scholarly journals Bonding diversity in rock salt-type tellurides: examining the interdependence between chemical bonding and materials properties

RSC Advances ◽  
2021 ◽  
Vol 11 (34) ◽  
pp. 20679-20686
Author(s):  
Jasmin Simons ◽  
Jan Hempelmann ◽  
Kai S. Fries ◽  
Peter C. Müller ◽  
Richard Dronskowski ◽  
...  
Keyword(s):  
Solid State ◽  
Physical Properties ◽  
Rock Salt ◽  
Chemical Bonding ◽  
Electronic Structures ◽  
Proper Understanding ◽  
Materials Properties ◽  
Solid State Materials ◽  
Future Technologies

Future technologies are in need of solid-state materials showing the desired chemical and physical properties, and designing such materials requires a proper understanding of their electronic structures.

scholarly journals Probing the Validity of the Zintl−Klemm Concept for Alkaline-Metal Copper Tellurides by Means of Quantum-Chemical Techniques

Materials ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2178 ◽  
Author(s):  
Sabrina Smid ◽  
Simon Steinberg
Keyword(s):  
Solid State ◽  
Physical Properties ◽  
Electronic Structures ◽  
Quantum Chemical ◽  
Closed Shell ◽  
Alkaline Metal ◽  
Crystal Orbital ◽  
Structural Preferences ◽  
Valence Electrons ◽  
Chemical Techniques

Understanding the nature of bonding in solid-state materials is of great interest for their designs, because the bonding nature influences the structural preferences and chemical as well as physical properties of solids. In the cases of tellurides, the distributions of valence-electrons are typically described by applying the Zintl−Klemm concept. Yet, do these Zintl−Klemm treatments provide adequate pictures that help us understanding the bonding nature in tellurides? To answer this question, we followed up with quantum-chemical examinations on the electronic structures and the bonding nature of three alkaline-metal copper tellurides, i.e., NaCu3Te2, K2Cu2Te5, and K2Cu5Te5. In doing so, we accordingly probed the validity of the Zintl−Klemm concept for these ternary tellurides, based on analyses of the respective projected crystal orbital Hamilton populations (−pCOHP) and Mulliken as well as Löwdin charges. Since all of the inspected tellurides are expected to comprise Cu−Cu interactions, we also paid particular attention to the possible presence of closed-shell interactions.

Improved Sol-Gel Materials for Efficient Solid State Dye Lasers

1993 ◽  
Vol 329 ◽  
Author(s):  
Michael Canva ◽  
Patrick Georges ◽  
Jean-Fran^ois Perelgritz ◽  
Alain Brun ◽  
Fréddric Chaput ◽  
...  
Keyword(s):  
Solid State ◽  
Physical Properties ◽  
Room Temperature ◽  
Sol Gel ◽  
Tunable Lasers ◽  
Optical Quality ◽  
Dye Lasers ◽  
Laser Dyes ◽  
Host Matrix ◽  
Host Matrices

AbstractPhotoresistant laser dyes were trapped in silica based xerogel host matrices to obtain solid state tunable lasers. For this purpose very dense xerogel samples with improved chemical and physical properties were prepared at room temperature by the sol-gel technology. The as-prepared materials were polished to obtain optical quality surfaces and were used as new lasing media.Lasing action of such different dyes as rhodamine, perylene and pyrromethene doping dense sol-gel matrices was demonstrated. Efficiencies of 30 % or lifetimes of more than 100,000 shots were achieved with different new ≤dye dopant/host matrix≥ couples. Their different performances are reviewed and discussed.

Photoresponsive Frameworks: Energy Transfer in the Spotlight

2021 ◽  
Author(s):  
Corey R. Martin ◽  
Kyoung Chul Park ◽  
Ryan E. Corkill ◽  
Preecha Kittikhunnatham ◽  
Gabrielle A. Leith ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Solid State ◽  
Covalent Organic Frameworks ◽  
Photochromic Behavior ◽  
Solid State Materials

In this paper, spiropyran-containing metal- and covalent-organic frameworks (MOFs and COFs, respectively) are probed as platforms for fostering photochromic behavior in solid-state materials while simultaneously promoting directional energy transfer (ET)....

Synthesis of New Chalcogenide Materials. The Novel One-Dimensional Semiconductor K4 Ti3 S14

1987 ◽  
Vol 97 ◽  
Author(s):  
Steven A. Sunshine ◽  
Doris Kang ◽  
James A. Ibers
Keyword(s):  
Electrical Conductivity ◽  
Solid State ◽  
Alkali Metal ◽  
The Novel ◽  
Conductivity Measurements ◽  
One Dimensional ◽  
General Utility ◽  
Solid State Materials ◽  
Chalcogenide Materials

ABSTRACTThe use of A2 Q/Q melts (A - alkali metal, Q - S or Se) for the synthesis of new one-dimensional solid-state materials is found to be of general utility and is illustrated here for the synthesis of K4 Ti3 SI4. Reaction of Ti metal with a K2 S/S melt at 375°C for 50 h affords K4 Ti3 SI4. The structure possesses one-dimensional chains of seven and eightcoordinate Ti atoms with each chain isolated from all others by surrounding K atoms. There are six S-S pairs (dave - 2.069(3) Å) so that the compound is one of TiIV and may be described as K4 [Ti3 (S)2 (S2)6]. Electrical conductivity measurements indicate that this material is a semiconductor.

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