scholarly journals Occurrence of excited state charge separation in a N-doped graphene–perylenediimide hybrid formed via ‘click’ chemistry

2019 ◽  
Vol 1 (10) ◽  
pp. 4009-4015 ◽  
Author(s):  
Habtom B. Gobeze ◽  
Luis M. Arellano ◽  
Ana María Gutiérrez-Vílchez ◽  
María J. Gómez-Escalonilla ◽  
Ángela Sastre-Santos ◽  
...  
Keyword(s):  
Excited State ◽  
Click Chemistry ◽  
Charge Separation ◽  
Perylene Diimide ◽  
Doped Graphene ◽  
Donor Acceptor ◽  
State Charge

A donor–acceptor hybrid was devised and synthesized using N-doped graphene and perylene diimide via click chemistry, and the occurrence of excited state charge separation is demonstrated.

scholarly journals Sc3N@Ih-C80 based donor–acceptor conjugate: role of thiophene spacer in promoting ultrafast excited state charge separation

RSC Advances ◽  
2020 ◽  
Vol 10 (34) ◽  
pp. 19861-19866
Author(s):  
Rubén Caballero ◽  
Luis David Servián ◽  
Habtom B. Gobeze ◽  
Olivia Fernandez-Delgado ◽  
Luis Echegoyen ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Separation ◽  
Charge Recombination ◽  
Photoinduced Charge Separation ◽  
Donor Acceptor ◽  
Photoinduced Charge ◽  
State Charge

Photoinduced charge separation and dark charge recombination occurring within picoseconds is observed in newly synthesized triphenylamine–thiophene-Sc3N@Ih-C80 and triphenylamine–thiophene-C60 conjugates.

scholarly journals Anion-enhanced excited state charge separation in a spiro-locked N-heterocycle-fused push-pull zinc porphyrin

2021 ◽  
Author(s):  
Mandeep K. Chahal ◽  
Anuradha Liyanage ◽  
Ajyal Z. Alsaleh ◽  
Paul A. Karr ◽  
Jonathan P. Hill ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Charge Separation ◽  
Charge Transfer Complex ◽  
Zinc Porphyrin ◽  
New Type ◽  
State Charge

A new type of push–pull charge transfer complex, viz., a spiro-locked N-heterocycle-fused zinc porphyrin, ZnP-SQ, is shown to undergo excited state charge separation, which is enhanced by axial F− binding to the Zn center.

scholarly journals Excited state charge separation in an azobenzene‐bridged perylenediimide dimer – effect of photochemical trans‐cis isomerization

2021 ◽  
Author(s):  
Nathalie Zink-Lorre ◽  
Sairaman Seetharaman ◽  
David Gutiérrez-Moreno ◽  
Fernando Fernández-Lázaro ◽  
Paul A. Karr ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Separation ◽  
State Charge

scholarly journals Charge separation in the excited state electron donor—acceptor compounds containing the piperazine moiety

1991 ◽  
Vol 180 (6) ◽  
pp. 556-562 ◽  
Author(s):  
A.M. Brouwer ◽  
R.D. Mout ◽  
P.H.Maassen van den Brink ◽  
H.J. van Ramesdonk ◽  
J.W. Verhoeven ◽  
...  
Keyword(s):  
Excited State ◽  
Electron Donor ◽  
Charge Separation ◽  
State Electron ◽  
Donor Acceptor

Bending-Type Electron Donor–Donor–Acceptor Triad: Dual Excited-State Charge-Transfer Coupled Structural Relaxation

2019 ◽  
Vol 31 (15) ◽  
pp. 5981-5992 ◽  
Author(s):  
Jia-An Lin ◽  
Shu-Wei Li ◽  
Zong-Ying Liu ◽  
Deng-Gao Chen ◽  
Chun-Ying Huang ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Electron Donor ◽  
Structural Relaxation ◽  
Donor Acceptor ◽  
State Charge

scholarly journals Excited‐State Charge Transfer in Covalently Functionalized MoS 2 with a Zinc Phthalocyanine Donor–Acceptor Hybrid

2019 ◽  
Vol 131 (17) ◽  
pp. 5768-5773 ◽  
Author(s):  
Ruben Canton‐Vitoria ◽  
Habtom B. Gobeze ◽  
Vicente M. Blas‐Ferrando ◽  
Javier Ortiz ◽  
Youngwoo Jang ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Zinc Phthalocyanine ◽  
Donor Acceptor ◽  
State Charge

ChemInform Abstract: The Design and Preparation of Transition Metal Triad Systems for Excited-State Charge Separation.

