Results 71 to 80 of about 4,421,258 (226)

Room-Temperature Phosphorescence from Encapsulated Pyrene Induced by Xenon

, 2019
Phosphorescence from pyrene especially at room temperature is uncommon. This emission was recorded utilizing a supramolecular organic host and the effect due to the heavy atom.
V. Ramamurthy (1273026), Gaurav Sharma (749390), Rajeev Prabhakar (160435), A. Mohan Raj (7481693)   +3 more
core   +1 more source

Efficient Room-Temperature Luminescence of Indole-5-Carboxamide in Poly(vinyl alcohol) Films

Photochem
N-phenyl-1H-Indole-5-carboxamide (Ind-CA) exhibits previously unknown room-temperature phosphorescence (RTP) when immobilized in poly (vinyl alcohol) film (PVA film).
Bong Lee, Agnieszka Jablonska, Rajveer Sagoo, Danh Pham, Trang Thien Pham, Sergei V. Dzyuba, Zygmunt Gryczynski, Ignacy Gryczynski   +7 more
doaj   +1 more source

Specific Position of Halogen in Crystalline TADF Scintillators Enables Efficient Triplet Harvesting Through Vibrational Modulation of Spin–Orbit Coupling

Advanced Materials, EarlyView.
Specific ortho‐halogenation transforms crystalline TADF emitters into efficient organic scintillators. Fluorine reduces the effective singlet–triplet separation, while chlorine combines near‐degenerate excited states with vibrational modulation of spin–orbit coupling.
Illia E. Serdiuk, Michał Mońka, Artur Sikorski, Konrad J. Drozdowski, Mohanad S. Eid, Krzysztof Wisniewski, Damian Trzybiński, Marcin E. Witkowski, Winicjusz Drozdowski   +8 more
wiley   +1 more source

Immediate Organic Room‐Temperature Phosphorescence in Programmable Luminescent Tags Enabled by Oxygen‐Free Fabrication

Advanced Materials Technologies, EarlyView.
Programmable luminescent tags based on organic room‐temperature phosphorescence are shown to be governed by oxygen incorporation during fabrication. Oxygen‐free processing enables immediate phosphorescence activation, controlled thermal preconditioning, and tunable activation doses.
Lucy Winkler, Karl Sebastian Schellhammer, Sebastian Reineke   +2 more
wiley   +1 more source

Mechanical Stretch α‐Cyclodextrin Pseudopolyrotaxane Elastomer with Reversible Phosphorescence Behavior

Advanced Science
Polyethylene glycol chains in two terminals of the naphthalene functional group are threaded into α‐cyclodextrin cavities to form the pseudopolyrotaxane (NPR), which not only effectively induces the phosphorescence of the naphthalene functional group by ...
Yi Zhang, Yong Chen, Jian‐Qiu Li, Song‐En Liu, Yu Liu   +4 more
doaj   +1 more source

Photoluminescence Reshaping via Structural Confinement and Local Density of Optical States Control in Ir(III)‐Doped Biodegradable Metasurfaces

Advanced Materials Technologies, EarlyView.
Phosphorescent biodegradable metasurface showing vibronic selection and spectral photoluminescence narrowing. Anti‐correlation between experimental LDOS and measured lifetimes. ABSTRACT Metasurfaces incorporating phosphorescent emitters offer a route to engineer radiative and vibronic processes beyond chemical design.
Vincenzo Caligiuri, Andrea Smeriglio, Svetlana Siprova, Olga Favale, Francesca Leone, Roberto Termine, Debora Policastro, Alessandra Crispini, Attilio Golemme, Nicolas Godbert, Iolinda Aiello, Antonio De Luca   +11 more
wiley   +1 more source

Room temperature phosphorescence lifetime and spectrum tuning of substituted thianthrenes [PDF]

, 2017
A group of thianthrene derivatives has been studied to investigate the effect of different substituents and substitution positions on their photophysical behavior.
Piotr Pander, Fernando B. Dias, Swist, Agnieszka, Soloducho, Jadwiga, Agnieszka Swist, Dias, Fernando B., Jadwiga Soloducho, Pander, Piotr   +7 more
core   +1 more source

Continuous Condensed Triplet Accumulation for Irradiance‐Induced Anticounterfeit Afterglow

Advanced Science, 2023
Afterglow room‐temperature emission that is independent of autofluorescence after ceasing excitation is a promising technology for state‐of‐the‐art bioimaging and security devices.
Ende Hopsah Badriyah, Kikuya Hayashi, Bahadur Sk, Rina Takano, Takayuki Ishida, Shuzo Hirata   +5 more
doaj   +1 more source

Red Room Temperature Phosphorescence from Lignin

Angewandte Chemie
Abstract Materials with red room‐temperature phosphorescence (RTP) derived from sustainable resources are crucial but rarely reported. Here, we produced red RTP materials from lignin. Lignin was covalently modified with Upy (1‐(6‐isocyanatohexyl)‐3‐(6‐methyl‐4‐oxo‐1,4‐dihydropyrimidin‐2‐yl) urea) to obtain Lig‐Upy.
Hongda Guo, Huanjie Cheng, Ruixia Liu, Xiaoxia Chen, Luyao Wang, Chenhui Yang, Shujun Li, Shouxin Liu, Jian Li, Qingjiang Pan, Tony D. James, Zhijun Chen   +11 more
openaire   +2 more sources

Ligand‐Dependent Locally Excited and Charge‐Transfer Emission in Linear Copper(I) Mesoionic Carbene Luminophores

Advanced Optical Materials, EarlyView.
Ligand engineering enables precise control of emission in linear Cu(I) complexes by tuning donor–acceptor interactions between electron‐rich amines and π‐accepting mesoionic carbenes. Naphthyl‐substituted carbenes promote locally excited phosphorescence with vibronic structure, whereas electron‐rich amides combined with electron‐poor carbenes favor ...
Felix León, Changfeng Si, Chenfei Li, Adisak Thanetchaiyakup, Thomas V. Papineau, Denis Jacquemin, Eli Zysman‐Colman, Han Sen Soo   +7 more
wiley   +1 more source