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Manifestation of Rouse and Entanglement Dynamics in Non-Cross-Linked and Cross-Linked Polymers Studied by Field-Cycling and Multiple Quantum NMR.
J Phys Chem B
January 2025
Nordbayerisches NMR-Zentrum, Universität Bayreuth, 95447 Bayreuth, Germany.
Rubbers prepared from technical poly(butadiene) and natural poly(isoprene) are studied by field-cycling (FC) H NMR relaxometry to elucidate the changes of the relaxation spectrum. Starting with the non-cross-linked polymer successively cross-links are introduced via sulfur or peroxide vulcanization. Applying an advanced home-built relaxometer allows one to probe entanglement dynamics in addition to Rouse dynamics.
View Article and Find Full Text PDFExtracting and analyzing micronuclei from mouse two-cell embryos fertilized with freeze-dried spermatozoa.
Commun Biol
January 2025
Faculty of Life and Environmental Sciences, University of Yamanashi, Yamanashi, Japan.
Abnormal chromosome segregation (ACS) in preimplantation embryos causes miscarriages. For a normal pregnancy, it is necessary to reduce ACS occurrences in embryos. However, the causes of such abnormalities are unclear because no method to extract the segregated chromosomes from the blastomeres for detailed analysis.
View Article and Find Full Text PDFRational Modification of a Cross-Linker for Improved Flexible Protein Structure Modeling.
Anal Chem
January 2025
Institute of Organic Chemistry, University of Vienna, Währinger Straße 38, 1090 Wien, Austria.
Chemical cross-linking/mass spectrometry (XL-MS) has emerged as a complementary tool for mapping interaction sites within protein networks as well as gaining moderate-resolution native structural insight with minimal interference. XL-MS technology mostly relies on chemoselective reactions (cross-linking) between protein residues and a linker. DSSO represents a versatile cross-linker for protein structure investigation and in-cell XL-MS.
View Article and Find Full Text PDFIn-Situ Cross-Linked Polymers for Enhanced Thermal Cycling Stability in Flexible Perovskite Solar Cells.
Angew Chem Int Ed Engl
December 2024
Key Lab for Special Functional Materials of Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Nanoscience and Materials Engineering, Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng, 475004, P. R. China.
Flexible perovskite solar cells (FPSCs) are a promising emerging photovoltaic technology, with certified power conversion efficiencies reaching 24.9 %. However, the frequent occurrence of grain fractures and interface delamination raises concerns about their ability to endure the mechanical stresses caused by temperature fluctuations.
View Article and Find Full Text PDFDNA Damage Response Network and Intracellular Redox Status in the Clinical Outcome of Patients with Lung Cancer.
Cancers (Basel)
December 2024
Institute of Chemical Biology, National Hellenic Research Foundation, 11635 Athens, Greece.
: DNA damage response (DDR) is a network of molecular pathways associated with the pathogenesis and progression of several diseases, as well as the outcome of chemotherapy. Moreover, the intracellular redox status is essential for maintaining cell viability and controlling cellular signaling. Herein, we analyzed DDR signals and redox status in peripheral blood mononuclear cells (PBMCs) from patients with lung cancer with different response rates to platinum-based chemotherapy.
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