Results 71 to 80 of about 175,207 (387)

Modifications of Porphyrins and Hydroporphyrins for Their Solubilization in Aqueous Media

Molecules, 2017
The increasing popularity of porphyrins and hydroporphyrins for use in a variety of biomedical (photodynamic therapy, fluorescence tagging and imaging, photoacoustic imaging) and technical (chemosensing, catalysis, light harvesting) applications is also ...
Michael P Luciano, C. Brückner
semanticscholar   +1 more source

meso-Porphyrinyl-Substituted Porphyrin and Expanded Porphyrins [PDF]

Organic Letters, 2004
[structure: see text] A series of meso-porphyrinyl-substituted expanded porphyrins were prepared from the 1:1 acid-catalyzed condensation reaction of 4-porphyrinyl-2,3,5,6-tetrafluorobenzaldehyde and pyrrole.
Yasuhide Inokuma and, Atsuhiro Osuka
openaire   +4 more sources

Flexibility and Dynamicity Enhances and Controls Supramolecular Self‐Assembly of Zinc(II) Metallogels

Advanced Functional Materials, EarlyView.
Zinc(II) coordination complexes with tunable aryloxy‐imine ligands exhibit controllable supramolecular self‐assembly into hierarchical fibrous structures. Coordination‐driven stacking, not π–π interactions, enables gelation, dynamic assembly/disassembly, and enhanced nanomechanical properties.
Merlin R. Stühler, Hesam Makki, Dorothee Silbernagl, Mathias Dimde, Kai Ludwig, Bengt E. Tegner, Christopher Greve, Konstantin Rausch, Eva M. Herzig, Anna Köhler, Alex J. Plajer   +10 more
wiley   +1 more source

Synthesis and properties of cationic derivaties of meso-tetra(4-pyridyl)porphyrin

Тонкие химические технологии, 2009
Synthesis of amphyphilic cationic meso-pyridilsubstituted porphyrins bearing long chain alkyl groups is described. An improved methods of preparation of tetra- and mono-alkylsubstituted meso-pyridil porphyrins are proposed.
N. V. Novikov, V. V. Starkov, K. A. Formirovskiy, N. A. Bragina, I. P. Ushakova, A. F. Mironov   +5 more
doaj  

Structure of the Mg-Chelatase Cofactor GUN4 Reveals a Novel Hand-Shaped Fold for Porphyrin Binding [PDF]

, 2005
In plants, the accumulation of the chlorophyll precursor Mg-protoporphyrin IX (Mg-Proto) in the plastid regulates the expression of a number of nuclear genes with functions related to photosynthesis.
Anholt, Anholt, Brunger, Butow, Chen, Cornah, D'Andrea, Hirsch, Holm, Jean-Luc Ferrer, Jeffrey Dangl, Jensen, Jez, Joanne Chory, Johanningmeier, Jones, Jones, Joseph P Noel, Kaneko, Karger, Keller, Kessel, Kraulis, Kropat, Kropat, La Rocca, Larkin, Laskowski, Lecerof, Mark A Verdecia, Mochizuki, Nicholls, Ogawa, Oster, Otwinowski, Papadopoulos, Perrin, Pettersen, Qi, Richly, Robert M Larkin, Rodermel, Rodermel, Roland Riek, Schleiff, Sigfridsson, Strand Å, Asami, Susek, Terwilliger, Terwilliger, Terwilliger, Thomas, Verma, Wendler, Whyte, Wilde, Willows, Willows, Yaffe, Yeliseev, Yeliseev, Zeng, Zhang, Zhang   +63 more
core   +3 more sources

Experimentally Validated Design Principles of D‐Block Transition Metal Single‐Atom Non‐Dissociative Chemisorption Solid‐State Hydrogen Storage Materials

Advanced Functional Materials, EarlyView.
A novel descriptor and a bottom‐up design principle are established to enable the rational design of hydrogen storage materials based on d‐block transition metal single‐atom COFs. By modulating H₂ adsorption through d‐orbital tuning, this approach achieves both high storage capacity and fast kinetics, while revealing a volcano‐type relationship between
Qiuyan Yue, Chao Li, Yong Gao, Zhenglong Li, Wen‐Gang Cui, Xinqiang Wang, Guoquan Na, Xiaowei Wang, Yiyang Wan, Mingchang Zhang, Yanxia Liu, Fulai Qi, Chenchen Li, Xu Xue, Jian Miao, Jing Zhang, Xiao Han, Pan Wang, Chang Guo, Xiacui Liu, Mingxia Gao, Wenping Sun, Jian Chen, Zhenhai Xia, Hongge Pan   +24 more
wiley   +1 more source

Conformational control of nonplanar free base porphyrins: towards bifunctional catalysts of tunable basicity.

Chemical Communications, 2017
For the first time, free base and N-methylated porphyrins have been utilized as bifunctional organocatalysts in Michael additions and it was found that distortion of the macrocycle is a vital prerequisite for their catalytic activity.
Marie Roucan, M. Kielmann, S. Connon, Stefan S. R. Bernhard, Mathias O. Senge   +4 more
semanticscholar   +1 more source

A Route to Surface-bound Metalloporphyrins as Models for Oxygen Reduction Catalysts [PDF]

, 2017
The attachment nonmetal and magnesium ethynyl terminated porphyrin (TEPP and MgTEPP) to glassy carbon electrode was achieved through voltammetry. These attached porphyrins were studied by cyclic voltammetry (CV) and UV-visible spectroscopy. Surface-bound
Van Wyck, Stephen J
core   +1 more source

Porphyrias associated with malignant tumors: Results of treatment with ionizing irradiation [PDF]

, 2001
Background: Porphyrin metabolism disorders, known as porphyria, represent inherited or acquired diseases. The development of porphyria due to light sensibility occurs especially with exposure to wavelengths in the range of 300-700 nm.
Dühmke, Eckhart, Panzer, M., Schaffer, Moshe, Schaffer, Pamela Manuela, Wilkowski, R.   +4 more
core   +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