Article
Biochemistry & Molecular Biology
Viviana Mollica Nardo, Vincenzo Renda, Sebastiano Trusso, Rosina Celeste Ponterio
Summary: This paper details the fabrication, characterization, and testing of SERS-active substrates specifically designed for detecting pigments in artwork. The substrates were found to effectively amplify Raman scattering of various dyes and were stable in the pH range between 3 and 11. Additionally, vibrational DFT calculations provided a complete description of the observed SERS spectra.
Article
Polymer Science
Baoju Li, Pihan Nan, Zhuangzhuang Gao, Bin Tang, Shilun Qiu, Qianrong Fang
Summary: A room temperature P-COF membrane on porous alumina substrate with excellent rejection performance (99.7% for rhodamine B) and high water permeance (52 L m(-2) h(-1) bar(-1)) has been successfully obtained. The method of fabricating the membrane is simple and convenient.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Review
Chemistry, Analytical
Igor E. Uflyand, Vladimir A. Zhinzhilo, Victoria O. Nikolaevskaya, Boris Kharisov, Cesar M. Oliva Gonzalez, Oxana Kharissova
Summary: This review summarizes the recent applications of metal-organic frameworks (MOFs) in solid phase extraction (SPE) of organic dyes, focusing on the development of MOF performance enhancement strategies and their application in specific dye separation and real object analysis. Further research directions in using MOF in SPE of organic dyes are outlined for future exploration.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Applied
Parya Ezati, Yeong-Ju Bang, Jong-Whan Rhim
Summary: The novel pH-responsive color indicator prepared by adsorbing the natural naphthoquinone pigment shikonin onto cellulose paper can change color from red to dark blue based on pH levels. It demonstrates high stability and sensitivity to pH changes, making it useful for real-time monitoring of food quality in intelligent food packaging applications.
Article
Chemistry, Physical
Tarek Aysha, Mostafa Zain, Mohamed Arief, Yehya Youssef
Summary: In this study, six novel fluorescent disperse dyes were synthesized and their absorption spectra, dyeing performance, and color fastness were investigated. It was found that dyes containing phenylazo-pyrazolone structure showed better dyeing performance and dyeing stability on polyester fabrics.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Food Science & Technology
Fatemeh S. Mohseni-Shahri, Farid Moeinpour
Summary: An intelligent pH-sensing indicator containing Roselle and curcumin was developed as an on-package indicator tags to check the freshness of shrimp during storage at 4 degrees C. The colorimetric film showed response to changes in pH and produced various colors indicating the freshness and spoilage of packaged shrimp. Therefore, this smart packaging material can be utilized for real-time monitoring of the freshness of shrimp and aquatic products.
FOOD SCIENCE & NUTRITION
(2023)
Article
Biochemistry & Molecular Biology
Er-Jun Sun, Xiao-Yan Bai, Yu Chang, Qin Li, Xin-Ru Hui, Yan-Song Li, Yue Wang
Summary: By connecting metalloporphyrins to polymer materials through copolymerization, materials with both photoelectric and catalytic properties can be obtained. In this study, two metalloporphyrin/PMMA copolymers were synthesized and electrospun into fiber materials, showing efficient photocatalytic degradation of organic dyes.
Article
Chemistry, Physical
Zhong-Zheng Gao, Hui Zhao, Zhi-Xian Liang
Summary: Floatable PAM/CMC-CuS hydrogels were designed for efficient adsorption and easy collection of organic dyes from wastewater. The hydrogel exhibited fast adsorption rate, high adsorption capacity, and selective adsorption of cationic dyes. The adsorption data followed pseudo-second-order model and Langmuir equation. Moreover, the hydrogel showed excellent reusability and stability after multiple cycles.
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
(2022)
Article
Materials Science, Biomaterials
Astrid Tannert, Javier Garcia Lopez, Nikolay Petkov, Anela Ivanova, Kalina Peneva, Ute Neugebauer
Summary: Lysosomes are acidic degradation compartments in eukaryotic cells, and their dysfunction is associated with various diseases. A novel small molecule marker with reversible, pH-dependent spectral shifts has been developed for stable association with lysosomes and detection of lysosomal pH changes in cells.
