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Switched "On" Transient Fluorescence Output from a Pulsed-Fuel Molecular Ratchet.
J Am Chem Soc
December 2023
Department of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K.
We report the synthesis and operation of a molecular energy ratchet that transports a crown ether from solution onto a thread, along the axle, over a fluorophore, and off the other end of the thread back into bulk solution, all in response to a single pulse of a chemical fuel (CClCOH). The fluorophore is a pyrene residue whose fluorescence is normally prevented by photoinduced electron transfer (PET) to a nearby -methyltriazolium group. However, crown ether binding to the -methyltriazolium site inhibits the PET, switching on pyrene fluorescence under UV irradiation.
View Article and Find Full Text PDFA tape-reading molecular ratchet.
Nature
December 2022
Department of Chemistry, University of Manchester, Manchester, UK.
Article Synopsis
- Cells act like Turing machines, processing data from molecular tapes into outputs, and recent advancements have focused on synthetic small-molecule machines that can interact with these tapes.
- This study introduces a molecular ratchet using a crown ether as a reading head that moves along an encoded molecular strand, reading stereochemical information in a non-destructive manner through observable changes in circular dichroism.
- The molecular ratchet operates as a finite-state automaton, enabling the directional reading—and potentially writing—of information through the movement of artificial nanomachines along molecular tapes.
A median sternotomy is often performed in patients with gastric tube cancer reconstructed through the retrosternal route; however, this procedure is invasive and has the risk of severe infectious complications. To overcome these problems, we created a novel method to perform the reconstructed gastric tube resection using a gastric tube inversion technique combined with a laparoscopic mediastinal approach. After the duodenum was divided, the oral side of the cut end was sutured with silken threads for traction.
View Article and Find Full Text PDFDelivering resilience training to pre-registration student nurses in partnership with a reservist military organisation: A qualitative study.
Nurse Educ Today
February 2021
School of Health Sciences, University of Dundee, United Kingdom of Great Britain and Northern Ireland. Electronic address:
Background: Nurses need resilience to safeguard their well-being. In collaboration with a military reservist organisation the Team Series was designed to foster resilience by promoting teamwork and leadership skills in student nurses.
Objectives: To explore participants' experiences of engaging with the Team Series and the skills and knowledge acquired.
Suture tape augmentation of the lateral ulnar collateral ligament increases load to failure in simulated posterolateral rotatory instability.
Knee Surg Sports Traumatol Arthrosc
January 2021
Department of Orthopedic Surgery, Medical School Hannover, DIAKOVERE Annastift, Anna-von-Borries-Straße 1-7, 30625, Hannover, Germany.
Purpose: Simple elbow dislocations are accompanied with lateral ulnar collateral ligament ruptures. For persisting instability, surgery is indicated to prevent chronic posterolateral rotatory instability. After lateral collateral ligament (LCL) complex repair the repair is protected by temporary immobilization, limited range of motion and hinged bracing.
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