scholarly journals Intervalence charge transfer transition in mixed valence complexes synthesised from RuIII(edta)- and FeII(CN)5-cores

2002 ◽  
Vol 114 (4) ◽  
pp. 431-442 ◽  
Author(s):  
H. C. Bajaj ◽  
Atindra D. Shukla ◽  
Amitavaitava Das
Author(s):  
Lisa N Silverman ◽  
Pakorn Kanchanawong ◽  
Thomas P Treynor ◽  
Steven G Boxer

Many mixed-valence systems involve two or more states with different electric dipole moments whose magnitudes depend upon the charge transfer distance and the degree of delocalization; these systems can be interconverted by excitation of an intervalence charge transfer transition. Stark spectroscopy involves the interaction between the change in dipole moment of a transition and an electric field, so the Stark spectra of mixed-valence systems are expected to provide quantitative information on the degree of delocalization. In limiting cases, a classical Stark analysis can be used, but in intermediate cases the analysis is much more complex because the field affects not only the band position but also the intrinsic bandshape. Such non-classical Stark effects lead to widely different bandshapes. Several examples of both classes are discussed. Because electric fields are applied to immobilized samples, complications arise from inhomogeneous broadening, along with other effects that limit our ability to extract unique parameters in some cases. In the case of the radical cation of the special pair in photosynthetic reaction centres, where the mixed-valence system is in a very complex but structurally well-defined environment, a detailed analysis can be performed.


2015 ◽  
Vol 17 (30) ◽  
pp. 19874-19884 ◽  
Author(s):  
Zoila Barandiarán ◽  
Andries Meijerink ◽  
Luis Seijo

Configuration coordinate diagrams, which are normally used in a qualitative manner for the energy levels of active centers in phosphors, are quantitatively obtained here for intervalence charge transfer (IVCT) states of mixed valence pairs and metal-to-metal charge transfer (MMCT) states of heteronuclear pairs, in solid hosts.


2011 ◽  
Vol 50 (7) ◽  
pp. 2708-2710 ◽  
Author(s):  
Takashi Okubo ◽  
Hiroyasu Kuwamoto ◽  
Kyung Ho Kim ◽  
Shinya Hayami ◽  
Akihito Yamano ◽  
...  

2020 ◽  
Vol 11 (20) ◽  
pp. 5213-5220
Author(s):  
Patrick W. Doheny ◽  
Jack K. Clegg ◽  
Floriana Tuna ◽  
David Collison ◽  
Cameron J. Kepert ◽  
...  

Gaining a fundamental understanding of charge transfer mechanisms in three-dimensional Metal–Organic Frameworks (MOFs) is crucial to the development of electroactive and conductive porous materials.


1999 ◽  
Vol 38 (3) ◽  
pp. 606-612 ◽  
Author(s):  
Brian W. Pfennig ◽  
Jamie L. Cohen ◽  
Irene Sosnowski ◽  
Nathan M. Novotny ◽  
Douglas M. Ho

2007 ◽  
Vol 2007 (23) ◽  
pp. 3695-3700 ◽  
Author(s):  
Senjuti De ◽  
Shubhamoy Chowdhury ◽  
Jnan P. Naskar ◽  
Michael G. B. Drew ◽  
Rodolphe Clérac ◽  
...  

2017 ◽  
Vol 53 (21) ◽  
pp. 3030-3033 ◽  
Author(s):  
Yi Yang Wu ◽  
Miao Meng ◽  
Gang Yi Wang ◽  
Pengju Feng ◽  
Chun Y. Liu

A transition of mixed-valence systems from Class II to Class III crossing the Class II–III borderline is achieved by four thienylene-bridged Mo2 dimers, and is probed using spectral parameters of intervalence charge transfer absorption (band energy, intensity and shape). This study offers fresh and detailed observations of optical behaviors of MV compounds in different regimes.


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