molecules-logo

Journal Browser

Journal Browser

Stimuli-Responsive Chromophores and Luminophores—Second Volume

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Colorants".

Deadline for manuscript submissions: closed (31 October 2024) | Viewed by 916

Special Issue Editor


E-Mail Website
Guest Editor
Department of Agriculture, University of Napoli Federico II, 80138 Napoli, Italy
Interests: dye-sensitized solar cells (DSSC); organic semiconductors; organic fluorescent molecules; metallo-organic fluorescent materials; crystal engineering; crystal structures; optical materials; second-order NLO molecules; dyes and pigments; flurophore/chromophore probes; chemosensor; solid-state emitters; fluorescent dyes
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Stimuli-responsive materials can alter their physicochemical properties and/or structural conformations in response to specific stimuli. The basic design characteristics of stimuli-responsive materials synchronize across the wide range of potential applications and challenges to be addressed in this rapidly expanding area.

External stimuli such as pH, temperature, light, solvent, gas, redox agents, mechanical force, electric and magnetic fields can be the object of targeted detection. Novel photoelectric devices are based on stimuli-responsive materials, such as self-adaptive adjustment devices, smart detection probes, information storage systems, energy-saving, camouflage and anticounterfeiting displays. On the other hand, the stimuli can be internal, such as physiological or pathological variations in the cells and tissues, gaining interest in biomedical applications for tissue engineering and drug delivery, and as therapeutic and theranostic instruments.

In all cases, chromophores and luminophores acting as probes for a targeted optical response are easy, effective, and widely applicable instruments for nanotechnology, biochemistry, organic and physical chemistry, and materials science. The present Special Issue has the purpose of collecting selected state-of-the-art examples of optical-activated sensing probes and systems. Articles exploring the reaction mechanism and design principle, discussing the synthetic strategies to prepare stimuli-responsive optical materials and devices are welcome.

Prof. Dr. Barbara Panunzi
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • stimuli-responsive
  • chromophore
  • luminophore
  • photochemical
  • optical

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

Further information on MDPI's Special Issue polices can be found here.

Related Special Issue

Published Papers (1 paper)

Order results
Result details
Select all
Export citation of selected articles as:

Research

18 pages, 5234 KiB  
Article
High Fluorescence of Phytochromes Does Not Require Chromophore Protonation
by Sagie Katz, Hoang Trong Phan, Fabian Rieder, Franziska Seifert, Markus Pietzsch, Jan Laufer, Franz-Josef Schmitt and Peter Hildebrandt
Molecules 2024, 29(20), 4948; https://doi.org/10.3390/molecules29204948 - 19 Oct 2024
Viewed by 637
Abstract
Fluorescing proteins emitting in the near-infrared region are of high importance in various fields of biomedicine and applied life sciences. Promising candidates are phytochromes that can be engineered to a small size and genetically attached to a target system for in vivo monitoring. [...] Read more.
Fluorescing proteins emitting in the near-infrared region are of high importance in various fields of biomedicine and applied life sciences. Promising candidates are phytochromes that can be engineered to a small size and genetically attached to a target system for in vivo monitoring. Here, we have investigated two of these minimal single-domain phytochromes, miRFP670nano3 and miRFP718nano, aiming at a better understanding of the structural parameters that control the fluorescence properties of the covalently bound biliverdin (BV) chromophore. On the basis of resonance Raman and time-resolved fluorescence spectroscopy, it is shown that in both proteins, BV is deprotonated at one of the inner pyrrole rings (B or C). This protonation pattern, which is unusual for tetrapyrroles in proteins, implies an equilibrium between a B- and C-protonated tautomer. The dynamics of the equilibrium are slow compared to the fluorescence lifetime in miRFP670nano3 but much faster in miRFP718nano, both in the ground and excited states. The different rates of proton exchange are most likely due to the different structural dynamics of the more rigid and more flexible chromophore in miRFP670nano3 and miRFP718nano, respectively. We suggest that these structural properties account for the quite different fluorescent quantum yields of both proteins. Full article
(This article belongs to the Special Issue Stimuli-Responsive Chromophores and Luminophores—Second Volume)
Show Figures

Graphical abstract

Back to TopTop