Intersystem crossing via charge recombination in a perylene–naphthalimide compact electron donor/acceptor dyad

2020 ◽  
Vol 8 (24) ◽  
pp. 8305-8319
Author(s):  
Muhammad Imran ◽  
Ahmed M. El-Zohry ◽  
Clemens Matt ◽  
Maria Taddei ◽  
Sandra Doria ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Triplet State ◽  
Singlet Oxygen ◽  
Electron Donor ◽  
Charge Recombination ◽  
Intersystem Crossing ◽  
Donor Acceptor ◽  
State Production

Efficient triplet state production (singlet oxygen quantum yield: 80%) by SOCT-ISC was observed for a perylene–naphthalimide compact electron donor/acceptor dyad.

An exceptionally long-lived triplet state of red light-absorbing compact phenothiazine-styrylBodipy electron donor/acceptor dyads: a better alternative to the heavy atom-effect?

2020 ◽  
Vol 56 (11) ◽  
pp. 1721-1724 ◽  
Author(s):  
Yuqi Hou ◽  
Qingyun Liu ◽  
Jianzhang Zhao
Keyword(s):  
Charge Transfer ◽  
Triplet State ◽  
Electron Donor ◽  
Heavy Atom ◽  
Red Light ◽  
Intersystem Crossing ◽  
Spin Orbital ◽  
Heavy Atom Effect ◽  
Donor Acceptor ◽  
Atom Effect

Heavy atom-free dyads showing a red light-absorbing and exceptionally long-lived triplet state based on a spin–orbital charge transfer intersystem crossing mechanism.

Spin–orbit charge transfer intersystem crossing in perylenemonoimide–phenothiazine compact electron donor–acceptor dyads

2018 ◽  
Vol 54 (87) ◽  
pp. 12329-12332 ◽  
Author(s):  
Yingjie Zhao ◽  
Ruomeng Duan ◽  
Jianzhang Zhao ◽  
Chen Li
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Electron Donor ◽  
Intersystem Crossing ◽  
Spin Orbit ◽  
Triplet Excited State ◽  
Donor Acceptor ◽  
State Production

Efficient triplet excited state production (57%) was observed for perylenemonoimide–phenothiazine compact electron donor–acceptor dyads based on spin–orbit charge transfer ISC.

scholarly journals Heavy-atom-free BODIPY photosensitizers with intersystem crossing mediated by intramolecular photoinduced electron transfer

2020 ◽  
Vol 18 (1) ◽  
pp. 10-27 ◽  
Author(s):  
Mikhail A. Filatov
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Triplet State ◽  
Singlet Oxygen ◽  
Photoinduced Electron Transfer ◽  
Heavy Atom ◽  
Intersystem Crossing ◽  
Oxygen Generation ◽  
Singlet Oxygen Generation ◽  
Donor Acceptor

This review discusses photoinduced electron transfer, triplet state formation from charge transfer states and singlet oxygen generation by heavy-atom-free BODIPY donor–acceptor dyads and dimers.

Light harvesting vesicular donor–acceptor scaffold limits the rate of charge recombination in the presence of an electron donor

2014 ◽  
Vol 7 (5) ◽  
pp. 1661-1669 ◽  
Author(s):  
Rijo T. Cheriya ◽  
Ajith R. Mallia ◽  
Mahesh Hariharan
Keyword(s):  
Charge Transfer ◽  
Survival Time ◽  
Electron Donor ◽  
Self Assembly ◽  
Light Harvesting ◽  
Charge Recombination ◽  
Donor Acceptor

This work highlights the utility of π–π stacked self-assembly for enhanced survival time of charge transfer intermediates upon photoexcitation of donor–acceptor systems.

Cover Picture: Blue-Emitting Electron-Donor/Acceptor Dyads for Naked-Eye Fluorescence Detection of Singlet Oxygen (ChemPhotoChem 7/2017)

ChemPhotoChem ◽  
2017 ◽  
Vol 1 (7) ◽  
pp. 297-297
Author(s):  
Reiko Kohara ◽  
Ken-ichi Yuyama ◽  
Yasushi Shigeri ◽  
Vasudevanpillai Biju
Keyword(s):  
Singlet Oxygen ◽  
Fluorescence Detection ◽  
Electron Donor ◽  
Naked Eye ◽  
Donor Acceptor

Photolysis of ketene. I

1968 ◽  
Vol 46 (14) ◽  
pp. 2353-2360 ◽  
Author(s):  
A. N. Strachan ◽  
D. E. Thornton
Keyword(s):  
Carbon Monoxide ◽  
Quantum Yield ◽  
Triplet State ◽  
Singlet State ◽  
Inert Gases ◽  
Inert Gas ◽  
Excited Singlet State ◽  
Intersystem Crossing ◽  
Excited Singlet ◽  
Increasing Temperature

Ketene has been photolyzed at 3660 and 3130 Å both alone and in the presence of the inert gases C4F8 and SF6. The quantum yield of carbon monoxide has been determined at both wavelengths as a function of pressure and temperature. At 3660 Å the quantum yield decreases with increasing pressure but increases with increasing temperature. At 3130 Å the quantum yield with ketene alone remains 2.0 at both 37 and 100 °C at pressures up to 250 mm. At higher pressures of ketene or with added inert gas the quantum yield decreases with increasing pressure. The results are interpreted in terms of a mechanism in which intersystem crossing from the excited singlet state to the triplet state occurs at both wavelengths, and collisional deactivation of the excited singlet state by ketene is single stage at 3660 Å but multistage at 3130 Å.

Identification of a receiver triplet state in the ultrafast intersystem crossing of carbonylpyrenes

2020 ◽  
Vol 22 (11) ◽  
pp. 6145-6153
Author(s):  
Lekshmi R. S. ◽  
Gayathri B. Kurup ◽  
Sivaranjana Reddy Vennapusa
Keyword(s):  
Quantum Yield ◽  
Triplet State ◽  
Intersystem Crossing

The intersystem crossing receiver triplet state lifetime dictates the efficiency of the triplet quantum yield in carbonylpyrenes.

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