Finding methods that fight bacterial infection or contamination, while minimising our reliance on antibiotics is one of the most pressing needs of this century. Although the utilisation of UV-C light and strong oxidising agents, such as bleach, are still efficacious methods for eliminating bacterial surface contamination, both methods present severe health and/or environmental hazards. Materials with intrinsic photodynamic activity (i.e. a A c c e p t e d m a n u s c r i p t material's ability upon photoexcitation to convert molecular oxygen into reactive oxygen species such as singlet oxygen), which work with light within the visible photomagnetic spectrum could offer a significantly safer alternative. Here we present a new, bespoke molybdenum cluster (Bu4N)2[Mo6I8(n-C7F15COO)6], which is both efficient in the generation of singlet oxygen upon photoirradiation and compatible with the fluoropolymer (F23-L) known for its good oxygen permeability. Thus, (Bu4N)2[Mo6I8(n-C7F15COO)6]/F23-L mixtures have been solution-processed to give homogenous films of smooth and fibrous morphologies and which displayed high photoinduced antibacterial activity against four common pathogens under visible light irradiation. These materials thus have potential in applications ranging from antibacterial coatings to filtration membranes and air conditioners to prevent spread of bacterial infections.
We demonstrate a novel SAW device fabrication technique by mechanically clamping interdigital electrodes (IDEs) on the printed circuit board (PCB) to a LiNbO3 wafer. The novel PCB-SAW device is capable of performing all the functions of standard SAW devices.
A series of platinum(II) monoadducts and diadducts of the type [Pt II (mmap)LCl]NO 3 and [Pt II (mmap)L 2 ](NO 3 ) 2 (where mmap ¼ 1-methyl-4-(methylamino)piperidine and L ¼ adenine, 9-methylguanine, 7-methylguanine, cytosine, or uracil) have been synthesized and characterized by elemental analyses and by 1 H, 13 C, and 195 Pt nuclear magnetic resonance spectroscopy. Two adjacent corners of the platinum plane were occupied by the two amino nitrogens of 1-methyl-4-(methylamino)piperidine and the other two positions were occupied by the chloride and nitrogen atoms of the DNA base in monoadducts and two nitrogen atoms of DNA bases in diadducts.
Fullerene C60 end-capped polymers are synthesised using RAFT chain end functionality and Diels–Alder reaction with excellent yield and composition control.
This paper describes the design, development and successful use of an on-chip goniometer for room-temperature macromolecular crystallography via acoustically induced rotations. We present for the first time a low cost, rate-tunable, acoustic actuator for gradual in-fluid sample reorientation about varying axes and its utilisation for protein structure determination on a synchrotron beamline. The device enables the efficient collection of diffraction data via a rotation method from a sample within a surface confined droplet. This method facilitates efficient macromolecular structural data acquisition in fluid environments for dynamical studies.
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