The use of hybrid systems for which the change in properties of one component triggers the change in properties of the other is of outmost importance when "on/off" states are needed. For such a reason, azobenzene compounds are one of the most used probes due to their high photoswitching efficiency. In this study, we consider a new derivative of azobenzene interacting with different lipid membrane phases as a versatile fluorescent probe for phase recognition. By means of a multiscale approach, we found that the cis and trans conformers have different positions and orientations in the different lipid membranes (DOPC for the liquid disordered phase and DPPC for the gel phase), and these have a profound effect on the optical properties of the system, for both one and two photon absorption. In fact, we found that the cis state is the "on" state when the probe is inserted into the DOPC membrane, while it is in the "off" state in the DPPC membrane. This behavior enhances the selectivity of this probe for phase recognition, since the different environments will generate different responses on the same conformer of the probe. The same effect is found for the fluorescence anisotropy analysis, for which the trans (cis) isomer in DOPC (DPPC) presents a fast decay time. Due to the "on/off" effect it is possible to screen the different membrane phases via fluorescence decay time analysis, making this new probe versatile for phase detection.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/jacs.6b13024 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
High-Performance Mechano-Sensitive Piezoelectric Nanogenerator from Post-Treated Nylon-11,11 Textiles for Energy Harvesting and Human Motion Monitoring.
ACS Appl Mater Interfaces
January 2025
School of Materials Science and Engineering, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou 450001, China.
Piezoelectric polymer textiles offer distinct advantages in the fabrication of wearable nanogenerators (NGs). One effective strategy to enhance the output capacity of NGs is to modulate the piezoelectric performance of the textiles. This paper focuses on further improving the piezoelectric properties of nylon-11,11 textiles through post-drawing and annealing treatments.
View Article and Find Full Text PDFComputational insights into the redox properties and electronic structures of [Tc=O] complexes: Implications for Tc-radiopharmaceuticals.
J Mol Graph Model
January 2025
"VINČA" Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, 11001, Belgrade, Serbia.
Technetium-99m plays a pivotal role in nuclear medicine, offering unique IMAGING capabilities due to its favorable physical and chemical properties. This study investigates the redox behavior and electronic structures of three representative Tc(V) oxo complexes, [TcO(HMPAO)], [TcO(Bicisate)], and [TcO(DMSA)], using computational techniques. Employing relativistic density functional theory with the Zero-Order Regular Approximation (ZORA), we analyze singlet-triplet energy gaps, Gibbs free energy changes, and redox potentials in neutral and acidic environments.
View Article and Find Full Text PDFImproved Hematology Analysis Based on Microfluidic Impedance Spectroscopy: Erythrocyte Orientation and Anisotropic Dielectric Properties of Flowing Blood.
Anal Chem
January 2025
School of Mechanical and Robotics Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea.
Electrochemical impedance spectroscopy has great potential for laboratory blood tests. The overall aim of this study is to develop a microfluidic sensor for determining the physical properties and hematological parameters of blood based on its dielectric spectra. Impedance was measured in flowing blood to prevent aggregation and sedimentation at frequencies between 40 Hz and 110 MHz.
View Article and Find Full Text PDFUnveiling the Dark Side of Flavonoid: Rutin Provokes Hepatotoxicity in Low-Dose 2-Amino-3-methylimidazo [4,5-] Quinoline-Exposed Mice via Regulating Gut Microbiota and Liver Metabolism.
J Agric Food Chem
January 2025
College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, Guangdong 524000, People's Republic of China.
2-Amino-3-methylimidazole [4,5-] quinoline (IQ) is a kind of heterocyclic amine (HCAs) with high carcinogenicity in hot processed meat. Rutin (Ru) is a flavonoid compound with anti-inflammatory and antioxidant properties. However, whether Ru is scatheless under IQ-stimulated potential unhealthy conditions, especially liver function, in vivo, is unknown.
View Article and Find Full Text PDFBiofortification of Acacia and Polyflower Honey with Pine sylvestris L. Bud Extracts: Exploring Antioxidant Variation Across Developmental Stages for Enhanced Nutritional Value.
Plant Foods Hum Nutr
January 2025
Food Engineering Department, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, 400372, Romania.
Honey is a valuable natural product with antioxidant properties, and its quality is influenced by various factors, including botanical origin and biofortification. Pine bud extracts, known for their antioxidant capacity, were explored to enhance the properties of acacia and polyflower honey. This study aimed to investigate the effect of pine bud extracts at different maturation stages on the moisture content, dry matter, antioxidant activity, and total phenolic content (TPC) of acacia and polyflower honey.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!