JOURNAL OF MATERIALS CHEMISTRY B
(2021)
Article
Chemistry, Multidisciplinary
Boris Kharisov, Oxana Kharissova, Vladimir Zhinzhilo, Julia Bryantseva, Igor Uflyand
Summary: Researchers are currently highly interested in the solid-phase extraction of organic dyes using metal-organic frameworks (MOFs). In this study, a mixed-ligand Zr-MOF was used to study the adsorption characteristics of dyes, and the possibility of dye separation using column chromatography was explored.
APPLIED SCIENCES-BASEL
(2022)
Article
Food Science & Technology
Xueli Zhang, Xiaochen Chen, Jinming Dai, Haiying Cui, Lin Lin
Summary: The colorimetric film, sensitive to both ammonia and acidic environments, has the potential to monitor the freshness of pork in real-time without open packaging and direct contact.
FOOD PACKAGING AND SHELF LIFE
(2023)
Article
Food Science & Technology
Amal Al Obaidi, Irem Melda Karaca, Zehra Ayhan, Guliz Haskaraca, Emre Gultekin
Summary: This study developed a three-layer CO2-sensitive intelligent label for monitoring the concentration changes of CO2 in food packaging. Through experiments on simulation and chicken meat packaging, it was found that phenol red-based indicators showed a more distinct and noticeable color change.
FOOD PACKAGING AND SHELF LIFE
(2022)
Article
Materials Science, Multidisciplinary
Thi Thuy Dao, Thi Le Na Vo, Anh Tuan Duong, Dang Thanh Tran, Dinh Lam Nguyen, Van Vinh Pham, Raja Das, Huu Tuan Nguyen
Summary: ZnO nanoflakes were synthesized via the sol-gel method with a precursor solution pH of 13. The synthesized ZnO nanoflakes exhibited high crystallinity and had an optical band gap of 3.27 eV. They showed remarkable photocatalytic efficiency in the degradation of organic dyes under UV irradiation, with the highest efficiency observed for congo red (CR) at a pH of 4 for 10 min.
Article
Chemistry, Physical
Boyu Du, Wanjing Li, Lanfang Chai, Wei Li, Xing Wang, Xiaohong Chen, Jinghui Zhou, Run-Cang Sun
Summary: A lignin-based adsorbent with high positive charge and excellent biocompatibility was prepared, and its structure and adsorption capacity for different dyes were characterized. The results showed efficient adsorption for several dyes, with maximum adsorption capacities ranging from 41.85 to 134.61 mg/g. Additionally, the adsorbent exhibited antimicrobial activity and demonstrated no cytotoxic effect, making it a potential wound dressing material. This study provides a facile and eco-friendly strategy for dye removal and wound protection.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Environmental Sciences
H. Lee, F. Coulon, S. T. Wagland
Summary: This study investigated the recovery of metals from municipal solid waste, exploring the effects of depth and humic acid concentration on the release of metals. It was found that under specific conditions, metals could be effectively recovered, providing useful information for economically feasible metal recovery.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Analytical
Vera Dugandzic, Stephan Kupfer, Martin Jahn, Thomas Henkel, Karina Weber, Dana Cialla-May, Juergen Popp
SENSORS AND ACTUATORS B-CHEMICAL
(2019)
Article
Chemistry, Analytical
Abdullah S. Mondol, Milind D. Patel, Jan Rueger, Clara Stiebing, Andreas Kleiber, Thomas Henkel, Jurgen Popp, Iwan W. Schie
Article
Biotechnology & Applied Microbiology
Cornelia Reuter, Nicole Slesiona, Stefanie Hentschel, Oliver Aehlig, Antje Breitenstein, Andrea Csaki, Thomas Henkel, Wolfgang Fritzsche
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2020)
Article
Chemistry, Analytical
Mark Kielpinski, Oliver Walther, Jialan Cao, Thomas Henkel, J. Michael Koehler, G. Alexander Gross
Article
Environmental Sciences
Cornelia Reuter, Stefanie Hentschel, Antje Breitenstein, Eileen Heinrich, Oliver Aehlig, Thomas Henkel, Andrea Csaki, Wolfgang Fritzsche
Summary: This study successfully established a rapid and selective detection system for identifying human pathogenic water organisms using biomolecular methods, demonstrating its potential application in urban water samples.
