Results 111 to 120 of about 19,091 (291)

Types of Phosphorescence [PDF]

Proceedings of the National Academy of Sciences, 1918
E L, Nichols, H L, Howes
openaire   +2 more sources

A Method for Optical Quantification of Local Oxygen Limitations in Multiphase Bioreactors

Biotechnology and Bioengineering, EarlyView.
ABSTRACT Spatial oxygen limitation is a major source of physiological stress and metabolic, scale‐dependent heterogeneity in aerobic bioprocesses. In gas‐liquid stirred tank reactors, oxygen availability is governed by hydrodynamics and mass transfer and is therefore inherently non‐uniform.
Ryan Rautenbach, Katharina Zörner, Jonas Barczyk, Marko Hoffmann, Ralf Takors, Michael Schlüter   +5 more
wiley   +1 more source

Dibenzyl Isophthalates as Versatile Hosts in Room Temperature Phosphorescence Host-Guest Systems

We report a series of dibenzyl isophthalates (DBIs) as versatile hosts for room-temperature phosphorescence (RTP) systems, leading to host-guest systems with quantum yields (QY) of up to 77 % or lifetimes of up to 21.0 s for the guest coronene d12 ...
Boris Johannes, Nachtsheim, Emanuel, Hupf, Martin, Molkenthin   +2 more
core   +1 more source

Distinct Ligand‐ and Metal‐Centered Phosphorescence in a Terbium Carbazolyl Complex

Chemistry – A European Journal, EarlyView.
Terbium and lanthanum carbazolide complexes show two distinct modes of luminescence: Strongly temperature‐dependent narrow‐line terbium emission could be induced. In addition, both the terbium and the lanthanum complexes show broad‐line interligand emission processes with excited states of microsecond life‐time.
Xiaofei Sun, Frederic Krätschmer, Julia Feye, Marcel Lukanowski, Dominik Graf, Sergei Lebedkin, Manfred Kappes, Florian Weigend, Peter W. Roesky, Alexander Hinz   +9 more
wiley   +1 more source

Changing N^C^O to C^N^O Coordination in Cyclometalated Pt(II) and Pd(II) Complexes Modulates Stability and Emission Characteristics: Toward Brighter Versatility

Chemistry – A European Journal, EarlyView.
A new class of cyclometalated metal complexes with pincer luminophores (C^N^O and N^C^O) is reported. They unite high photoluminescence efficiencies in liquid solutions at r.t. with tunable colors across the visible spectrum and convenient synthetic accessibility.
Joschua Lüke, Yokari Godinez‐Loyola, Alexander Hepp, Jutta Kösters, Cristian A. Strassert   +4 more
wiley   +1 more source

Phosphorescent Iridium Hydrazinonicotinic Acid (HYNIC) Complexes That Bind to Prostate Specific Membrane Antigen: Potential Photodynamic Therapy of Prostate Cancer

Chemistry – A European Journal, EarlyView.
A phosphorescent iridium(III) complex has been prepared with a 6‐hydrazinonicotinic acid (HYNIC) ligand tethered to a lysine‐ureido‐glutamatic acid pharmacophore, which binds to an enzyme, called prostate‐specific membrane antigen (PSMA), which is overexpressed in prostate cancer.
La'El Kimchi, Emily R. McGowan, Katherine A. Morgan, Jonathan M. White, Trevor A. Smith, Stacey E. Rudd, Paul S. Donnelly   +6 more
wiley   +1 more source

Dual-channel mechano-phosphorescence: a combined locking effect with twisted molecular structures and robust interactions

Light: Science & Applications
Organic mechanoluminescence materials, featuring dual emission and ultralong phosphorescence characteristics, exhibit significant potential for applications in real-time stress sensing, pressure-sensitive lighting, advanced security marking techniques ...
Zongliang Xie, Zhu Mao, Hailan Wang, Yuxin Xiao, Xiayu Zhang, Tao Yu, Zhongfu An, Wei Huang   +7 more
doaj   +1 more source

Phosphorescence of Heavy, T‐Shaped Pnictogen Trisamides in Solution at Room Temperature in the Near‐Infrared II Region

Chemistry – A European Journal, EarlyView.
The unique photophysical properties of heavy T‐shaped Sb and Bi trisamides are reported. A ligand‐to‐pnictogen charge‐transfer excitation from a redox‐active NNN pincer to a vacant pnictogen p‐orbital populates a triplet state that emits in the highly desirable NIR‐II region, with lifetimes up to the µs range.
Katharina L. Deuter, Sotirios Pavlidis, Rainer F. Winter, Peter Coburger, Josh Abbenseth   +4 more
wiley   +1 more source

Synthesis and Functional Properties of Fluorinated Phosphonate‐Substituted Porphyrins: Excellent Photosensitizers and Robust Precursors for Photoactive Langmuir–Schaefer Films

Chemistry – A European Journal, EarlyView.
This is a comprehensive study of new family of high functionalized meso‐tetraarylporphyrins. A synthetic approach to phosphonate‐substituted fluorinated porphyrins was developed. These compounds were investigated with respect to singlet oxygen generation and photostability.
Azhar Kechiche, Cyrille Monnereau, Chantal Andraud, Alla Bessmertnykh‐Lemeune, Yoann Rousselin, Andrey V. Cheprakov, Elizaveta V. Ermakova, Alexandra I. Zvyagina, Habib Nasri   +8 more
wiley   +1 more source

Clustering-Triggered Efficient Room Temperature Phosphorescence from Nonconventional Luminophores

, 2019
Pure organic room temperature phosphorescence (RTP) and luminescence from nonconventional luminophores have gained increasing attention. However, it remains challenging to achieve efficient RTP from unorthodox luminophores, on account of the ...
Xin, Bin, Wang Zhang, Yuan, Yuanping, Yi, Taiping, Hu, Yunzhong, Wang, Shuyuan, Zheng, Yongming, Zhang   +6 more
core   +1 more source