ChemInform ◽  
2010 ◽  
Vol 25 (36) ◽  
pp. no-no
Author(s):  
J. D. PETERSEN ◽  
S. L. GAHAN ◽  
S. C. RASMUSSEN ◽  
S. E. RONCO
Keyword(s):  
Excited State ◽  
Transition Metal ◽  
Charge Separation ◽  
State Charge

Excited-State Symmetry-Breaking Charge Separation Dynamics in Multibranched Perylene Diimide Molecules

2020 ◽  
Vol 11 (24) ◽  
pp. 10329-10339
Author(s):  
Jie Kong ◽  
Wei Zhang ◽  
Gang Li ◽  
Dayujia Huo ◽  
Yuanyuan Guo ◽  
...  
Keyword(s):  
Excited State ◽  
Symmetry Breaking ◽  
Charge Separation ◽  
Perylene Diimide

Donor-acceptor conjugates derived from cobalt porphyrin and fullerene via metal-ligand axial coordination: Formation and excited state charge separation

2021 ◽  
pp. A-N
Author(s):  
Dili R. Subedi ◽  
Youngwoo Jang ◽  
Ashwin Ganesan ◽  
Sydney Schoellhorn ◽  
Ryan Reid ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Charge Separation ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Cobalt Porphyrin ◽  
Axial Coordination ◽  
Cobalt Porphyrins ◽  
Donor Acceptor ◽  
Metal Ligand

Two types of cobalt porphyrins, viz., meso-tetrakis(tolylporphyrinato)cobalt(II), (TTP)Co (1), and meso-tetrakis(triphenylamino porphyrinato)cobalt(II), [(TPA)4P]Co, (2) were self-assembled via metal-ligand axial coordination of phenyl imidazole functionalized fulleropyrrolidine, ImC[Formula: see text] to form a new series of donor–acceptor constructs. A 1:2 complex formation with ImC[Formula: see text] was established in the case of (TTP)Co while for [(TPA)4P]Co only a 1:1 complex was possible to positively identify. The binding constants [Formula: see text] and [Formula: see text] for step-wise addition of ImC[Formula: see text] to (TTP)Co were found to be 1.07 × 105 and 3.20 × 104 M[Formula: see text], respectively. For [(TPA)4P]Co:ImC[Formula: see text], the measured [Formula: see text] values was found to be 6.48 × 104 M[Formula: see text], slightly smaller than that observed for (TTP)Co. Although both cobalt porphyrins were non-fluorescent, they were able to quench the fluorescence of ImC[Formula: see text] indicating occurrence of excited state events in the supramolecular donor-acceptor complexes. Electrochemistry coupled with spectroelectrochemistry, revealed the formation of cobalt(III) porphyrin cation instead of a cobalt(II) porphyrin radical cation, as the main product, during oxidation of phenyl imidazole coordinated cobalt porphyrin. With the help of computational and electrochemical results, an energy level diagram was constructed to witness excited state photo-events. Competitive energy and electron transfer from excited CoP to coordinated ImC[Formula: see text], and electron transfer from Im1C[Formula: see text]* to cobalt(II) porphyrin resulting into the formation of PCo[Formula: see text]:ImC[Formula: see text] charge separated state was possible to envision from the energy diagram. Finally, using femtosecond transient absorption spectroscopy and data analysis by Glotaran, it was possible to establish sequential occurrence of energy transfer and charge separation processes. The lifetime of the final charge separated state was [Formula: see text] 2 ns. A slightly better charge stabilization was observed in the case of [(TPA)4P]Co:ImC[Formula: see text] due to the presence of electron rich, peripheral triphenylamine substituents on the cobalt porphyrin.

scholarly journals Excited State Charge Separation in Solution and in Electropolymerized Films of Terthiophene-Fullerene Dyad and Phenothiazine-Terthiophene-Fullerene Triad

2016 ◽  
Vol 6 (6) ◽  
pp. M3007-M3013 ◽  
Author(s):  
Kurt Bodenstedt ◽  
Gary N. Lim ◽  
Mark Vdouychenko ◽  
Tania Estrada ◽  
Navaneetha K. Subbaiyan ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Separation ◽  
State Charge
Sign in / Sign up

Export Citation Format

Share Document