Article
Biophysics
Roman A. Barmin, Elizaveta A. Maksimova, Polina G. Rudakovskaya, Alexey Gayer, Evgeny A. Shirshin, Kirill S. Petrov, Daria A. Terentyeva, Olga Gusliakova, Olga A. Sindeeva, Oleg A. Klimenko, Roman N. Chuprov-Netochin, Alexander A. Solovev, Gaoshan Huang, Anastasia Ryabova, Victor B. Loschenov, Dmitry A. Gorin
Summary: Gas-liquid interfaces have gained interest in biomedicine, particularly in the use of microbubbles as theranostic platforms. In this study, two commercially available photosensitizers were conjugated to bovine serum albumin before microbubble synthesis to enhance photodynamic therapy. The conjugates increased microbubble concentration and stability compared to plain microbubbles. Agents based on one of the photosensitizers demonstrated higher photodynamic activity and microbubbles showed acoustic stability in human blood plasma. The study concludes that these microbubble platforms have potential for further applications in photodynamic therapy.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Shuang Zhou, Zhong Wang, Chenyu Dong, Jie Bian, Weihua Zhang
Summary: This study investigated the wavelength-dependent laser-induced dynamic annealing of single plasmonic nano-antennas using in situ white light spectroscopy. The experiment revealed unexpected back-and-forth motions of rapidly melted single nano-antennas under excitation with a 532 nm laser, while gradual opening of nanogaps was observed with a 405 nm laser. Theoretical analyses suggested that the complex dynamics were caused by multiphysical processes at the nanoscale induced by the laser.
Article
Chemistry, Multidisciplinary
Ye Yuan, Hamed Almohammadi, Julie Probst, Raffaele Mezzenga
Summary: This study explores the coupling between orientationally ordered amyloid fibrils and rod-shaped plasmonic nanoparticles, demonstrating enhanced fluorescence in the hybrid material. The findings suggest a potential approach to improve the detection of amyloid deposits based on their enhanced intrinsic luminescence.
ADVANCED MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
N. A. V. N. E. E. T. Kaur, G. A. U. T. A. M. Das
Summary: The authors developed plasmonic structures of zinc and zinc oxide on the surface of a tapered optical fiber using optical tweezing. The effect of the tweezing conditions on the distribution of the zinc or zinc oxide on the tapered fiber surface was investigated.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Chemistry, Physical
Bjorn M. Reinhard
Summary: Light can effectively kill microorganisms. UV-C light is commonly used for sterilization, but high-energy light can cause unwanted damage. Plasmonic nanostructures can enhance electromagnetic fields and have unique light-induced responses, resulting in strong antimicrobial effects even for wavelengths without plasmonic enhancement. This paper examines plasmon-enhanced antimicrobial strategies, explains the underlying mechanisms, and discusses applications.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Andrea Rogolino, Nathalie Claes, Judit Cizaurre, Aimar Marauri, Alba Jumbo-Nogales, Zuzanna Lawera, Joscha Kruse, Maria Sanroman-Iglesias, Ibai Zarketa, Unai Calvo, Elisa Jimenez-Izal, Yury P. Rakovich, Sara Bals, Jon M. Matxain, Marek Grzelczak
Summary: This work presents the use of a water-soluble conjugated polymer as a surface ligand for gold nanoparticles to achieve plasmonic catalysis under visible light. The metal-polymer heterojunction, rich in sulfonate functional groups, contributes to the interaction between electron-donor molecules and the plasmonic photocatalyst. The tight binding of the polymer to the gold surface eliminates the need for conventional transition-metal surface cocatalysts and enhances the reactivity.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Bingcheng Huang, Junri Wen, Hongjie Yu, Le Xu, Haijian Wu, Kuizhi Chen, Tiantian Zhang, Qiuhao Ye, Yiru Peng
Summary: The synergistic effect of water soluble morpholine methylated phthalocyanine loaded on the surface of multilayer polyelectrolyte-coated gold nanorods for photodegradation of DNA was investigated. Results showed the potential of the nanoparticles for synergistic photodynamic and photothermal therapy.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Chemistry, Physical
Xiaolu Zhuo, David Vila-Liarte, Shengyan Wang, Dorleta Jimenez de Aberasturi, Luis M. Liz-Marzan
Summary: A study on the stability of chiral gold nanorods (Au NRs) covered by different protecting shells was conducted. The findings can be applied to other chiral plasmonic nanoparticles and address concerns of instability in various applications.