WATER AND ENVIRONMENT JOURNAL
(2021)
Article
Multidisciplinary Sciences
Daniel Kraus, Andreas Kleiber, Enrico Ehrhardt, Matthias Leifheit, Peter Horbert, Matthias Urban, Nils Gleichmann, Guenter Mayer, Juergen Popp, Thomas Henkel
Summary: Label-free and gentle separation of cell stages with desired target properties from mixed stage populations is an important research task in modern biotechnological cultivation process. The reported microfluidic sorter system (MSS) significantly increased the purity of target cells in the sorted population.
Article
Engineering, Chemical
Julia Sophie Boeke, Daniel Kraus, Thomas Henkel
Summary: Reliable operation of lab-on-a-chip systems relies on precise and predictable fluid management, with pressure-driven flow control simplifying the process and enabling automation. Predicting the required pressure settings for achieving desired flow rates simplifies control tasks and offers opportunities for creating multi-component laminar flows and droplets.
Article
Chemistry, Analytical
Tamas Vermes, Mark Kielpinski, Thomas Henkel, Miquel A. Pericas, Esther Alza, Angelica Corcuera, Helmut Buschmann, Thomas Goldner, Andreas Urban
Summary: A new automated microfluidic screening assay has been developed in this study, allowing for the measurement of compound EC50 values in very short incubation times and the discrimination of different classes of CAMs. The system also revealed an intermediate CAM-N/A behavior in certain screening compounds.
ANALYTICAL METHODS
(2022)
Article
Materials Science, Multidisciplinary
Chandan Singh, Matthias Thiele, Andre Dathe, Sophie Thamm, Thomas Henkel, Gajjala Sumana, Wolfgang Fritzsche, Andrea Csaki
Summary: A two-step process involving extraction and exchange reactions was used to immobilize gold nanocubes on a glass surface, resulting in improved sensitivity for microfluidic sensing of glucose concentrations.
Article
Chemistry, Analytical
Paul-Gerald Dittrich, Daniel Kraus, Enrico Ehrhardt, Thomas Henkel, Gunther Notni
Summary: The paper investigates the integration of standard imaging flow cytometry with filter-on-chip technology for spatial and spectral measurement, and its application in the development of a multispectral imaging flow cytometry platform. The results demonstrate the potential of this approach for characterizing and classifying bioparticles in-flow, with potential for further applications.
Article
Chemistry, Analytical
Thomas Henkel, Guenter Mayer, Joerg Hampl, Jialan Cao, Linda Ehrhardt, Andreas Schober, Gregor Alexander Gross
Summary: Droplet-based microfluidic screening techniques can be connected to established microtiter plate-based screening and sample management workflows through interfacing tools. A bidirectional sampling interface for sample transfer from wells into droplets and vice versa droplets into wells is achieved using Digital Microfluidic Pipetting Tips (DMPT) and a robotic system.
Article
Engineering, Electrical & Electronic
Daniel Kraus, Julia Sophie Boeke, Enrico Ehrhardt, Thomas Henkel
Summary: This article introduces a method called Multispectral Imaging Flow Cytometry (MIFC) for tracking morphological and compositional changes of single cells. By using multispectral imaging, the amount and distribution of substances inside the cells can be measured, which has important applications in cell cultivation processes.
MICRO AND NANO ENGINEERING
(2022)
Review
Biochemical Research Methods
Andreas Kleiber, Daniel Kraus, Thomas Henkel, Wolfgang Fritzsche
Summary: Conventional flow cytometry (FC) has evolved as a powerful measurement method in clinical diagnostics, biology, life sciences and healthcare within the last decades. Imaging flow cytometry (IFC) extends the power of traditional FC by adding high resolution optical and spectroscopic information. Tomographic imaging flow cytometry (tIFC) was developed to access 3D information about the target particles, aiming to visualize surfaces and internal structures in a holistic way.
