UV-vis/X-ray/thermo-induced synthesis and UV–SWIR photoresponsive property of a mixed-valence viologen molybdate semiconductor

2021 ◽  
Author(s):  
Peng-Hao Wang ◽  
Cao-Ming Yu ◽  
Xiao-Qing Yu ◽  
Ming-Sheng Wang ◽  
Guo-Cong Guo
Keyword(s):  
Charge Transfer ◽  
Radical Cation ◽  
Near Infrared ◽  
Mixed Valence ◽  
Design Strategy ◽  
X Ray ◽  
Intervalence Charge Transfer

A new design strategy through synergy of Mo (VI)–Mo (V) intervalence charge transfer and π(radical)–π(radical/cation) interactions is proposed to obtain semiconductors with photoresponsive ranges covering the whole UV–SWIR (ultraviolet–shortwave near-infrared;...

scholarly journals Configuration coordinate energy level diagrams of intervalence and metal-to-metal charge transfer states of dopant pairs in solids

2015 ◽  
Vol 17 (30) ◽  
pp. 19874-19884 ◽  
Author(s):  
Zoila Barandiarán ◽  
Andries Meijerink ◽  
Luis Seijo
Keyword(s):  
Charge Transfer ◽  
Energy Level ◽  
Energy Levels ◽  
Mixed Valence ◽  
Active Centers ◽  
Metal Charge ◽  
Intervalence Charge Transfer ◽  
Metal Charge Transfer ◽  
Configuration Coordinate

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.

Photochemical Nitration by Tetranitromethane. XVII. The Regiochemistry of Adduct Formation in the Photochemical Reaction of 1-Methylnaphthalene and Tetranitromethane

1994 ◽  
Vol 47 (8) ◽  
pp. 1591 ◽  
Author(s):  
JL Calvert ◽  
L Eberson ◽  
MP Hartshorn ◽  
n Maclaga ◽  
WT Robinson
Keyword(s):  
Crystal Structure ◽  
Charge Transfer ◽  
Radical Cation ◽  
Photochemical Reaction ◽  
Charge Transfer Complex ◽  
Adduct Formation ◽  
X Ray ◽  
Analogous Manner ◽  
Structure Determinations ◽  
Ion Recombination

Photolysis of the 1-methylnaphthalene/tetranitromethane charge-transfer complex yields the triad of 1-methylnaphthalene radical cation, nitrogen dioxide and trinitromethanide ion. Recombination of this triad gives predominantly 4-methyl-t-2-nitro-r-1-trinitromethyl-1,2- dihydronaphthalene (1), the epimeric 1-methyl-1-nitro-4-trinitromethyl-1,4-dihydronaphtha-lenes (2) and (3), 8-methyl-c-4-trinitromethyl-1,4-dihydronaphthalen-r-l-ol (4), nitro cyclo -adduct (5), 8-methyl-c-4-trinitromethyl-1,4-dihydronaphthalen-r-l-ol (6), hydroxy cyclo-adduct (7) and 4-methyl-t-1-trinitromethyl-1,2-dihydronaphthalen-r-2-ol (8). Adducts (1)- (3), (5), (7) and (8) are formed by attack of the trinitromethanide ion at C4 of the 1-methylnaphthalene radical cation, while adducts (4) and (6) are formed by corresponding attack at C5. Adduct (1) undergoes thermal cycloaddition to give the nitro cycloadduct (5) and it is assumed that the hydroxy cycloadduct (7) is formed in analogous manner from 4-methyl-t-1-trinitromethyl-1,2-dihydronaphthalen-r-2-ol (8). X-Ray crystal structure determinations are reported for adducts (1), (3)-(5) and (7).

Intervalence Charge-Transfer System by 1D Assembly of New Mixed-Valence Octanuclear CuI/CuII/CuIIICluster Units

2011 ◽  
Vol 50 (7) ◽  
pp. 2708-2710 ◽  
Author(s):  
Takashi Okubo ◽  
Hiroyasu Kuwamoto ◽  
Kyung Ho Kim ◽  
Shinya Hayami ◽  
Akihito Yamano ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Mixed Valence ◽  
Transfer System ◽  
Intervalence Charge Transfer

scholarly journals Quantification of the mixed-valence and intervalence charge transfer properties of a cofacial metal–organic framework via single crystal electronic absorption spectroscopy

2020 ◽  
Vol 11 (20) ◽  
pp. 5213-5220
Author(s):  
Patrick W. Doheny ◽  
Jack K. Clegg ◽  
Floriana Tuna ◽  
David Collison ◽  
Cameron J. Kepert ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Mixed Valence ◽  
Three Dimensional ◽  
Fundamental Understanding ◽  
Intervalence Charge Transfer ◽  
Metal Organic ◽  
Transfer Properties ◽  
Transfer Mechanisms

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.

Synthesis, Characterization, and Intervalence Charge Transfer Properties of a Series of Rhenium(I)−Iron(III) Mixed-Valence Compounds

1999 ◽  
Vol 38 (3) ◽  
pp. 606-612 ◽  
Author(s):  
Brian W. Pfennig ◽  
Jamie L. Cohen ◽  
Irene Sosnowski ◽  
Nathan M. Novotny ◽  
Douglas M. Ho
Keyword(s):  
Charge Transfer ◽  
Mixed Valence ◽  
Intervalence Charge Transfer ◽  
Mixed Valence Compounds ◽  
Transfer Properties

Stark spectroscopy of mixed-valence systems

2007 ◽  
Vol 366 (1862) ◽  
pp. 33-45 ◽  
Author(s):  
Lisa N Silverman ◽  
Pakorn Kanchanawong ◽  
Thomas P Treynor ◽  
Steven G Boxer
Keyword(s):  
Charge Transfer ◽  
Electric Fields ◽  
Dipole Moments ◽  
Mixed Valence ◽  
Quantitative Information ◽  
Stark Spectroscopy ◽  
Charge Transfer Transition ◽  
Band Position ◽  
Stark Effects ◽  
Intervalence Charge Transfer

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.

scholarly journals Exploiting exciton coupling of ligand radical intervalence charge transfer transitions to tune NIR absorption

2018 ◽  
Vol 9 (6) ◽  
pp. 1610-1620 ◽  
Author(s):  
Ryan M. Clarke ◽  
Tiffany Jeen ◽  
Serena Rigo ◽  
John R. Thompson ◽  
Loren G. Kaake ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Rational Design ◽  
Near Infrared ◽  
Relative Orientation ◽  
Exciton Coupling ◽  
Salen Complexes ◽  
Nir Absorption ◽  
Charge Transfer Transitions ◽  
Intervalence Charge Transfer

We detail the rational design of a series of bimetallic bis-ligand radical Ni salen complexes in which the relative orientation of the ligand radical chromophores provides a mechanism to tune the energy of intense intervalence charge transfer (IVCT) bands in the near infrared (NIR) region.

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