Results 41 to 50 of about 59,243 (260)

Janus electrocatalytic flow-through membrane enables highly selective singlet oxygen production

Nature Communications, 2020
Electrocatalytic processes are promising for automated and scalable synthesis of singlet oxygen, but they are energy- and chemical-intensive. Here the authors present a Janus electrocatalytic membrane that selectively produces singlet oxygen with low ...
Yumeng Zhao, Meng Sun, Xiaoxiong Wang, Chi Wang, Dongwei Lu, Wen Ma, Sebastian A. Kube, Jun Ma, Menachem Elimelech   +8 more
doaj   +1 more source

Parallel fluorescence and phosphorescence monitoring of singlet oxygen photosensitization in rats [PDF]

Journal of Innovative Optical Health Sciences, 2015
The time- and spectral-resolved set-up for measurements of weak infrared luminescence of photosensitizers (PSs) and singlet oxygen using optical lightguides was used on skin of laboratory animals in vivo.
Roman Dědic, Adam Stíbal, Vojtěch Vyklický, Miloslav Franěk, Antonín Svoboda, Jan Hála   +5 more
doaj   +1 more source

One‐Step Curcumin‐Mediated Multiphoton Lithography for Bioactive 3D Scaffolds

Advanced Functional Materials, EarlyView.
Curcumin‐mediated multiphoton lithography enables one‐step fabrication of highly architected complex gelatin methacryloyl scaffolds by exploiting curcumin as a multifunctional bioactive photoinitiator. The resulting 3D structures support mesenchymal stem cell adhesion, proliferation, and migration, while exhibiting dual antibacterial activity through ...
Myrto Charitaki, Michalis Stavrou, Chrysanthi Pinelopi Apostolidou, Elmina Kabouraki, David Gray, Anna Mitraki, Anthi Ranella, Maria Farsari   +7 more
wiley   +1 more source

Supramolecular Control of Singlet Oxygen Generation

Molecules, 2021
Singlet oxygen (1O2) is the excited state electronic isomer and a reactive form of molecular oxygen, which is most efficiently produced through the photosensitized excitation of ambient triplet oxygen.
Akshay Kashyap, Elamparuthi Ramasamy, Vijayakumar Ramalingam, Mahesh Pattabiraman   +3 more
doaj   +1 more source

Tailored Diketopyrrolopyrrole Derivatives for Efficient Deep‐Red Organic Lasers

Advanced Functional Materials, EarlyView.
Tailored diketopyrrolopyrrole derivatives exhibit high stable amplified spontaneous emission with single or dual bands. Incorporated into distributed‐feedback lasers based on one‐ and two‐dimensional dichromated‐gelatin diffractive gratings, these materials provide a robust, flexible platform for integrated organic deep‐red light sources. ABSTRACT Deep‐
Pablo Pasqués‐Gramage, Abelardo Sánchez‐Oliva, Álex Farrando‐Pérez, Pedro G. Boj, M. Victoria Gómez, Ana M. Rodríguez, Pilar Prieto, Rafael Muñoz‐Mármol, Andrew J. Musser, Iván Torres‐Moya, María A. Díaz‐García   +10 more
wiley   +1 more source

Subcellular Singlet Oxygen and Cell Death: Location Matters

Frontiers in Chemistry, 2020
We developed a tool for targeted generation of singlet oxygen using light activation of a genetically encoded fluorogen-activating protein complexed with a unique dye molecule that becomes a potent photosensitizer upon interaction with the protein.
Pingping Liang, Pingping Liang, Pingping Liang, Dmytro Kolodieznyi, Dmytro Kolodieznyi, Yehuda Creeger, Byron Ballou, Marcel P. Bruchez, Marcel P. Bruchez, Marcel P. Bruchez   +9 more
doaj   +1 more source

Rational Design of Organic Chromophores for Simultaneously Trig‐gering Redox Imbalance and Tracking Organelles in Biological Sys‐tems Under Near‐Infrared Light Irradiation

Advanced Healthcare Materials, EarlyView.
TOC represents the synthesis of theory‐guided novel near‐infrared (NIR) light‐absorbing organic photosensitizers (OPS) enabling redox‐induced tumor phototherapy and single‐cell organelle tracking. ABSTRACT The design of organic photosensitizers that operate efficiently in the near‐infrared (NIR) region remains challenging due to the need to balance ...
Pragti, Bidyut Kumar Kundu, Jiajie Diao, Yujie Sun   +3 more
wiley   +1 more source

Enrolling reactive oxygen species in photon-to-chemical energy conversion: fundamentals, technological advances, and applications

Advances in Physics: X, 2021
In theory, oxygen (O2) is an ideal chemical reagent because of its high relative abundance and negligible environmental toxicity. In practice however, by the nature of its ground state electronic configuration, many chemical reactions involving O2 are ...
Irving D. Rettig, Theresa M. McCormick
doaj   +1 more source

Conjugated Porphyrin Polymer With Superior Charge Transfer for Photodynamic‐Immunomodulatory Prevention of CIED Infection in Diabetes

Advanced Healthcare Materials, EarlyView.
Under NIR irradiation, PTCPP generates ROS to eliminate MRSA biofilms and promote M1 macrophage polarization for phagocytosis. After bacterial clearance, the material is phagocytosed by macrophages, shifting their polarization to M2 phenotype via metabolic reprogramming, which synergistically enhances anti‐infection therapy and wound healing.
Honghao Ma, Jinguo Xu, Rongrong Gu, Chuanhui Dong, Te Chen, Yi Mu, Jing Zhu, Yating Wang, Wen Wang, Yingying Zhang, Hongyu Ma, Xiaochen Wang, Sheng Ye, Cheng Cheng   +13 more
wiley   +1 more source

A Naphthalimide‐Based NIR‐Emissive AIE Photosensitizer for Synergistic Apoptosis/Ferroptosis‐Mediated Antitumor Therapy and Broad‐Spectrum Bacterial Inactivation With Rapid Wound Healing

Advanced Healthcare Materials, EarlyView.
An ionic naphthalimide AIE photosensitizer (PS), TPAPV‐NIM‐M, anchors to cellular and bacterial membranes, emits in the far‐red/near‐infrared (NIR) region, and efficiently generates reactive oxygen species (ROS) under white light. Its membrane‐localized photodynamic action drives apoptosis/ferroptosis‐mediated tumor suppression and broad‐spectrum ...
Sayed Mir Sayed, Zeeshan Tahir, Fahri Alkan, Yavuz Nuri Ertas   +3 more
wiley   +1 more source