Proceedings Paper
Optics
Paul-Gerald Dittrich, Daniel Kraus, Thomas Henkel, Jurgen Popp, Maik Rosenberger, Gunther Notni
Summary: The study extended imaging flow cytometry (IFC) with snapshot-mosaic cameras for in-flow characterization of bioparticles, allowing for analysis and counting of single cells and whole cell populations. The use of spatial and spectrally resolving snapshot-mosaic cameras and real time capable multivariate data processing expands the possibilities for automated analysis of mixed bioparticle populations. The microalgae Haematococcus pluvialis (HP) was used in the experiments to demonstrate the usability of the system.
MICROFLUIDICS, BIOMEMS, AND MEDICAL MICROSYSTEMS XIX
(2021)
Article
Biochemical Research Methods
Andreas Kleiber, Anuradha Ramoji, Guenter Mayer, Ute Neugebauer, Juergen Popp, Thomas Henkel
Article
Chemistry, Organic
Faiza Diaba, Gisela Trenchs
Summary: The first violet light-mediated synthesis of gamma- and delta-lactams from N-alkenyl trichloroacetamides is reported in this paper. The reactions are conducted in tetrahydrofuran or 2-methyltetrahydrofuran as the sole solvent without catalysts or additives, under non-anhydrous conditions in an air atmosphere where the solvent serves as the radical initiator.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Feroze Hussain, Sajjad Ahmed, Ashiq Hussain Padder, Qazi Naveed Ahmed
Summary: This study reports a novel and efficient one-pot synthesis method for mixed phosphorotrithioates, which does not require supplementary additives and shows broad applicability.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Hyunjin Oh, Ikyon Kim
Summary: A new 1,2,4-triazole-pyrrolo[1,2-a]pyrazine hybrid system, 6-acylpyrrolo[1,2-a][1,2,4]triazolo[5,1-c]pyrazine, was synthesized using a catalyst-free method. This method involved sequential exposure of pyrrole-2-carbonitrile-derived substrates to DMF-DMA and acyl hydrazide, resulting in the formation of acylated pyrazine and 1,2,4-triazole rings, enabling the installation of various substituents at specific positions on the core skeleton.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Ming Yan, Si-fan Wang, Yong-po Zhang, Jin-zhong Zhao, Zhuo Tang, Guang-xun Li
Summary: Here we developed an efficient photocatalytic approach for the convenient preparation of sulfinamides. The reaction allows for the gram-scale preparation of sulfinamides and the one-pot synthesis of various sulfonyl amides.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Farzaneh Bandehali-Naeini, Zahra Tanbakouchian, Noushin Farajinia-Lehi, Nicolas Mayer, Morteza Shiri, Martin Breugst
Summary: Two tandem catalytic systems were developed for the synthesis of novel 3,4-disubstituted maleimides using the same Ugi adducts. Different maleimide structures can be synthesized using either Pd or Cu catalysis.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Tanya Raghava, Anjan Chattopadhyay, Subhadeep Banerjee, Nivedita Sarkar
Summary: Amine substitution of two ortho fluorine atoms of tetrafluoroterephthalonitrile through SNAr chemistry is easily achievable. But further fluorine substitution is only possible under forcing conditions, yielding valuable fluorophores for bioimaging.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Review
Chemistry, Organic
Anju Chadha, Santosh Kumar Padhi, Selvaraj Stella, Sowmyalakshmi Venkataraman, Thangavelu Saravanan
Summary: Alcohol dehydrogenases are enzymes that use cofactors for oxidation or reduction reactions of alcohols or carbonyl compounds. They are utilized in green chemistry and have applications in the production of pharmaceuticals. Recombinant enzymes have solved the challenge of producing purified enzymes in large quantities. Engineered alcohol dehydrogenases have been used in asymmetric synthesis in industry. Various methods have been established for regenerating expensive cofactors to make the enzymatic process more efficient and economically viable.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
