Design Strategies for Ratiometric Chemosensors: Modulation of Excitation Energy Transfer at the Energy Donor Site

Download
2009-07-01
Guliyev, Ruslan
Coskun, Ali
AKKAYA, Engin Umut
Excitation energy transfer, when coupled to an ion-modulated ICT chromophore, creates novel opportunities in sensing. The direction of energy transfer and the point of ICT modulation can be varied as desired. In our previous work, we have shown that energy transfer efficiency between two energetically coupled fluorophores will be altered by the metal ion binding to the ICT chromophore carrying a ligand. There are two beneficial results: increased pseudo-Stokes shift and expanded dynamic range. Here, we explored the consequences of the modulation of energy transfer efficiency at the energy donor site, in a molecular design which has an ICT type metal ion-sensitive chromophore placed as the energy donor in the dyad. Clear advantages emerge compared to the acceptor site modulation: unaltered emission wavelength in the red end of the visible spectrum, while keeping a large Stokes shift and the ratiometric character.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Suggestions

Design of a Novel THz Sensor for Structural Health Monitoring Applications
Pavia, J. P.; Ribeiro, M. A.; Sarikaya, C. K.; Akbar, D.; Altan, Hakan; Souto, N. (2019-01-01)
In this paper, we propose a study on the characterization, design and simulation of a THz sensor for applications in Structural Health Monitoring (SHM). The proposed sensor is assembled using two frequency selective surfaces (FSSs) based on metamaterial wire resonators. We present a theoretical model to describe its electromagnetics which is used not only to understand the physical principles underlying the functioning of the sensor but also to determine a set of optimized parameters for its operation in th...
Wearable battery-less wireless sensor network with electromagnetic energy harvesting system
Chamanian, Salar; Ulusan, Hasan; Zorlu, Ozge; Baghaee, Sajjad; Uysal, Elif; Külah, Haluk (2016-10-01)
This paper presents a battery-less wireless sensor network (WSN) equipped with electromagnetic (EM) energy harvesters and sensor nodes with adjustable time-interval based on stored the energy. A wearable EM energy harvesting system is developed and optimized to power-up a typical wireless sensor mote from body motion. This is realized through characterization of the body motion and design of a compact EM energy harvester according to vibration frequencies generated during human running and walking. The harv...
Empirical Proof of Concept for TE Generation in Mobile Computers
Denker, Reha; Muhtaroglu, Ali; Külah, Haluk (2012-12-05)
Thermoelectric (TE) module integration into a mobile computer has been experimentally investigated in this paper for its energy harvesting opportunities. For this purpose, a detailed Finite Element Analysis (FEA) model was constructed for thermal simulations. The model outputs were then correlated with the thermal validation results of the target system. A suitable "warm spot" has been selected, based on the FEA model, to integrate a commercial TE micro-module inside the system with minimum or no notable im...
Structural properties of ZnO binary alloy nanosystems: molecular-dynamics simulations
Kılıç, Mehmet Emin; Erkoç, Şakir; Department of Physics (2015)
ZnO nanostructures revealed novel implementations in optoelectronics, sensors, transducers and biomedical sciences. There are different shapes of ZnO nanostructures such as zero dimensional-0D (quantum dots, nanoparticles), one dimensional-1D (nanorods, nanowires, nanotubes) and two dimensional-2D (nanosheets) and their properties have been experimentally prepared and investigated. Thus, ZnO is one of the richest family of nanostructures among all materials, both in structures and in properties. In this the...
Optical design of TCO-free interconnecting layer for all-perovskite tandem solar cells
Koc, Mehmet; Ameri, Mohsen; Yerci, Selçuk (2021-07-12)
Organic-inorganic hybrid perovskite materials are excellent candidates as light absorbers in tandem solar cells with advantages of tunable bandgaps, high absorption coefficients, and facile and low-cost fabrication processes. As the key component of a tandem structure, the interconnecting layer (ICL) requires optical transparency, efficient carrier recombination, and facile up-scalability. To demonstrate the feasibility of an efficient TCO-free ICL in all-perovskite tandem solar cell devices, we have perfor...
Citation Formats
R. Guliyev, A. Coskun, and E. U. AKKAYA, “Design Strategies for Ratiometric Chemosensors: Modulation of Excitation Energy Transfer at the Energy Donor Site,” JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, pp. 9007–9013, 2009, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/66759.