CHEMISTRY OF MATERIALS
(2023)
Letter
Chemistry, Physical
Jiachen Zhang, Lei Zhang, Qun Zhang, Yi Luo
Summary: In this study, we demonstrate a counterintuitive interplay between modes in the plasmonic system of gold nanorods, wherein energy transfers from the lower-energy longitudinal mode to the higher-energy transverse mode. The opening of this energy transfer channel is enabled by an energy upconversion process with the longitudinal mode, and the solvent environment plays a critical role. The findings provide insights into the elusive intermode interplay in plasmonic systems and offer strategies to harness hot electrons for plasmon-mediated applications.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Jiachen Zhang, Lei Zhang, Qun Zhang, Yi Luo
Summary: This study demonstrates a counterintuitive interplay between different modes in the plasmonic system of gold nanorods, where energy is transferred from the lower-energy longitudinal mode to the higher-energy transverse mode. The solvent environment plays a critical role in enabling this energy transfer. Control experiments using ultrafast spectroscopy provide verification and manipulation of this phenomenon, as well as addressing the subtle intermode dynamic screening effect in this unary plasmonic system.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Evelin L. de Oliveira, Sabrina B. S. Ferreira, Lidiane de Castro-Hoshino, Katieli da S. S. Campanholi, Italo R. Calori, Flavia A. P. de Morais, Elza Kimura, Ranulfo C. da Silva Junior, Marcos L. Bruschi, Francielle Sato, Noboru Hioka, Wilker Caetano
Summary: This study proposed a drug delivery platform using bioadhesive and thermoresponsive hydrogels to enhance the bioavailability of a photosensitizer for localized administration. The platform demonstrated excellent potential in treating skin infections through permeation studies and chemical photodynamic efficiency assays, showing minimal impact on cell viability and proliferation. The platform also showed inhibition of Staphylococcus aureus strain, indicating its potential in dermatological infection treatment.
Article
Biochemistry & Molecular Biology
Nokuphila Winifred Nompumelelo Simelane, Gauta Gold Matlou, Heidi Abrahamse
Summary: This study reports on the synthesis, characterization, and photodynamic therapy efficacy of a novel aluminium (III) chloride phthalocyanine (AlClPcTS41) and its conjugation to PEGylated copper-gold nanoparticles (PEG-CuAuNPs) for colon cancer treatment. The AlClPcTS41-PEG-CuAuNPs demonstrated significant photodynamic therapy effects, leading to decreased cell viability and potential apoptosis induction in Caco-2 cells. These findings highlight the potential of AlClPcTS41 and AlClPcTS41-PEG-CuAuNPs in enhancing the cytotoxic effect of photodynamic therapy.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Optics
Jian Zhu, Li-na Meng, Guo-jun Weng, Jian-jun Li, Jun-wu Zhao
Summary: The plasmonic absorption properties of bimetallic Au-Pt core-shell nanorods were investigated theoretically, with a focus on the environmental dielectric constant's impact on the absorption intensity comparison between different peaks. Increasing the environmental dielectric constant can enhance the absorption discrepancy between the Pt-L and Au-T bands, improving refractive index sensing performance. This sensing can be further improved by increasing the Pt coating thickness or aspect ratio of inner Au nanorod.
EUROPEAN PHYSICAL JOURNAL D
(2021)
Article
Biotechnology & Applied Microbiology
Beilei Gong, Yuanbing Shen, Huiyan Li, Xiaojun Li, Xia Huan, Jihong Zhou, Yuqing Chen, Jian Wu, Wei Li
Summary: Gold nanoparticles are considered a versatile platform for biomedical applications due to their strong and tunable surface plasmon resonance effect and good biocompatibility. This study designed a new nanoplatform incorporating gold nanorods and indocyanine green to enhance photodynamic/photothermal combination therapy. The polymer shell in the nanoplatform has thermo-responsive characteristics that control drug release at tumour sites, leading to increased drug aggregation and improved therapeutic efficacy.
JOURNAL OF NANOBIOTECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Yiming Wang, Nitya Sai Reddy Satyavolu, Hong Yang, Yi Lu
Summary: This study systematically analyzed the evolution of structural and functional parameters in the growth of Au-Ag nanostructures controlled by two DNA sequences. It deconvoluted the contributions of structural parameters in affecting the plasmonic properties and designed new nanostructures by exchanging DNA sequences.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)