Results 51 to 60 of about 40,674 (266)

Photosensitive chalcogenide metasurfaces supporting bound states in the continuum [PDF]

, 2019
We study, both theoretically and experimentally, tunable metasurfaces supporting sharp Fano-resonances inspired by optical bound states in the continuum. We explore the use of arsenic trisulfide (a photosensitive chalcogenide glass) having optical properties which can be finely tuned by light absorption at the post-fabrication stage.
arxiv   +1 more source

Hollow‐Structured Nanorobot with Excellent Magnetic Propulsion for Catalytic Pollutant Degradation, Anti‐Bacterial and Biofilm Removal

Advanced Healthcare Materials, EarlyView.
A hollow‐structured Fe3O4@AgAu@PDA‐ZnPc nanosphere has been developed, exhibiting controllable catalytic activity and “photothermal‐photodynamic‐Ag+” coupling antibacterial characteristics. When subjected to a rotating magnetic field, these performances are uniquely enhanced by magnetic propulsion, allowing the nanosphere to function as a magnetic ...
Jing Wang, Guangjin Yu, Qunling Fang, Yunqi Xu, Jie Zhang, Ailing Hui, Shouhu Xuan, Ken Cham‐Fai Leung   +7 more
wiley   +1 more source

Recent Applications of Mesoporous Silica Nanoparticles in Gene Therapy

Advanced Healthcare Materials, EarlyView.
The review summarizes the synthesis of mesoporous silica nanoparticles (MSNs) with modifiable surface properties, functionalization strategies, mechanism of therapeutic payload release, and current applications in gene therapy, focusing on their capabilities in the targeted delivery of therapeutic nucleic acids, CRISPR‐Cas systems, and other genetic ...
Tamanna Binte Huq, Punnya Anil Kumar Jeeja, Sudip Kumar Dam, Sabya Sachi Das, Juan L. Vivero‐Escoto   +4 more
wiley   +1 more source

THE STUDY OF THE OPTICAL PROPERTIES OF CYCLODEXTRIN-PHOTOSENSITIZER mTHPC COMPLEXES

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioèlektroniki, 2019
The photostability of complexes of the mTHPC photosensitizer with different types of cyclodextrins was studied. The photostability is a characteristic of the bond strength of the photosensitizer-carrier complex. The conclusions about the most appropriate
M. V. Goltsev, N. A. Nedzvedz, V. P. Zorin   +2 more
doaj  

Ruthenium Picolinate Complex as a Redox Photosensitizer With Wide-Band Absorption

Frontiers in Chemistry, 2019
Ruthenium(II) picolinate complex, [Ru(dmb)2(pic)]+ (Ru(pic); dmb = 4,4′-dimethyl-2,2′-bipyridine; Hpic = picolinic acid) was newly synthesized as a potential redox photosensitizer with a wider wavelength range of visible-light absorption compared with ...
Yusuke Tamaki, Kazuma Tokuda, Yasuomi Yamazaki, Daiki Saito, Yutaro Ueda, Osamu Ishitani   +5 more
doaj   +1 more source

STUDYING THE OPTICAL RANGE OF RESEARCH ON THE RESULTS OF MEDICINAL PLANTS [PDF]

Biomedicinskaâ Inženeriâ i Èlektronika, 2017
The article is devoted to the consideration of the effect of light emitting radiation on the transmission coefficient of solutions of medicinal plant infusions. It is shown that the effect of radiation leads to a change in the transmission coefficient of
Ignatova T.M., Lavrinenko O.O. , Grinko S.S.   +2 more
doaj   +1 more source

A Quantum Mechanical Description of Photosensitization in Photodynamic Therapy using a Two-Electron Molecule Approximation [PDF]

arXiv, 2023
A fundamental, Quantum Mechanical description of photoactivation of a generic photosensitizer and the ensuing transfer of energy to endogenous oxygen as part of the Type II pathway to photodamage during photodynamic therapy (PDT) is presented. The PS and molecular oxygen are approximated as two-electron molecules.
arxiv  

Tumor‐Targeted Exosome‐Based Heavy Atom‐Free Nanosensitizers With Long‐Lived Excited States for Safe and Effective Sono‐Photodynamic Therapy of Solid Tumors

Advanced Healthcare Materials, EarlyView.
Engineered exosome‐based heavy atom‐free nanosensitizers are developed for safe and targeted sono‐photodynamic therapy of solid tumors. The IR820‐TPE‐loaded, biotin‐conjugated exosomes (IR820‐TPE@B‐Exo) demonstrate significant promise for NIR fluorescence imaging‐guided sono‐photodynamic cancer therapy.
Van‐Nghia Nguyen, Thuy Giang Nguyen Cao, Hyunsun Jeong, Quan Truong Hoang, Binh T. T. Pham, Jieun Bang, Chang Woo Koh, Ji Hee Kang, Jeong Hyun Lee, Xiaofeng Wu, Won Jong Rhee, Young Tag Ko, K. M. K. Swamy, Sungnam Park, JaeHong Park, Min Suk Shim, Juyoung Yoon   +16 more
wiley   +1 more source

Photosensitizer-Embedded Polyacrylonitrile Nanofibers as Antimicrobial Non-Woven Textile

Nanomaterials, 2016
Toward the objective of developing platform technologies for anti-infective materials based upon photodynamic inactivation, we employed electrospinning to prepare a non-woven textile comprised of polyacrylonitrile nanofibers embedded with a porphyrin ...
Sarah L. Stanley, Frank Scholle, Jiadeng Zhu, Yao Lu, Xiangwu Zhang, Xingci Situ, Reza A. Ghiladi   +6 more
doaj   +1 more source

Ring-Fused meso-Tetraarylchlorins as Auspicious PDT Sensitizers: Synthesis, Structural Characterization, Photophysics, and Biological Evaluation

Frontiers in Chemistry, 2022
Novel 4,5,6,7-tetrahydropyrazolo[1,5-a]pyridine-fused meso-tetraarylchlorins, with different degrees of hydrophilicity (with methyl ester, hydroxymethyl, and carboxylic acid moieties), have been synthesized and their photophysical characterization as ...
Mafalda Laranjo, Mafalda Laranjo, Mafalda Laranjo, Nelson A. M. Pereira, Andreia S. R. Oliveira, Márcia Campos Aguiar, Márcia Campos Aguiar, Gonçalo Brites, Bruno F. O. Nascimento, Beatriz Serambeque, Beatriz Serambeque, Bruna D. P. Costa, João Pina, J. Sérgio Seixas de Melo, Marta Pineiro, M. Filomena Botelho, M. Filomena Botelho, M. Filomena Botelho, Teresa M. V. D. Pinho e Melo   +18 more
doaj   +1 more source