Results 61 to 70 of about 4,426,538 (221)

Simple Vanilla Derivatives for Long-Lived Room-Temperature Polymer Phosphorescence as Invisible Security Inks

Research, 2021
Developing novel long-lived room-temperature polymer phosphorescence (RTPP) materials could significantly expand their application scope. Herein, a series of RTPP materials based on eight simple vanilla derivatives for security ink application are ...
Yongfeng Zhang, Zhonghao Wang, Yan Su, Yan Zheng, Wenji Tang, Chaolong Yang, Hailong Tang, Lunjun Qu, Youbing Li, Yanli Zhao   +9 more
doaj   +1 more source

Room-temperature phosphorescence from metal-free polymer-based materials

Cell Reports Physical Science, 2022
Summary: Room-temperature phosphorescence (RTP) has received extensive attention in recent years due to its various potential applications. Pure organic RTP materials may overcome the shortcomings of harsh preparation conditions and high toxicity ...
Yanxiang Gong, Jie Yang, Manman Fang, Zhen Li   +3 more
doaj   +1 more source

Room-Temperature Phosphorescence of Pure Axially Chiral Bicarbazoles

, 2022
Ultralong room-temperature phosphorescence (RTP) is greatly important in a series of applications, but obtaining RTP from metal-free organic materials is still an enormous challenge due to the spin-forbidden nature of triplet excitons.
Lang Qu (5623691), Haifeng Xiang (742398), Xiangge Zhou (742399), Zong-Xiang Xu (1765411), Peng Wu (210686), Jintong Song (5623688), Lizhi Fang (9955196), Cheng Yang (273624), Yanying Wang (1615096)   +8 more
core   +3 more sources

Phase Engineering of Atomically Precise Nanoclusters (APNCs) of Gold and Beyond

Advanced Materials, EarlyView.
Engineering the structural phase of materials is of paramount importance for both fundamental research and practical applications. In this Review, we summarize the recent progress in controlling the phases of atomically precise nanoclusters (APNCs) of gold, silver and copper, as well as bimetallic systems. The phase‐enabled material properties of APNCs
Yitong Wang, Avirup Sardar, Weijie Ji, Zhongyu Liu, Rongchao Jin   +4 more
wiley   +1 more source

Impact of Fabrication Processes of Small-Molecule-Doped Polymer Thin-Films on Room-Temperature Phosphorescence

Frontiers in Physics, 2022
The development of organic materials displaying room-temperature phosphorescence is a research field that has attracted more and more attention in the last years.
Heidi Thomas, Katherina Haase, Tim Achenbach, Toni Bärschneider, Anton Kirch, Felix Talnack, Stefan C. B. Mannsfeld, Sebastian Reineke   +7 more
doaj   +1 more source

Dual room-temperature phosphorescence derived from the reversible homolysis in the high proportion n-electron organic crystal. [PDF]

Smart Mol
[2,2′‐biisoindoline]‐1,1′,3,3′‐tetraone (4A2B) crystal with high n‐electrons undergoes photo‐induced reversible homolysis resulting in two room‐temperature phosphorescence (RTP). One of the 4A2B molecules responds strongly to 250 nm via fast intersystem crossing (ISC) processes among high‐lying excited states.
Huang J, Wang D, Wang D, Yao Q, Huangfu X, Yang G, Long S, Du J, Fan J, Peng X.   +9 more
europepmc   +2 more sources

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

Large‐Scale Determination of Frontier Orbital Energies of Disordered Small‐Molecule Organic Semiconductors Using Exciplex Emission Spectra

Advanced Materials, EarlyView.
ABSTRACT Accurately knowing the frontier orbital energies of the structurally disordered small‐molecule organic semiconductors that are used in optoelectronic devices such as organic light‐emitting diodes is required to rationally improve their performance. Here, we show that these energies can be deduced with a large accuracy from the peak energies of
Christian B. McDonald, Hiroki Tomita, Giacomo Cotelli, Louka L. Brüll, Nanno G. de Rooij, Lucas R.L. Norg, Milo Clément, Reinder Coehoorn   +7 more
wiley   +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