Results 141 to 150 of about 323,885 (290)

Extending El Sayed's Rule by 1(n,π*)–3(n,π*) Rotation via Intramolecular Secondary Interaction Enables Room‐Temperature Circularly Polarized Phosphorescence in Solution

open access: yesAngewandte Chemie, EarlyView.
Weak but skilled: Our results highlight the crucial role of intramolecular secondary interactions to induce an efficient ISC between formally identical 1(n,π*) and 3(n,π*) states in chiral thionated phthalimide derivatives. This unprecedented type of inter‐system crossing (ISC) extends the usual thinking of the El‐Sayed principle and enables the ...
Oscar Charpentier   +9 more
wiley   +2 more sources

(Table 5) Luminescence-dating of sediment core PS2200-2 of the Arctic Ocean

open access: yes, 2007
(Table 5) Luminescence-dating of sediment core PS2200-2 of the Arctic ...
Glenn W Berger (6976814)   +1 more
core   +1 more source

TADF‐Active Tetrazole Luminophores for Visible‐Light Functionalization of Nanoparticles and Surfaces

open access: yesAngewandte Chemie, EarlyView.
A series of tetrazoles are reported that undergo 1,3‐dipolar cycloadditions with alkene and alkyne substrates, generating (dihydro)pyrazole products that exhibit thermally activated delayed fluorescence (TADF). The “photo‐click” reactivity of these tetrazoles is leveraged to functionalize nanoparticles and surfaces with TADF‐active chromophores ...
Ryoga Hojo   +11 more
wiley   +2 more sources

Future Directions of Luminescence Dating of Quartz

open access: yes, 2010
Future Directions of Luminescence Dating of Quartz Recent developments in our understanding of the limitations of optically stimulated luminescence as a dating tool are presented alongside summaries of results obtained on other ...
A. Wintle
core   +1 more source

Dissipative Regenerative Chemiluminescence in Water: A Perylene‐Based Out‐of‐Equilibrium Light‐Emitting System

open access: yesAngewandte Chemie, EarlyView.
Driven by sodium dithionite and hydrogen peroxide under mild aqueous conditions, a water‐soluble perylene bisimide undergoes reversible electron‐transfer cycles that generate its emissive excited state without dye decomposition. We define this out‐of‐equilibrium system as chemically fueled regenerative chemiluminescence (CFRCL), opening new avenues for
Luca Morgan   +5 more
wiley   +2 more sources

Created Ex Nihilo: A Near‐Infrared Afterglow Luminescent Framework of Imidazole Derivatives for Bioimaging

open access: yesAngewandte Chemie, EarlyView.
A series of Ir(III) complexes (Ir‐1‐Ir‐4) based on imidazole derivatives provide a new afterglow luminescence mechanism. The work expands the range of afterglow luminescence frameworks to overcome: (i) a lack of new afterglow scaffolds; (ii) the dependence on initial external light activation; and (iii) aggregation‐caused quenching.
Zihan Wu   +9 more
wiley   +2 more sources

用线性激发光释光的快速信号测量石英的辐照总剂量

open access: yes, 2004
The 9th Chinese Conference on Luminescence and Electron Spin Resonance Dating, Lanzhou, China, July ...
Li, SH, Li, B
core  

石英的释光信号作为地质温度计对热流体活动示踪的初步研究

open access: yes, 2004
The 9th Chinese Conference on Luminescence and Electron Spin Resonance Dating, Lanzhou, China, July ...
Chen, YY, Li, SH, Xie, XN
core  

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