Molecule-based functional devices on surfaces may take advantage of bistable molecular switches. The conformational dynamics and efficiency of switches are radically different on surfaces compared to the liquid phase. We present a design of molecular layers which enables bistable switching on a surface and, for the first time, demonstrate control of a single switch in a dense and ordered array at the spatial limit. Up and down motion of a central Sn ion through the frame of a phthalocyanine molecule is achieved via resonant electron or hole injection into molecular orbitals.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/ja807876c | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Strong electronic interaction enhanced electrocatalysis of copper phthalocyanine decorated Co-MOF-74 toward highly efficient oxygen evolution reaction.
RSC Adv
December 2024
State Key Laboratory of Applied Organic Chemistry, Laboratory of Special Function Materials and Structure Design of the Ministry of Education, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 China.
Metal-organic frameworks (MOFs) have been identified as promising electrocatalysts for the oxygen evolution reaction (OER). However, most of the reported MOFs have low electrical conductivity and poor stability, and therefore addressing these problems is crucial for achieving higher electrocatalytic performance. Meanwhile, direct observations of the electrocatalytic behavior, which is of great significance to the understanding of the electrocatalytic mechanism, remain highly challenging.
View Article and Find Full Text PDFA fluorescent signal amplification strategy via host-guest recognition for cortisol detection.
Spectrochim Acta A Mol Biomol Spectrosc
December 2024
School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, Guangdong 518060, PR China.
Psychological stress is a major contributor to individual health disparities. Accurate and quantitative detection of stress markers is crucial preventing mental health related problems. Supramolecular chemistry is widely used in drug delivery, catalysis, sensors and other applications.
View Article and Find Full Text PDFInvestigation on Tattoo Ink (Hexadecachlorinate Copper Phthalocyanine) Removal: Novel Chemical and Biological Approach.
Molecules
November 2024
Department of Biosciences and Territory, University of Molise, c.da Fonte Lappone snc, 86090 Pesche, Italy.
Tattoos have been a ubiquitous phenomenon throughout history. Now, the demand for tattoo removal for aesthetic or practical reasons is growing rapidly. This study outlines the results of field investigations into the chemical and biological removal of tattoo inks (Hexadecachlorinate copper phthalocyanine-CClCuN-CAS no° 1328-53-6).
View Article and Find Full Text PDFSpin-state switching of indium-phthalocyanine on Pb(100).
RSC Adv
December 2024
Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel D-24098 Kiel Germany
Indium(iii) phthalocyanine chloride deposited on Pb(100) is studied by scanning tunnelling spectroscopy at cryogenic temperatures. The Cl ions are dissociated and the remaining indium phthalocyanine (InPc) is observed in two states with the metal ion pointing to (↓) or away (↑) from the substrate. Isolated molecules and islands with a superstructure and a unit cell of four inequivalent molecules, namely one InPc↑ and three InPc↓ in different sites, are observed.
View Article and Find Full Text PDFPhotoluminescence emission and Raman enhancement in TERS: an experimental and analytic revisiting.
Nanophotonics
March 2024
Institute of Physical and Theoretical Chemistry, Eberhard Karls University of Tübingen, 72076 Tübingen, Germany.
Article Synopsis
- The study presents an analytic model that improves the understanding of Raman and fluorescence enhancement in molecules situated between two closely spaced gold nanospheres, taking into account higher-order modes along with the traditional dipolar mode.
- The model is validated by gap-dependent tip-enhanced Raman spectroscopy (TERS) experiments, which reveal varying trends of photoluminescence and Raman enhancement as the gap width decreases.
- A red-shift in the background spectra indicates greater coupling between the nanospheres, demonstrating how the model effectively explains the mechanisms at play in the TERS experimental observations.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!