Results 91 to 100 of about 19,091 (291)

Cucurbit[8]Uril Achieved Single‐Molecule Chiral Transfer to Supramolecular Circularly Polarized Luminescence

Advanced Science, EarlyView.
A single‐molecule cascade supramolecular system comprising L/D‐FPy, CB[8], and SC4AD serves as an efficient light‐harvesting platform. It facilitates cascade energy transfer and chiral transfer to acceptor dyes. Co‐assembly with a PVA matrix produces a multicolor solid film that exhibits enhanced luminescence dissymmetry factors (glum), enabling ...
Yongxue Li, Jie Wu, Weiheng Zhang, Hengzhi Zhang, Wei‐Lei Zhou, Yu Liu   +5 more
wiley   +1 more source

Fluorescence Tuning of Carbon Dots from Red to Blue via UV‐Induced Photochemical Etching

Advanced Science, EarlyView.
A UV‐driven photochemical process enables continuous color evolution of carbon dots from red to blue using a single irradiation parameter. Progressive photoetching restructures graphitic domains and surface states, allowing full visible‐spectrum emission control.
Nanzhi Zheng, Yuchen Yang, Jingwei Xu, Jincheng Gan, Yinuo An, Xinyu Li, Guohua Chen   +6 more
wiley   +1 more source

DETERMINATION OF THE ACCEPTOR MOLECULES CONCENTRATION IN THE TRIPLET STATE ON EXCITATION OF DONOR-ACCEPTOR PAIRS BY RECURRENT PULSES

Наука. Инновации. Технологии, 2022
Analysis of population and decay of excited states play an important role in the study of photophysical processes. Information on the accumulation of organic molecules in triplet state is contained in the phosphorescence buildup kinetics. The possibility
Natal’ya Vladimirovna Zhdanova, Andrey Valer’yevich Avdeev   +1 more
doaj  

Ligand engineering to achieve enhanced ratiometric oxygen sensing in a silver cluster-based metal-organic framework

Nature Communications, 2020
Incorporating dual fluorescence and phosphorescence into a single matrix is attractive for oxygen sensing, but material design is challenging. Here the authors achieve dual fluorescence-phosphorescence from a single linker chromophore in a silver ...
Xi-Yan Dong, Yubing Si, Jin-Sen Yang, Chong Zhang, Zhen Han, Peng Luo, Zhao-Yang Wang, Shuang-Quan Zang, Thomas C. W. Mak   +8 more
doaj   +1 more source

Trap Depth Modulation and Antenna Effect of Organic Ligands for Enhancing Rare‐Earth Long Persistent Luminescence

Advanced Science, EarlyView.
Different from the current research trends that mainly focus on optimizing a single color system, a universal organic–inorganic hybrid strategy is proposed, aiming to synergistically enhance the luminescent properties of red, green, and blue multi‐color inorganic long‐persistent phosphorescent materials by trap depth modulation and antenna effect of ...
Ting Tan, Nian Li, Bangmin Liu, Hao Wang, Xia Huang, Yuanjin Chen, Zhonghao Wang, Chaolong Yang   +7 more
wiley   +1 more source

Highly Efficient Circularly Polarized Near-infrared Phosphorescence in Both Solution and Aggregate

Circularly polarized phosphorescence (CPP) is a spin-forbidden radiative process with chiroptical activity. The CPP mechanism is far from comprehensively understood, mainly due to the limited examples of efficient triplet emission from small chiral ...
Ben Zhong, Tang, Qian, Wu, Zheng, Zhao, Parvej, Alam, Lixun, Zhu, Yong, Liu, Yu, Xiong, Dan, Liu, Wenjin, Wang, Zhan , Yang, Bo, Wu, Kaiwen, Wu, Shuai, Chang, Zijie, Qiu   +13 more
core   +1 more source

In Situ Confinement of 0D Halometallates Within Deep Eutectic Solvents: From Systematic Screening to Metal‐Tunable Luminescence for Anti‐Counterfeiting Eutectogels

Advanced Science, EarlyView.
We report photostable, photoluminescent deep eutectic solvents (DESs) powered by in situ‐formed zero‐dimensional (0D) halometallates. Stabilized by microenvironment‐controlling hydrogen bond acceptor (HBA) and donor (HBD) networks, these DESs exhibit vibrant, metal ion‐tunable emission (PLQY = 60.2%).
Jeesu Moon, Minkyu Jung, Woojin Jung, Jaeyune Ryu, Jae‐Seung Lee   +4 more
wiley   +1 more source

Supramolecular assembly activated single-molecule phosphorescence resonance energy transfer for near-infrared targeted cell imaging

Nature Communications
Pure organic phosphorescence resonance energy transfer is a research hotspot. Herein, a single-molecule phosphorescence resonance energy transfer system with a large Stokes shift of 367 nm and near-infrared emission is constructed by guest molecule alkyl-
Xiaolu Zhou, Xue Bai, Fangjian Shang, Heng-Yi Zhang, Li-Hua Wang, Xiufang Xu, Yu Liu   +6 more
doaj   +1 more source

Water‐Enabled Ultralong Full‐Color Organic Phosphorescence in Hydrogen‐Bonded Frameworks for 4D Encryption and Bio‐Imaging

Advanced Science, EarlyView.
Water‐induced quenching challenges organic RTP materials, but a counter‐intuitive strategy employs HOF to encapsulate carbonyl guests, where water functions as a structural reinforcer. This achieves water‐enhanced ultralong RTP with full‐color emission (blue to deep red), overcoming intracellular quenching for high‐signal cellular imaging, alongside 4D
Pengcheng Wu, Zenggang Lin, Lu Yang, Weisheng Liu   +3 more
wiley   +1 more source

Fast, Efficient, Narrowband Room-Temperature Phosphorescence from Metal-Free 1,2-Diketones: Rational Design and Mechanism

, 2023
We report metal-free organic 1,2-diketones that exhibit fast and highly efficient room-temperature phosphorescence (RTP) with high color purity under various conditions, including solutions. RTP quantum yields reached 38.2% in solution under Ar, 54% in a
Erika, Ou, Takuji, Ogawa, Mao, Komura, Koki, Kubo, Takumi, Ehara, Morihisa, Terasaki, Ken, Onda, Yosuke, Tani, Kiyoshi, Miyata, Yuya, Oshima, Shuji, Kimura   +10 more
core   +1 more source