Intramolecular donor-acceptor systems. Radiative and nonradiative processes for the excited states of 2-N-arylamino-6-naphthalenesulfonates

1975 ◽  
Vol 97 (8) ◽  
pp. 2167-2178 ◽  
Author(s):  
Edward M. Kosower ◽  
Hanna Dodiuk ◽  
Kazutake Tanizawa ◽  
Michael Ottolenghi ◽  
Naomi Orbach
Keyword(s):  
Excited States ◽  
Donor Acceptor ◽  
Nonradiative Processes

scholarly journals Rational Design of TADF Polymers Using a Donor-Acceptor Monomer with Enhanced TADF Efficiency Induced by the Energy Alignment of Charge Transfer and Local Triplet Excited States

2016 ◽  
Vol 4 (4) ◽  
pp. 597-607 ◽  
Author(s):  
Roberto S. Nobuyasu ◽  
Zhongjie Ren ◽  
Gareth C. Griffiths ◽  
Andrei S. Batsanov ◽  
Przemyslaw Data ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Excited States ◽  
Rational Design ◽  
Donor Acceptor ◽  
Triplet Excited States

scholarly journals Two-electron transfer stabilized by excited-state aromatization

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Jinseok Kim ◽  
Juwon Oh ◽  
Seongchul Park ◽  
Jose L. Zafra ◽  
Justin R. DeFrancisco ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Excited States ◽  
Transfer Process ◽  
Comprehensive Understanding ◽  
Electron Transfer Process ◽  
Photoactive Materials ◽  
Donor Acceptor ◽  
Scientific Significance

Abstract The scientific significance of excited-state aromaticity concerns with the elucidation of processes and properties in the excited states. Here, we focus on TMTQ, an oligomer composed of a central 1,6-methano[10]annulene and 5-dicyanomethyl-thiophene peripheries (acceptor-donor-acceptor system), and investigate a two-electron transfer process dominantly stabilized by an aromatization in the low-energy lying excited state. Our spectroscopic measurements quantitatively observe the shift of two π-electrons between donor and acceptors. It is revealed that this two-electron transfer process accompanies the excited-state aromatization, producing a Baird aromatic 8π core annulene in TMTQ. Biradical character on each terminal dicyanomethylene group of TMTQ allows a pseudo triplet-like configuration on the 8π core annulene with multiexcitonic nature, which stabilizes the energetically unfavorable two-charge separated state by the formation of Baird aromatic core annulene. This finding provides a comprehensive understanding of the role of excited-state aromaticity and insight to designing functional photoactive materials.

Second order nonlinear optical properties of corroles: experimental and theoretical investigations

2012 ◽  
Vol 16 (12) ◽  
pp. 1276-1284 ◽  
Author(s):  
Xiao Ying ◽  
Xiao-Yan Long ◽  
Mian HR Mahmood ◽  
Quan-Yuan Hu ◽  
Hai-Yang Liu ◽  
...  
Keyword(s):  
Excited States ◽  
Rayleigh Scattering ◽  
Soret Band ◽  
Incident Wavelength ◽  
Maximum Value ◽  
Theoretical Investigations ◽  
Scattering Technique ◽  
Donor Acceptor ◽  
Neglect Of Differential Overlap ◽  
Good Agreement

The first hyperpolarizabilities, βHRS, of corrole derivatives have been measured by using Hyper–Rayleigh Scattering technique. The results showed that βHRS of corroles could be greatly enhanced by modifying its periphery with donor–acceptor groups. Maximum value reaches 354 × 10-30 esu at an incident wavelength of 1500 nm. βHRS of investigated corroles were also calculated with the Zerner's intermediate neglect of differential overlap/configuration interaction/sum-over-states method. The calculated and experimental results are in good agreement and conclude that βHRS arises mainly from the charge transfer along molecule's non-symmetrical axis and strong coupling between two different excited states of the Soret band.

scholarly journals Charge-transfer excited states in the donor/acceptor interface from large-scale GW calculations

2019 ◽  
Vol 151 (11) ◽  
pp. 114109 ◽  
Author(s):  
Takatoshi Fujita ◽  
Yoshifumi Noguchi ◽  
Takeo Hoshi
Keyword(s):  
Charge Transfer ◽  
Excited States ◽  
Large Scale ◽  
Donor Acceptor

scholarly journals Near-infrared light control of membrane potential by an electron donor–acceptor linked molecule

2020 ◽  
Vol 56 (83) ◽  
pp. 12562-12565
Author(s):  
Yuta Takano ◽  
Kazuaki Miyake ◽  
Jeladhara Sobhanan ◽  
Vasudevanpillai Biju ◽  
Nikolai V. Tkachenko ◽  
...  
Keyword(s):  
Membrane Potential ◽  
Excited States ◽  
Electron Donor ◽  
Near Infrared ◽  
Infrared Light ◽  
Light Control ◽  
Near Infrared Light ◽  
Donor Acceptor ◽  
Molecular Excited States

(π-Extended porphyrin)–fullerene linked molecules are synthesized to utilize the molecular excited states induced by near-infrared light. One of the molecules successfully alters the membrane potential.

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