Results 111 to 120 of about 40,631 (243)

Aktivierung von Metallkomplexen durch Ultraschallwellen für eine gezielte Krebstherapie

Angewandte Chemie, EarlyView.
Ultrasound enables non‐invasive activation of metal‐based therapeutics deep within tumors. Acoustic cavitation can drive sonodynamic reactive oxygen species generation or mechanochemical metal–ligand bond dissociation, enabling controlled release of bioactive payloads.
Félix Grosjean, Nicolás Montesdeoca, Gilles Berger, Johannes Karges   +3 more
wiley   +1 more source

Substrate‐Dependent Crosslinking by the Cytochrome P450 From Aminopyruvatide Biosynthesis

Angewandte Chemie, EarlyView.
Substitutions in the aminopyruvatide precursor peptide altered the C─C linkage formed from a YLY motif by the P450 ApyO to a N─C linkage in a WLY motif. Moreover, constitutional isomers crosslinked by C─C and C─O linkages were formed from YYY or YWY motifs. ABSTRACT Cytochrome P450s catalyze an array of reactions including crosslinking of aromatic side
Chandrashekhar Padhi, Dinh T. Nguyen, Lingyang Zhu, Lide Cha, Jesse W. Wald, Douglas A. Mitchell, Wilfred A. van der Donk   +6 more
wiley   +2 more sources

Phthalocyanines as materials for advanced technologies: some examples

, 2004
Metallophthalocyanine complexes and related compounds play an important role in many advanced applications and modem technologies mostly by virtue of their characteristic optical absorption and high chemical stability.
DINI, DANILO, Michael Hanack
core   +1 more source

Cobalt‐Catalyzed [2σ+2π] Cycloaddition via Site‐Selective Capture of Bicyclobutane Diradical

Angewandte Chemie, EarlyView.
We report a Co(II)‐catalyzed strategy that combines thermal activation of bicyclo[1.1.0]butane (BCBs) with site‐selective radical capture to furnish head‐to‐head fused bicyclo[2.1.1]hexanes via [2σ+2π] cycloaddition with indoles. Detailed mechanistic studies (31P NMR, EPR, CV, and DFT) support the catalytic pathway, while phosphine‐oxide trapping and X‐
Tanmayee Nanda, Alexander Umanzor, Julia Gartzke, Jeremy T. Maddigan‐Wyatt, Philipp Thielert, Stefan Weber, Sabine Richert, Shuming Chen, Daniel B. Werz   +8 more
wiley   +2 more sources

Axial Boron Coordination Reconstructs Stereostructure of Cu Single‐Atom Nanozymes for Efficient Water‐Phase Chemical Sensing

Angewandte Chemie, EarlyView.
Sun et al. proposed an axial boron coordination strategy to reconstruct the stereostructure of Cu SAzymes and enable them to serve as efficient laccase mimics for high‐throughput smart sensor array detection of phenolic pollutants in water phases. ABSTRACT Developing single‐atom nanozymes with stereoconfigurations is a new paradigm for biomimetic ...
Qijun Sun, Hongyu Shi, Si Liu, Ziping Li, Yu Yang, Fengwang Li, Wenli Wu, Qiongzheng Hu, Kang Liang   +8 more
wiley   +2 more sources

Porphyrin-based electrospun nanomaterials for life science applications

BBA Advances
Porphyrins are renowned for their utility in photocatalysis, electronics, sensors, solar cell dyes, and environmental remediation. However, their potential in life sciences applications remains underexplored, particularly in the context of encapsulation ...
Ana C. Mendes, Nuno M.M. Moura, M. Amparo F․ Faustino, M. Graça P.M.S. Neves, Ioannis S. Chronakis   +4 more
doaj   +1 more source

Perhalogenated porphyrins as a sink of excitation energy in porphyrin heterodimers

, 2002
The photophysics of a new family of free-base and zinc derivatives of meso- tetraphenylporphyrin heterodimers have been studied by UV-vis absorption, fluorescence and nanosecond flash photolysis techniques.
Latterini, L, Pastorini, A, Elisei, F, VENANZI, MARIANO, Kadish, K., Venanzi, M, Kadish, K, Mari, P, Tagliatesta, P, TAGLIATESTA, PIETRO   +9 more
core   +1 more source

Electrochemical and spectroelectrochemical properties of building blocks for molecular arrays: reactions of quinoxalino[2,3-b]porphyrins containing metal(II) ions

, 2005
Quinoxalino[2,3-b]porphyrins are laterally-extended porphyrins with aromatic ring systems fused to the beta,beta '-positions of a pyrrolic ring of the macrocycle.
E, W., Walton, R., Sheehan, C. S., Kadish, K. M., Burn, P. L., Crossley, M. J., Shao, J. G., Ou, Z. P.   +7 more
core   +1 more source

Metal-mediated self assembly of tetrapyridyl porphyrins by Na+ ions

, 2012
The formation of nanostructured, porphyrin-based films have widely attracted the interest due to their potential applications in sensing, optoelectronics and catalysis.1 Among porphyrins, meso-pyridyl derivatives are largely used as tectons in ...
Anna Borriello, Luigi Monsù Scolaro, Ilaria Occhiuto, Maria Rosaria Plutino, Mariachiara Trapani, Giuseppe Sabatino, Giovanna De Luca   +6 more
core  

Efficient Synthesis of Monoacyl Dipyrromethanes and Their Use in the Preparation of Sterically Unhindered trans-Porphyrins

, 2016
The condensation of an aldehyde with a dipyrromethane bearing a sterically unhindered aryl substituent at the 5-position typically results in low yield and a mixture of porphyrin products derived from acidolytic scrambling.
Polisetti Dharma Rao (2953062), Benjamin J. Littler (3026097), Jonathan S. Lindsey (1581841), G. Richard Geier (1599406)   +3 more
core   +1 more source