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.

Enhancement of Reverse Intersystem Crossing in Charge‐Transfer Molecule through Internal Heavy Atom Effect

2021 ◽  
pp. 2104646
Author(s):  
Hyung Suk Kim ◽  
Ja Yeon Lee ◽  
Seongjun Shin ◽  
Wonkyo Jeong ◽  
Sang Hoon Lee ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Heavy Atom ◽  
Intersystem Crossing ◽  
Heavy Atom Effect ◽  
Atom Effect

scholarly journals Enhancement of Reverse Intersystem Crossing in Charge‐Transfer Molecule through Internal Heavy Atom Effect (Adv. Funct. Mater. 50/2021)

2021 ◽  
Vol 31 (50) ◽  
pp. 2170374
Author(s):  
Hyung Suk Kim ◽  
Ja Yeon Lee ◽  
Seongjun Shin ◽  
Wonkyo Jeong ◽  
Sang Hoon Lee ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Heavy Atom ◽  
Intersystem Crossing ◽  
Heavy Atom Effect ◽  
Atom Effect

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.

Löschung der Perylen-Fluoreszenz durch Ag+ -Ionen / Quenching of the Perylene Fluorescence by Ag+-Ions

1983 ◽  
Vol 38 (6) ◽  
pp. 698-700 ◽  
Author(s):  
H. Dreeskamp ◽  
A. Läufer ◽  
M. Zander
Keyword(s):  
Triplet State ◽  
Dynamic Process ◽  
Aromatic Compounds ◽  
Heavy Atom ◽  
Silver Ions ◽  
Intersystem Crossing ◽  
Fluid Solution ◽  
Long Wavelength ◽  
Wavelength Emission ◽  
Atom Effect

The fluorescence of perylene in fluid solution (λ0.0 = 440 nm) is quenched by silver ions in a dynamic process according to a Stern-Volmer kinetics (kq = 2 · 109 [1 • mol-1 · sec-1], in ethanol at 295 K). Simultaneously an unstructured long-wavelength emission (λmax ≈ 470 nm) appears which we assign to a perylene/Ag+ exciplex. A similar emission is observed when other polvcyclic aromatic compounds (PAC) are used, whose fluorescence as in the case of perylene is not easily quenched in an external heavy atom effect by iodopropane (kq ≦ 106). In these cases the excited PAC/Ag+ complex is long-lived enough to emit fluorescence since the intersystem crossing to the triplet system is slow due to the absence of an energetically favorable accepting triplet state

Carbazole-perylenebisimide electron donor/acceptor dyads showing efficient spin orbit charge transfer intersystem crossing (SOCT-ISC) and photo-driven intermolecular electron transfer

2020 ◽  
Vol 8 (14) ◽  
pp. 4701-4712 ◽  
Author(s):  
Noreen Rehmat ◽  
Antonio Toffoletti ◽  
Zafar Mahmood ◽  
Xue Zhang ◽  
Jianzhang Zhao ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Electron Donor ◽  
Intersystem Crossing ◽  
Spin Orbit ◽  
Intermolecular Electron Transfer ◽  
Donor Acceptor

An efficient spin orbit charge transfer intersystem crossing (SOCT-ISC) was demonstrated in non-orthogonal compact carbazole-perylenebisimide electron donor/acceptor dyads.

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