) were synthesized using penconazole as the template and various combinations of functional monomers and cross-linkers. The MIPs showed higher affinity for triazole pesticides in apple juice compared to non-imprinted polymers. The developed MIP-d-SPE-LC-MS method exhibited excellent selectivity and good performance for the enrichment and determination of triazole compounds in apple juice and river water samples.
MICROCHEMICAL JOURNAL
(2023)
Review
Chemistry, Analytical
Mashaalah Zarejousheghani, Parvaneh Rahimi, Helko Borsdorf, Stefan Zimmermann, Yvonne Joseph
Summary: There is growing global concern about the health risks of water and air pollution, with EPA listing 129 different chemical compounds as priority pollutants. Long-term exposure to these chemicals can cause severe health effects, and MIPs show great potential for developing sensors to detect these pollutants.
Article
Chemistry, Analytical
Dominik Korol, Anna Kisiel, Maciej Cieplak, Agata Michalska, Piyush Sindhu Sharma, Krzysztof Maksymiuk
Summary: Electrochemically active molecularly imprinted polypyrrole nanoparticles (PPy NPs) were synthesized using micelles. The NPs with estriol imprinting were prepared by polymerizing pyrrole with the aid of iron(III) p-toluenesulfonate. SEM and TEM confirmed the synthesis of imprinted PPy NPs around 60 nm in size. The NPs prepared with pristine pyrrole showed an imprinting factor of 4.2, while those prepared with derivatized pyrrole showed no imprinting. The electrochemical-based transduction allowed for the determination of estriol in a concentration range of 0.5-5 μM and 10-100 μM, with a limit of detection (LOD) of 0.16 μM. The MIP NP-coated electrode exhibited satisfactory selectivity towards estriol and its structural analogs.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Review
Chemistry, Analytical
Ruoyang Liu, Chi-Chiu Ko
Summary: MIP-based luminescent chemosensors have been widely studied due to their high specificity and sensitivity in molecular recognition and luminescence detection. Different strategies, including incorporation of luminescent functional monomers and surface-imprinting polymerization on luminescent nanomaterials, have been used to construct luminescent MIPs for various analytes. This review discusses the design strategies, sensing approaches, and applications of luminescent MIP-based chemosensors in biosensing, bioimaging, food safety, and clinical diagnosis, as well as the limitations and prospects for future development.
Article
Chemistry, Physical
Azam Zolfaghari Asl, Amir Abbas Rafati, Sadegh Khazalpour
Summary: Novel screen-printed gold electrodes modified with molecularly imprinted polyphenol were used for the detection of guanine and adenine in the presence of each other. The electrochemical polymerization method was used to synthesize a thin layer of molecularly imprinted polymer on the electrode surface. The fabricated sensors showed high sensitivity, good repeatability, and long-term stability, and were successfully utilized for the measurement of guanine and adenine in human serum samples.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Polymer Science
Guillaume Palaprat, Anne-Francoise Mingotaud, Dominique Langevin, Monique Mauzac, Jean-Daniel Marty
Summary: The study investigated a cholesteric network with two levels of chirality in gas phase towards the sorption properties of two enantiomers of a chiral amine, finding that both levels of chirality improved separation, with the presence of chiral-specific molecular cavities having a greater effect than the chiral environment.
Review
Chemistry, Multidisciplinary
Xinning Dong, Congcong Zhang, Xin Du, Zhenguo Zhang
Summary: Molecularly imprinted polymer (MIP) is a synthetic material that mimics the natural antibody-antigen system and is suitable for use in electrochemical sensors. However, the irregular shape and slow electron transfer rate of MIP limit the sensitivity and conductivity of the sensors. The integration of nanomaterials improves the sensing and recognition capability of MIP sensors.
Article
Chemistry, Analytical
Hui Jean Lim, Tridib Saha, Beng Ti Tey, Wen Siang Tan, Sharifah Syed Hassan, Chien Wei Ooi
Summary: In this study, a dopamine self-polymerisation method was used to functionalise the QCM crystal surface with a molecularly imprinted polydopamine (MIPDA) sensing film for detecting the hepatitis B core antigen (HBcAg). The MIPDA-QCM biosensor showed selective affinity and low detection limit for HBcAg.
Review
Chemistry, Multidisciplinary
Maylis Garnier, Michele Sabbah, Christine Menager, Nebewia Griffete
Summary: Hybrid molecularly imprinted polymers have the potential to enhance imaging, treatments, or a combination of both in nanomedicine, offering new interesting properties suitable for patient care.
Article
Materials Science, Multidisciplinary
Eduardo Aznar-Gadea, Pedro J. Rodriguez-Canto, Juan P. Martinez-Pastor, Andrii Lopatynskyi, Vladimir Chegel, Rafael Abargues
Summary: The study presents a solid-state plasmonic sensor based on Ag nanoparticles and a molecularly imprinted polymer for selective detection of 3-nitrotoluene. The sensor fabrication involves the in situ synthesis of Ag nanoparticles and molecular imprinting, resulting in enhanced specificity and sensitivity towards 3-NT.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Chemistry, Analytical
Aneta Kholova, Ivona Lhotska, Jakub Erben, Jiri Chvojka, Frantisek Svec, Petr Solich, Dalibor Satinsky
Summary: Advanced solid phase extraction (SPE) fibrous sorbents were compared for the extraction and clean-up of bisphenols from milk. Polycaprolactone composite nanofibers showed excellent clean-up efficiency and high recovery rates in a short analysis time.
Article
Biophysics
Yan Zhang, Yu-Sheng Feng, Xing-Hui Ren, Xi-Wen He, Wen-You Li, Yu-Kui Zhang
Summary: A nanozyme with bimetallic active sites was synthesized for the detection of vanillin, achieving high sensitivity and satisfactory recovery rates in real samples. This method could potentially be developed into a sensing platform for various applications.
BIOSENSORS & BIOELECTRONICS
(2022)