Crystal‐State Photochromism and Dual‐Mode Mechanochromism of an Organic Molecule with Fluorescence, Room‐Temperature Phosphorescence, and Delayed Fluorescence

2019 ◽  
Vol 131 (46) ◽  
pp. 16597-16602 ◽  
Author(s):  
Lili Huang ◽  
Lei Liu ◽  
Xianjiang Li ◽  
Huan Hu ◽  
Mingxing Chen ◽  
...  
Keyword(s):  
Organic Molecule ◽  
Room Temperature ◽  
Delayed Fluorescence ◽  
Dual Mode ◽  
Room Temperature Phosphorescence ◽  
Crystal State

scholarly journals Full-type photoluminescence from a single organic molecule for multi-signal temperature sensing

2021 ◽  
Author(s):  
Jing Ma ◽  
Yusheng Zhou ◽  
Haiyang Gao ◽  
Fangming Zhu ◽  
Guodong Liang
Keyword(s):  
Organic Molecule ◽  
Room Temperature ◽  
Delayed Fluorescence ◽  
Temperature Sensing ◽  
Room Temperature Phosphorescence

Full-type photoluminescence including concomitant fluorescence, delayed fluorescence, and room-temperature phosphorescence from a single organic molecule is used for multi-signal temperature sensing.

scholarly journals Regioisomeric Effect on the Excited-State Fate Leading to Room-Temperature Phosphorescence or Thermally Activated Delayed Fluorescence in a Dibenzophenazine-Cored Donor–Acceptor–Donor System

2021 ◽  
Author(s):  
Takumi Hosono ◽  
Nicolas Oliveira Decarli ◽  
Paola Zimmermann Crocomo ◽  
Tsuyoshi Goya ◽  
Leonardo Evaristo de Sousa ◽  
...  
Keyword(s):  
Excited State ◽  
Room Temperature ◽  
Delayed Fluorescence ◽  
Quantum Yields ◽  
Room Temperature Phosphorescence ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Donor Acceptor ◽  
Emission Behavior

Exploring design principle for switching thermally activated dealyed fluorescecne (TADF) and room temperature phosphorescence (RTP) is a fundamentally imporant research in developing triplet-mediated photofunctional organic materials. Herein systematic studies on the regioisomeric and substituents effects in a twisted donor–acceptor–donor (D–A–D) scaffold (A = dibenzo[a,j]phenazine; D = dihydrophenazasiline) on the fate of the excited state have been performed. The study revealed that the regiosiomerism clearly affects the emission behavior of the D–A–D compounds. Distinct difference in TADF, dual TADF & RTP, and dual RTP were observed, depending on the host used. Furthermore, OLED organic light-emitting diodes (OLEDs) fabricated with the developed emitters achieved high external quantum yields for RTP-based OLEDS up to 7.4%.

scholarly journals Thermally activated delayed fluorescence vs. room temperature phosphorescence by conformation control of organic single molecules

2019 ◽  
Vol 7 (22) ◽  
pp. 6616-6621 ◽  
Author(s):  
Przemyslaw Data ◽  
Masato Okazaki ◽  
Satoshi Minakata ◽  
Youhei Takeda
Keyword(s):  
Room Temperature ◽  
Single Molecules ◽  
Delayed Fluorescence ◽  
Room Temperature Phosphorescence ◽  
Time Resolved ◽  
Thermally Activated Delayed Fluorescence ◽  
Molecular Conformations ◽  
Thermally Activated ◽  
Luminescent Compound

The time-resolved photophysical analysis of a multi-color-changing mechanochromic luminescent compound has been disclosed, which reveals distinct different emission paths to boost TADF and RTP of the emitter depending on its molecular conformations.

Temperature-responsive conversion of thermally activated delayed fluorescence and room-temperature phosphorescence of carbon dots in silica

2020 ◽  
Vol 8 (17) ◽  
pp. 5744-5751 ◽  
Author(s):  
Yuqiong Sun ◽  
Jinkun Liu ◽  
Xiaoliang Pang ◽  
Xuejie Zhang ◽  
Jianle Zhuang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Delayed Fluorescence ◽  
Temperature Sensing ◽  
Room Temperature Phosphorescence ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Temperature Responsive ◽  
Potential Applications ◽  
First Time ◽  
Fingerprint Detection

The unique temperature-responsive afterglow characteristics of CDs was reported for the first time, which can meet multiple potential applications in rapid fingerprint detection, temperature sensing, and advanced temperature-responsive anti-counterfeiting and encryption.

Red‐Emitting Delayed Fluorescence and Room Temperature Phosphorescence from Core‐Substituted Naphthalene Diimides

2019 ◽  
Vol 25 (70) ◽  
pp. 16007-16011 ◽  
Author(s):  
Suman Kuila ◽  
Anaranya Ghorai ◽  
Pralok K. Samanta ◽  
Raja B. K. Siram ◽  
Swapan K. Pati ◽  
...  
Keyword(s):  
Room Temperature ◽  
Delayed Fluorescence ◽  
Room Temperature Phosphorescence ◽  
Naphthalene Diimides
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