The steady-state fluorescence anisotropy of 5-methylindole is shown to depend on both excitation and emission wavelengths, at room temperature in glycerol. A simulation is presented that shows that this emission wavelength dependence of the anisotropy can be explained in terms of dual emission from both the La and the Lb transition moments of the indole ring. For such dual emission to occur, the lowest excited-state energy level of both of these oscillators must be very similar.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/BF01881884 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Unlocking advanced thermometric capabilities: BiVO: Er/Yb nanophosphors with dual-mode up-conversion and down-shifting features.
RSC Adv
January 2025
Department of Condensed Matter Physics, GdS Optronlab, LUCIA Building, University of Valladolid Paseo de Belén 19 47011 Valladolid Spain.
Luminescent materials doped with rare-earth (RE) ions have emerged as powerful tools in thermometry, offering high sensitivity and accuracy. However, challenges remain, particularly in maintaining efficient luminescence at elevated temperatures. This study investigates the thermometric properties of BiVO: Yb/Er (BVO: Er/Yb) nanophosphors synthesized the sol-gel method.
View Article and Find Full Text PDFI-β-Methyl Iodophenyl Pentadecanoic Acid and Thallium Dual Myocardial Single-Photon Emission Computed Tomography (BMIPP/Tl SPECT) Detects Coronary Microvascular Dysfunction in a Patient With Antiphospholipid Syndrome Nephropathy.
Circ J
January 2025
Department of Radioisotope Medicine, Atomic Bomb Disease and Hibakusha Medicine Unit, Atomic Bomb Disease Institute, Nagasaki University.
Dual-mode ratiometric optical sensor for rapid visual detection of Hg with poly(adenine)-assisted silver nanoclusters anchoring on tetrahedral DNA framework.
Mikrochim Acta
January 2025
College of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, 643000, P.R. China.
Cytosine-rich and poly(adenine)-tailed tetrahedral DNA framework (TDF) is designed as template (A-TDF) for anchoring silver nanoclusters (AgNCs) and igniting the dual-color fluorescence of AgNCs. The resultant DNA-AgNCs simultaneously emits red and green fluorescence, and the quantum yield of red fluorescence is as high as 44.8%.
View Article and Find Full Text PDFSimultaneous measurement of liquid level and R.I. sensor using POF based on twisted structure.
Sci Rep
January 2025
School of Microelectronics and Communication Engineering, Chongqing University, Chongqing, 400044, China.
In this paper, a dual-parameter liquid level and refractive index (R.I.) sensor is fabricated using three pieces of bare polymer optical fibers (POFs), which can independently and simultaneously sense the liquid level and R.
View Article and Find Full Text PDFAcceptor engineering of quinone-based cycloparaphenylenes via post-synthesis for achieving white-light emission in single-molecule.
Nat Commun
January 2025
College of Chemistry, Beijing Normal University, Beijing, 100875, P.R. China.
Developing donor-acceptor [n]cycloparaphenylenes (D-A [n]CPPs) with multiple emissions from different emissive states remains challenging yet crucial for achieving white-light emission in single-molecule. Here, we report our explorations into acceptor engineering of quinone-based D-A [10]CPPs (Nq/Aq/Tq[10]CPPs) via a post-lateral annulation using Diels-Alder reactions of oxTh[10]CPP. X-ray analysis reveals that Nq[10]CPP displays a side by side packing via naphthoquione stacking while Aq[10]CPP adopts an intercalated conformation through anthraquinone interaction.
View Article and Find Full Text PDFWant 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!