共查询到6条相似文献,搜索用时 0 毫秒
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Inside Cover: Red Blood Cells Polarize Green Laser Light Revealing Hemoglobin′s Enhanced Non‐Fundamental Raman Modes (ChemPhysChem 18/2014) 下载免费PDF全文
Dr. Katarzyna M. Marzec Dr. David Perez‐Guaita Dr. Marleen de Veij Prof. Don McNaughton Prof. Malgorzata Baranska Dr. Matthew W. A. Dixon Prof. Leann Tilley Prof. Bayden R. Wood 《Chemphyschem》2014,15(18):3882-3882
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Visualization of Vibrational Modes in Real Space by Tip‐Enhanced Non‐Resonant Raman Spectroscopy 下载免费PDF全文
Dr. Sai Duan Dr. Guangjun Tian Prof. Dr. Yi Luo 《Angewandte Chemie (International ed. in English)》2016,55(3):1041-1045
We present a general theory to model the spatially resolved non‐resonant Raman images of molecules. It is predicted that the vibrational motions of different Raman modes can be fully visualized in real space by tip‐enhanced non‐resonant Raman scattering. As an example, the non‐resonant Raman images of water clusters were simulated by combining the new theory and first‐principles calculations. Each individual normal mode gives rise its own distinct Raman image, which resembles the expected vibrational motions of the atoms very well. The characteristics of intermolecular vibrations in supermolecules could also be identified. The effects of the spatial distribution of the plasmon as well as nonlinear scattering processes were also addressed. Our study not only suggests a feasible approach to spatially visualize vibrational modes, but also provides new insights in the field of nonlinear plasmonic spectroscopy. 相似文献
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Giulia Morgese Bas F. M. de Waal Silvia Varela‐Aramburu Anja R. A. Palmans Lorenzo Albertazzi E. W. Meijer 《Angewandte Chemie (International ed. in English)》2020,59(39):17229-17233
Understanding cell/material interactions is essential to design functional cell‐responsive materials. While the scientific literature abounds with formulations of biomimetic materials, only a fraction of them focused on mechanisms of the molecular interactions between cells and material. To provide new knowledge on the strategies for materials/cell recognition and binding, supramolecular benzene‐1,3,5‐tricarboxamide copolymers bearing benzoxaborole moieties are anchored on the surface of human erythrocytes via benzoxaborole/sialic‐acid binding. This interaction based on both dynamic covalent and non‐covalent chemistries is visualized in real time by means of total internal reflection fluorescence microscopy. Exploiting this imaging method, we observe that the functional copolymers specifically interact with the cell surface. An optimal fiber affinity towards the cells as a function of benzoxaborole concentration demonstrates the crucial role of multivalency in these cell/material interactions. 相似文献
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Monitoring of Endogenous Hydrogen Sulfide in Living Cells Using Surface‐Enhanced Raman Scattering 下载免费PDF全文
Dr. Da‐Wei Li Lu‐Lu Qu Kai Hu Prof. Dr. Yi‐Tao Long Prof. Dr. He Tian 《Angewandte Chemie (International ed. in English)》2015,54(43):12758-12761
Hydrogen sulfide (H2S) has emerged as an important gasotransmitter in diverse physiological processes, although many aspects of its roles remain unclear, partly owing to a lack of robust analytical methods. Herein we report a novel surface‐enhanced Raman scattering (SERS) nanosensor, 4‐acetamidobenzenesulfonyl azide‐functionalized gold nanoparticles (AuNPs/4‐AA), for detecting the endogenous H2S in living cells. The detection is accomplished with SERS spectrum changes of AuNPs/4‐AA resulting from the reaction of H2S with 4‐AA on AuNPs. The SERS nanosensor exhibits high selectivity toward H2S. Furthermore, AuNPs/4‐AA responds to H2S within 1 min with a 0.1 μM level of sensitivity. In particular, our SERS method can be utilized to monitor the endogenous H2S generated in living glioma cells, demonstrating its great promise in studies of pathophysiological pathways involving H2S. 相似文献