Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Sarah L. Walden"'
Autor:
Sarah L. Walden, Phuong H. D. Nguyen, Hao-Kai Li, Xiaogang Liu, Minh T. N. Le, Loh Xian Jun, Christopher Barner-Kowollik, Vinh X. Truong
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-13 (2023)
Abstract Thioindigos are visible light responsive photoswitches with excellent spatial control over the conformational change between their trans- and cis- isomers. However, they possess limited solubility in all conventional organic solvents and pol
Externí odkaz:
https://doaj.org/article/baf5ebcc23e647c4953a705de9e15662
Publikováno v:
Advanced Science, Vol 11, Iss 3, Pp n/a-n/a (2024)
Abstract Over the last years, the authors' laboratory has employed monochromatic tuneable laser systems to reveal a fundamental mismatch between the absorptivity of a chromophore and its photochemical reactivity for the vast majority of covalent bond
Externí odkaz:
https://doaj.org/article/7f392346280546b3b81fed64d3bc7253
Autor:
Sarah L. Walden, Leona L. Rodrigues, Jessica Alves, James P. Blinco, Vinh X. Truong, Christopher Barner-Kowollik
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-8 (2022)
Dual-wavelength photochemical systems open up new avenues for novel lithographic techniques but currently only few wavelength-orthogonal photoreactive compounds undergoing reversible photoreaction are known. Here, the authors exploit cis/trans photoi
Externí odkaz:
https://doaj.org/article/e8580794daa44854b16c8769d349bd1c
Autor:
Daniel Kodura, Leona L. Rodrigues, Sarah L. Walden, Anja S. Goldmann, Hendrik Frisch, Christopher Barner-Kowollik
Publikováno v:
Journal of the American Chemical Society. 144:6343-6348
We introduce a new photochemically active compound, i.e., pyridinepyrene (PyPy), entailing a pH-active moiety that effects a significant halochromic shift into orange-light (λ = 590 nm) activatable photoreactivity while concomitantly exerting contro
Autor:
Philipp Neidinger, Joshua Davis, Dominik Voll, Esa A. Jaatinen, Sarah L. Walden, Andreas N. Unterreiner, Christopher Barner‐Kowollik
Publikováno v:
Angewandte Chemie. 134
Energy Transmission of Vortex Beams Through 3rd Order Intensity Dependent Nonlinear Optical Limiters
Publikováno v:
IEEE Journal of Quantum Electronics. 57:1-7
Third order optical limiting utilizes nonlinear absorption or scatter to preferentially reduce the optical throughput of intense light through a medium. While these processes are dependent on intensity, it is often the transmitted energy or power tha
Publikováno v:
The Journal of organic chemistry. 87(14)
We herein report the first light-driven selective monoderivatization (desymmetrization) of two chemically equivalent carbonyl groups in a single chromophore. By comparing of four symmetric regioisomers, featuring two equivalent
Publikováno v:
ACS macro letters. 10(7)
Herein, we establish the effect of intensity and wavelength on the size of microparticles formed via precipitation polymerization, employing photocrosslinkable prepolymers. Simultaneous measurement of backscattered laser irradiation enabled real-time
Autor:
Florian Feist, Christopher Barner-Kowollik, Susanna V. Kunz, Tanja Weil, John C. McMurtrie, James P. Blinco, Jessica Alves, Sarah L. Walden, Aidan J. Brock, Aaron S. Micallef
Publikováno v:
Angewandte Chemie International Edition
Autor:
Ishrath M. Irshadeen, Aaron S. Micallef, Christopher Barner-Kowollik, Sarah L. Walden, Kevin De Bruycker, Hendrik Frisch
Publikováno v:
Polymer Chemistry. 12:4903-4909
Herein we introduce a photoreactive chalcone moiety that can be synthesized at a scale of several grams with ease, and efficiently undergoes a [2 + 2] photocycloaddition with light up to just below 500 nm as determined by an action plot. The peak cha