Strong Photophysical Diversity and the Role of Charge Transfer Excitons in Transition Metal Phthalocyanine β-Phases

2021 ◽  
Author(s):  
Louis P. Doctor ◽  
Marco Naumann ◽  
Frank Ziegs ◽  
Bernd Büchner ◽  
Alexey Popov ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Transition Metal ◽  
Metal Phthalocyanine ◽  
Charge Transfer Excitons

scholarly journals Graphene catalyzes the reversible formation of a C–C bond between two molecules

2018 ◽  
Vol 4 (12) ◽  
pp. eaau9366 ◽  
Author(s):  
J. J. Navarro ◽  
M. Pisarra ◽  
B. Nieto-Ortega ◽  
J. Villalva ◽  
C. G. Ayani ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Transition Metal ◽  
Chemical Reaction ◽  
Transition Metal Catalysts ◽  
Magnetic Switch ◽  
Kondo Resonance ◽  
Efficient Charge ◽  
Catalytic Role ◽  
Reversible Formation

Carbon deposits are well-known inhibitors of transition metal catalysts. In contrast to this undesirable behavior, here we show that epitaxial graphene grown on Ru(0001) promotes the reversible formation of a C–C bond between −CH2CN and 7,7,8,8-tetracyano-p-quinodimethane (TCNQ). The catalytic role of graphene is multifaceted: First, it allows for an efficient charge transfer between the surface and the reactants, thus favoring changes in carbon hybridization; second, it holds the reactants in place and makes them reactive. The reaction is fully reversible by injecting electrons with an STM tip on the empty molecular orbitals of the product. The making and breaking of the C–C bond is accompanied by the switching off and on of a Kondo resonance, so that the system can be viewed as a reversible magnetic switch controlled by a chemical reaction.

Dynamics of charge-transfer excitons in a transition metal dichalcogenide heterostructure

Nanoscale ◽  
2020 ◽  
Vol 12 (15) ◽  
pp. 8485-8492
Author(s):  
Ang Bian ◽  
Dawei He ◽  
Shengcai Hao ◽  
Yang Fu ◽  
Lu Zhang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Transition Metal ◽  
Transition Metal Dichalcogenide ◽  
Cooling Process ◽  
Charge Transfer Excitons

Hot charge-transfer excitons are formed in a transition metal dichalcogenide trilayer heterostructure and diffuse during their cooling process.

scholarly journals Charge transfer excitons in low band gap polymer based solar cells and the role of processing additives

2011 ◽  
Vol 4 (12) ◽  
pp. 5077 ◽  
Author(s):  
Markus C. Scharber ◽  
Christoph Lungenschmied ◽  
Hans-Joachim Egelhaaf ◽  
Gebhard Matt ◽  
Mateusz Bednorz ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Band Gap ◽  
Low Band Gap ◽  
Charge Transfer Excitons ◽  
Low Band Gap Polymer

scholarly journals Charge transfer excitons in a donor–acceptor amphidynamic crystal: the role of dipole orientational order

2020 ◽  
Vol 7 (11) ◽  
pp. 2951-2958
Author(s):  
Joshua W. R. Macdonald ◽  
Giacomo Piana ◽  
Massimiliano Comin ◽  
Elizabeth von Hauff ◽  
Gabriele Kociok-Köhn ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Large Amplitude ◽  
Orientational Order ◽  
Molecular Solids ◽  
Electrical Characteristics ◽  
Large Amplitude Motions ◽  
Donor Acceptor ◽  
Charge Transfer Excitons

Large amplitude motions in molecular solids are responsible for anomalous electrical characteristics in amphidynamic crystals. Here we explore the implications for charge transfer excitons photophysics.

Charge Transfer Excitons in Polymer/Fullerene Blends: The Role of Morphology and Polymer Chain Conformation

2009 ◽  
Vol 19 (22) ◽  
pp. 3662-3668 ◽  
Author(s):  
Markus Hallermann ◽  
Ilka Kriegel ◽  
Enrico Da Como ◽  
Josef M. Berger ◽  
Elizabeth von Hauff ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Polymer Chain ◽  
Chain Conformation ◽  
Polymer Chain Conformation ◽  
Charge Transfer Excitons
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