photoacid generator
Recently Published Documents


TOTAL DOCUMENTS

176
(FIVE YEARS 17)

H-INDEX

19
(FIVE YEARS 2)

2022 ◽  
pp. 2100868
Author(s):  
Yixuan Wang ◽  
Xingtian Hao ◽  
Haiyan Peng ◽  
Xingping Zhou ◽  
Xiaolin Xie

2021 ◽  
Author(s):  
Richard G. Jones ◽  
Christopher K. Ober ◽  
Teruaki Hayakawa ◽  
Christine K. Luscombe ◽  
Natalie Stingelin
Keyword(s):  

Author(s):  
Xi-Zhi Niu ◽  
Richard D. Pepel ◽  
Rodrigo Paniego ◽  
Jim A. Field ◽  
Jon Chorover ◽  
...  

2021 ◽  
Author(s):  
Anne-Déborah C. Nguindjel ◽  
Peter A. Korevaar

Out-of-equilibrium chemical systems, comprising reaction networks and molecular self-assembly pathways, rely on the delivery of reagents. Rather than via external flow, diffusion or convection, we aim at self-sustained reagent delivery. Therefore, we explore how the coupling of Marangoni flow with chemical reactions can generate self-sustained flows, driven by said chemical reactions, and – in turn – sustained by the delivery of reagents for this reaction. We combine a photoacid generator with a pH-responsive surfactant, such that local UV exposure decreases the pH, increases the surface tension and triggers the emergence of a Marangoni flow. We study the impact of reagent concentrations and identify threshold conditions at which flow can emerge. Surprisingly, we unraveled an antagonistic influence of the reagents on key features of the flow such as interfacial velocity and duration, and rationalize these findings via a kinetic model. Our study displays the potential of reaction-driven flow to establish autonomous control in fuel delivery of out-of-equilibrium systems.


2021 ◽  
Author(s):  
Anne-Déborah C. Nguindjel ◽  
Peter A. Korevaar

Out-of-equilibrium chemical systems, comprising reaction networks and molecular self-assembly pathways, rely on the delivery of reagents. Rather than via external flow, diffusion or convection, we aim at self-sustained reagent delivery. Therefore, we explore how the coupling of Marangoni flow with chemical reactions can generate self-sustained flows, driven by said chemical reactions, and – in turn – sustained by the delivery of reagents for this reaction. We combine a photoacid generator with a pH-responsive surfactant, such that local UV exposure decreases the pH, increases the surface tension and triggers the emergence of a Marangoni flow. We study the impact of reagent concentrations and identify threshold conditions at which flow can emerge. Surprisingly, we unraveled an antagonistic influence of the reagents on key features of the flow such as interfacial velocity and duration, and rationalize these findings via a kinetic model. Our study displays the potential of reaction-driven flow to establish autonomous control in fuel delivery of out-of-equilibrium systems.


2021 ◽  
Author(s):  
Zhiyuan Tian ◽  
Weier Bao ◽  
Ming Liu ◽  
Jiaqi Meng ◽  
Siyuan Liu ◽  
...  

Abstract We herein developed a core-shell type antitumor nanoagent based on the synergistically reinforced oxidative stress and calcium overload to mitochondria, both of which were triggered by near-infrared (NIR) light. The folic acid (FA) moiety decorated on MOF shells enabled efficient cellular uptake of nanoagents. The upconversion nanoparticle (UCNP) core converted NIR light to ultraviolet (UV) light with the latter catalyzed Fe3+-to-Fe2+ reduction and simultaneously activated the photoacid generator encapsulated in the cavities of MOFs, which enabled the release of free Fe2+ and photoacidification of intracellular microenvironment, respectively. The overexpressed H2O2 in the mitochondria, highly reactive Fe2+ and acidic milieu synergistically reinforced Fenton reactions for producing lethal hydroxyl radicals in mitochondria. Moreover, the photoacidification of plasma induced calcium influx, leading to calcium overload in the mitochondria. The therapeutic potency of the nanoagent based on the dual mitochondrial damage has been unequivocally confirmed in cell- and patient-derived tumor xenograft models in vivo.


2021 ◽  
Vol 59 (3) ◽  
pp. 162-167
Author(s):  
Jae Young Kim ◽  
Geonoh Choe ◽  
Tae Kyu An ◽  
Yong Jin Jeong

Solution-processed zinc tin oxide (ZTO) thin-film transistors (TFTs) have great potential uses in next-generation wearable and flexible electronic products. Zinc and tin precursor materials are naturally abundant and have low fabrication costs. To integrate a single ZTO TFT into logic circuits including inverters, NAND, and NOR gates will require the development of a facile patterning process to replace conventional and complicated photolithography techniques which are usually time-consuming and toxic. In this study, self-patterned ZTO thin films were prepared using a photo-patternable precursor solution including a photoacid generator, (4-methylthiophenyl)methyl phenyl sulfonium triflate. Solution-processed ZTO precursor films fabricated with the photoacid generator were successfully micropatterned by UV exposure, and transitioned to a semiconducting ZTO thin film by heat treatment. The UV-irradiated precursor films became insoluble in developing solvent as the generated proton from the photoacid generator affected the metal-containing ligand and changed the solubility of the metal oxide precursors. The resulting ZTO thin films were utilized as the active layers of n-type TFTs, which exhibited a typical n-type transfer, and output characteristics with appropriate threshold voltage, on/off current ratio, and field-effect mobility. We believe that our work provides a convenient solution-based route to the fabrication of metal-oxide semiconductor patterns.


2021 ◽  
Vol 59 (4) ◽  
pp. 340-352
Author(s):  
Gwang‐Sik Song ◽  
Youn‐Jung Heo ◽  
Jeong Ju Baek ◽  
Hyosun Lee ◽  
Geun Yeol Bae ◽  
...  
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document