Results 141 to 150 of about 299,211 (194)

Efficient harvesting of triplet excitons via multiple fast TTA up-conversion and high-lying reverse intersystem crossing channels for efficient blue fluorescent organic light-emitting diodes. [PDF]

Chem Sci
Qin J, Qiao X, Xiao S, Yang D, Dai Y, Chen J, Sun Q, Ma D.   +7 more
europepmc   +1 more source

Nonplanar structure accelerates reverse intersystem crossing of TADF emitters: nearly 40% EQE and relieved efficiency roll off. [PDF]

Chem Sci
Liu H, Liu Y, Chen G, Meng Y, Peng H, Miao J, Yang C.   +6 more
europepmc   +1 more source

Ultrafast photophysics of <i>para</i>-substituted 2,5-bis(arylethynyl) rhodacyclopentadienes: thermally activated intersystem crossing. [PDF]

Chem Sci
Guo Z, Wang Y, Heitmüller J, Sieck C, Prüfer A, Ralle P, Steffen A, Henke P, Ogilby PR, Marder TB, Ma X, Brixner T.   +11 more
europepmc   +1 more source

The influence of the doping concentration and reverse intersystem crossing on the efficiency of tricomponent organic light-emitting diodes with the thermally activated delayed fluorescence exciplex emitter. [PDF]

RSC Adv
Guo Z, Kou Z, Xie X, Wang Y, Zhu X, Jin Q, Wang C.   +6 more
europepmc   +1 more source

Enhanced intersystem crossing in carbonylpyrenes

Phys. Chem. Chem. Phys., 2017
Photoexcited state relaxation of carbonylpyrenes displays ultrafast intersystem crossing to generate near-unity triplet formation.
Shinaj K. Rajagopal, Ajith R. Mallia, Mahesh Hariharan   +2 more
openaire   +3 more sources

Nanomagnetic Control of Intersystem Crossing [PDF]

The Journal of Physical Chemistry A, 2009
A theory is presented for how magnetic nanostructures can catalyze intersystem crossing in molecular radical pairs. Magnetic field gradients near physically realistic nanostructures are strong enough to induce a relative reorientation of two electronic spins in
Cohen, Adam
openaire   +5 more sources

Intersystem crossing in the helicenes

Chemical Physics Letters, 1975
Abstract The rate constants of radiationless S1 → Tn and T1 → S0 intersystem crossing of six helicenes have been evaluated by combining emission lifetimes and quantum yields of fluorescence and triplet state formation. The data are compared to those of linear acenes.
Sapir, Michael, Vander Donckt, Emile
openaire   +3 more sources

Intersystem Crossing Processes in Nonplanar Aromatic Heterocyclic Molecules

The Journal of Physical Chemistry A, 2007
A comprehensive study of the photophysical properties of a series of monoaza[5]helicenes is presented on the basis of joint optical spectroscopy and quantum chemistry investigations. The molecules have been characterized by absorption and CW/time-resolved luminescence measurements.
Schmidt, K, BROVELLI, SERGIO, Coropceanu, V, Beljonne, D, Cornil, J, Bazzini, C, Caronna, T, TUBINO, RICCARDO, MEINARDI, FRANCESCO, Shuai, Z, Bredas, JL   +10 more
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Intersystem and Reverse-Intersystem Crossings in Organic Light-Emitting Diodes

The Journal of Physical Chemistry Letters, 2022
Using the first-order perturbation theory and exciton-spin-orbit-photon-molecular-vibration-interaction (ESOPMVI) operator, the rates of reverse intersystem crossing (RISC) and thermally activated delayed fluorescence (TADF) are derived. It is shown that the pre-exponential factor of the rate of TADF is not an absolute constant as is commonly assumed ...
Jai Singh, U. Shakeel, David Ompong, Kiran Sreedhar Ram   +3 more
openaire   +2 more sources

Ultrafast Intersystem Crossing of 4-Thiothymidine in Aqueous Solution

Journal of Physical Chemistry Letters, 2010
Ultrafast intersystem crossing of UVA-sensitive 4-thiothymidine in aqueous solution was investigated by pump?probe transient absorption. 4-Thiothymidine in the excited singlet state exhibited a distinctively different photophysical pathway from that of ...
Yao Xu, Nobuyuki Nishi, Tadashi Suzuki   +2 more
exaly   +2 more sources