Results 11 to 20 of about 33,690 (283)

Afterglow Carbon Dots: From Fundamentals to Applications

Research, 2021
The ability of carbon dots (CDs) to emit afterglow emission in addition to fluorescence in response to UV-to-visible excitation allows them to be a new class of luminescent materials.
Chenxi Peng, Xue Chen, Meiling Chen, Shenci Lu, Yu Wang, Suli Wu, Xiaowang Liu, Wei Huang   +7 more
doaj   +2 more sources

Narrowband Organic/Inorganic Hybrid Afterglow Materials

Molecules
Narrowband afterglow materials display interesting functions in high-quality anti-counterfeiting and multiplexed bioimaging. However, there is still a limited exploration of these afterglow materials, especially for those with a full width at half maxima
Wen Xia, Xun Li, Junbo Li, Qianqian Yan, Guangming Wang, Xixi Piao, Kaka Zhang   +6 more
doaj   +2 more sources

Molecular afterglow imaging for biomedical applications

Nature Materials
Afterglow imaging is an emerging optical modality using agents that emit long-lasting luminescence after excitation ceases to eliminate tissue autofluorescence and improve signal-to-background ratios, achieving high imaging sensitivity and deep tissue ...
Cheng Xu, Yan Zhang, Gaolin Liang, Kanyi Pu   +3 more
semanticscholar   +2 more sources

Complex Plasma Afterglow [PDF]

Contributions to Plasma Physics, 2009
AbstractIn complex plasmas, dust particles are charged through their interactions with the electrons and the ions of the surrounding plasma. In laboratory discharges, when the discharge is turned off, the charged species of the plasma diffuse away and recombine into neutral species.
Couëdel, L., Mezeghrane, A., Samarian, A., Mikikian, M., Tessier, Y., Cavarroc, M., Boufendi, L.   +6 more
openaire   +3 more sources

Edible Long‐Afterglow Photoluminescent Materials for Bioimaging

Advances in Materials
Confining luminophores into modified hydrophilic matrices or polymers is a straightforward and widely used approach for afterglow bioimaging. However, the afterglow quantum yield and lifetime of the related material remain unsatisfactory, severely ...
Shen Shen, Qishan Xie, S. R. Sahoo, Jian Jin, G. Baryshnikov, Hao Sun, Hongwei Wu, Hans Ågren, Qingsong Liu, Liangliang Zhu   +9 more
semanticscholar   +2 more sources

Photoluminescence and afterglow of Tb3+ doped BaAl2O4

Results in Physics
Tb3+ doped BaAl2O4 phosphors (0–9.0 mol%) were prepared through sol–gel combustion method. The crystal structure, morphology, chemical composition, photoluminescence (PL), afterglow and thermoluminescence (TL) glow curve of Tb3+ doped BaAl2O4 were ...
Yungao Cai, Xiaomin Wang, Yuan Ming Huang   +2 more
doaj   +2 more sources

GRB AFTERGLOW [PDF]

EAS Publications Series, 2013
Recent observations of broad-band afterglow of gamma-ray bursts (GRBs) suggest that the standard external shock model cannot account for all the data.
B. Zhang, Zhang, B.
openaire   +2 more sources

Aggregation-Controlled Triplet Exciton Regulation Enables Single-Emitter Color-Evolving Afterglow. [PDF]

Adv Sci (Weinh)
A single‐emitter system based on DTP‐R luminophores enables time‐evolving afterglow through aggregation‐regulated excited‐state dynamics. The coexistence and suppression of delayed fluorescence and phosphorescence are controlled via concentration tuning and host‐guest engineering, revealing the RISC origin of delayed fluorescence and enabling ...
Zhang Y, Liu Z, Alfani GA, Wei X, Zhang Y, Cui Z, Lu Y, Chen Y, Liu D, Lu L, Deng Z, Xue S, Alam P, Zhao Z, Tang BZ.   +14 more
europepmc   +2 more sources

Precisely Regulating 2.45 s Pure Blue Room-Temperature Phosphorescence via Supramolecular Coordination. [PDF]

Adv Sci (Weinh)
Herein, a pure deep blue room‐temperature phosphorescence (415 nm) with lifetime up to 2.45 s is successfully achieved by a covalently crosslinking purely organic material based on boric acid (BA) and 3,5‐dicarboxyphenylboronic acid (BOP) through a simple dehydration reaction, which can be adjusted precisely by supramolecular coordination with ...
Wang J, Que X, Chen Z, Zhang J, Zhou WL, Xu WW.   +5 more
europepmc   +2 more sources

Photoactivation-Enabled Tunable Room-Temperature Phosphorescence and Thermally Activated Delayed Fluorescence in Crystalline Materials. [PDF]

Adv Sci (Weinh)
This work is the first to demonstrate the regulation of photoactivated room‐temperature phosphorescence (RTP) and thermally activated delayed fluorescence (TADF) in crystalline materials without any pretreatment. Furthermore, we reveal the underlying mechanisms by uncovering the role of host‐guest energy level alignment, exciton lifetime, crystallinity,
Zhang L, Wu Y, Sahalianov I, Zhou L, Baryshnikov G, Ma X.   +5 more
europepmc   +2 more sources