Results 121 to 130 of about 21,624 (203)

Room-Temperature Phosphorescence of Quinine Sulfate in PVA Films: The Effect of Humidity

Optics
We report the first observation of room-temperature phosphorescence (RTP) of quinine sulfate (QS) in poly (vinyl alcohol) (PVA) films. Steady-state and time-gated measurements were performed to characterize the phosphorescence spectra, anisotropies, and ...
Agnieszka Jablonska, Bong Lee, R. Max Petty, Danh Pham, Rajveer Sagoo, Trang Thien Pham, Zygmunt Gryczynski, Ignacy Gryczynski   +7 more
doaj   +1 more source

Challenges and Opportunities in Machine Learning for Light‐Emitting Polymers

Macromolecular Rapid Communications, EarlyView.
The performance of light‐emitting polymers emerges from coupled effects of chemical diversity, morphology, and exciton dynamics across multiple length scales. This Perspective reviews recent design strategies and experimental challenges, and discusses how machine learning can unify descriptors, data, and modeling approaches to efficiently navigate ...
Tian Tian, Yinyin Bao
wiley   +1 more source

Machine learning‐driven advances in carbon‐based quantum dots: Opportunities accompanied by challenges

Responsive Materials, EarlyView.
Machine learning provides a unifying framework to connect structure, fluorescence properties, and applications of carbon‐based quantum dots. This review highlights how data‐driven strategies enable fluorescence regulation, reveal underlying mechanisms, and accelerate the rational design of functional carbon dots.
Liangfeng Chen, Siwei Yang, Xiangqian Cui, Ziheng Liu, Hang Wang, Yongqiang Li, Peng He, Miao Wang, Guqiao Ding   +8 more
wiley   +1 more source

Enabling Aqueous Phase Long‐lived Deep‐blue Phosphorescence With Layered Double Hydroxide

Advanced Science
Aqueous‐phase phosphors are of utmost importance for a myriad of applications. However, the emission wavelengths of the current aqueous organic room‐temperature phosphorescent (RTP) materials are limited to green and red bands, while the blue part is ...
Qian Chen, Peisheng Cao, Peng Wu
doaj   +1 more source

Advanced design and application for viologen‐based redox devices with customizable functionalities

Responsive Materials, EarlyView.
This review examines viologen‐based materials with customizable functionalities achieved through molecular engineering strategies such as side‐chain modification and composite formation. It emphasizes their utility in electrochromic devices, multicolor displays, and energy storage, while discussing stability challenges and outlining future development ...
Yuxin Chang, Yuchen Ge, Luzi Wang, Jinqian Mao, Zhongzhi Qu, Na Li, Dongqi Liu, Jiupeng Zhao   +7 more
wiley   +1 more source

Inter‐/Intramolecular π‐Stacking in a Benzannulated NCN‐Coordinated Pd(II) Monomer and Dimer Pair: Synthesis, Structure, and Photophysics

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
A cyclometalallated palladium complex and its acetate‐bridged dinuclear analogue, both supported by 1,3‐bis(2‐quinolinyl)benzene ligands, are described. The mononuclear (but not the dinuclear) complex is weakly phosphorescent in the deep red region of the spectrum in solution at room temperature, and both compounds phosphoresce in frozen media at 77 K ...
Esteban Garcia, Robert J. Ortiz, J. A. Gareth Williams, David E. Herbert   +3 more
wiley   +1 more source

Tuning the Photochemistry of Entatic State Model Systems

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
We present the photochemistry of the entatic state model [Cu(DMEGqu)2]+/2+, a copper guanidino‐quinoline complex pair. By transient IR and UV/Vis spectroscopy, we obtained the lifetimes of the different excited states. We show that the structural effect of the guanidine tunes the photochemistry of this entatic state model.
Alexander Hoffmann, Julia Stanek, Stefan Hofmann, Michael Rampp, Benjamin Maerz, Benjamin Grimm‐Lebsanft, Melissa Kindler, Tobias Seitz, Michael Rübhausen, Wolfgang Zinth, Sonja Herres‐Pawlis   +10 more
wiley   +1 more source

The investigation of interactions in the excited state of flavins using time-resolved spectroscopy [PDF]

In paper I the results obtained with a very short (3 nsec) intense laser pulse as excitation source are described. This pulse excites such a large amount of flavin molecules into higher excited singlet and triplet states that changes in absorption of ...
Visser, A.J.W.G.
core   +1 more source

Alloxazine derivatives as multifunctional agents for photodynamic therapy, cancer cell imaging, and cell proliferation inhibition

Photochemistry and Photobiology, EarlyView.
Alloxazine photosensitizers, molecularly engineered through sugar conjugation and methoxy substitution to enhance solubility, photodynamic potency, and fluorescence, enable image‐guided photodynamic therapy while inhibiting cancer cell growth in the absence of photoactivation.
Rubej R. Khan, Sourav Kanti Seth, Reshma Mathew, Nitza V. Falcón‐Cruz, Chris Acquah, Steffen Jockusch, Liraz Levi, Carlos E. Crespo‐Hernández   +7 more
wiley   +1 more source

Room temperature phosphorescence materials based on small organic molecules: Design strategies and applications

Responsive Materials
Room‐temperature phosphorescence (RTP) materials have attracted significant attention due to their applications in various fields such as information storage and encryption, organic light‐emitting diode (OLED), sensing, lighting and display, biological ...
Meixia He, Cong Ding, Hexiang Guo, Quan Li   +3 more
doaj   +1 more source