Results 81 to 90 of about 128,004 (334)

Benzoyl‐Xanthenoxanthenes: Versatile Chromophores for Light‐Engaging Applications

Angewandte Chemie, EarlyView.
Oxidatively stable benzoyl‐fused peri‐xanthenoxanthene ribbons with NIR emission were synthesized. Their good spectral overlap enabled cascaded Förster resonance energy transfer (FRET) antennae in a nematic liquid crystal phase, achieving directional energy transfer.
Cristian De Luca, El Czar Galleposo, Rúben R. Ferreira, Chiara Puccinelli, Herwig Peterlik, Pradip Kumar Mondal, Laurens van Dam, Johannes C. B. Dietschreit, Yoshimichi Shimomura, Gen‐ichi Konishi, Davide Bonifazi   +10 more
wiley   +2 more sources

From planes to bowls: photodissociation of the bisanthenequinone cation

, 2018
We present a combined experimental and theoretical study of the photodissociation of the bisanthenequinone (C28H12O2) cation, Bq+. The experiments show that, upon photolysis, the Bq+ cation does not dehydrogenate, but instead fragments through the ...
Chen, Tao, Linnartz, Harold, Tielens, Alexander G. G. M., Wang, Ying, Zhen, Junfeng   +4 more
core   +1 more source

PAHs in protoplanetary disks: emission and X-ray destruction [PDF]

, 2012
We study the PAH emission from protoplanetary disks. First, we discuss the dependence of the PAH band ratios on the hardness of the absorbed photons and the temperature of the stars.
Acke, Acke, Armitage, Asplund, Augereau, Baes, Bianchi, Bjorkman, Chase, Chiang, Compiegne, Doucet, Draine, Draine, Dullemond, Dwek, Ercolano, F. Heymann, Fleck, Galliano, Geers, Gordon, Guhathakurta, Habart, Hayashi, Heymann, Jayawardhana, Juvela, Keller, Krijt, Lagage, Lucy, Mathis, Mattioda, Mattioda, Min, Min, Miroshnichenko, Misselt, Peeters, Preibisch, R. Siebenmorgen, Robitaille, Robitaille, Salama, Schräpler, Schutte, Sellgren, Siebenmorgen, Siebenmorgen, Siebenmorgen, Siebenmorgen, Siebenmorgen, Siebenmorgen, Stelzer, Tielens, Uchida, van den Ancker, Vinkovic, Youdin, Zubko   +60 more
core   +1 more source

Interstellar and Circumstellar PAHs [PDF]

Symposium - International Astronomical Union, 2000
ISO has shown that the mid–IR spectra of almost all sources are dominated by narrow emission features collectively known as the UIR bands. These bands are carried by a family of polycyclic aromatic hydrocarbon molecules containing about 50 C-atoms. Other classes of molecules such as C-chains as well as non-aromatic groups attached to the PAHs are much ...
Tielens, A.G.G.M., Hony, S., van Kerckhoven, C., Peeters, E.   +3 more
openaire   +4 more sources

Smart Nanoparticles Disrupting Energy Supply through Triple Mechanisms to Kill Tumors via Dual Disruption of Mitochondria and Lysosomes

Advanced Science, EarlyView.
This study introduces a biomimetic nanoplatform (MTCA@C) designed for precise cancer therapy. It targets mitochondria to induce dysfunction through photodynamic activation, while concurrently blocking mitophagy via lysosomal alkalinization. The platform further triggers methuosis, resulting in tumor cell death through vacuolization and energy pathway ...
Xiao Xu, Qiqing Huang, Yang Liu, Jinzhuo Liu, Deyi Yang, Yanni Song, Xin Han   +6 more
wiley   +1 more source

A Review on the Atmospheric Concentrations of Polycyclic Aromatic Hydrocarbons (PAHs) in Asia Since 2000 - Part II: Data from Developing Countries

Asian Journal of Atmospheric Environment, 2012
This review paper describes the ambient air PAH concentrations in different developing Asian countries, including China, Afghanistan, India, Malaysia, Turkey, Vietnam, Sri Lanka, Thailand and Cambodia.
Lakshmi Narayana Suvarapu , Young-Kyo Seo , Yoon-Chang Cha , Sung-Ok Baek   +3 more
doaj   +1 more source

Mapping PAH sizes in NGC 7023 with SOFIA [PDF]

, 2016
NGC 7023 is a well-studied reflection nebula, which shows strong emission from polycyclic aromatic hydrocarbon (PAH) molecules in the form of aromatic infrared bands (AIBs). The spectral variations of the AIBs in this region are connected to the chemical
Berné, O., Candian, A., Croiset, B. A., Tielens, A. G. G. M.   +3 more
core   +5 more sources

From the Gut to the Brain: Microplastic‐Associated Neurovascular Dysfunction and Implications for Stroke Risk

Advanced Science, EarlyView.
Chronic oral exposure to microplastics may disrupt gut microbiota homeostasis and intestinal barrier integrity, potentially engaging the gut–brain axis and systemic inflammatory responses. These alterations may be associated with impaired blood–brain barrier function, cerebral microvascular dysfunction, and enhanced endothelial inflammation, pro ...
Hongxing Wang, Yujiao He, Pei Zou, Xiaoyi Wang, Gang Peng, Xiangying Deng   +5 more
wiley   +1 more source

Efficient calculation of van der Waals dispersion coefficients with time-dependent density functional theory in real time: application to polycyclic aromatic hydrocarbons

, 2007
The van der Waals dispersion coefficients of a set of polycyclic aromatic hydrocarbons, ranging in size from the single-cycle benzene to circumovalene (C66H20), are calculated with a real-time propagation approach to time-dependent density functional ...
Alberto Castro, Flower D. R., Giacomo Mulas, Giuliano Malloci, London F., Mahanty J., Miguel A. L. Marques, Parsegian V. A., Siegel G. J., Silvana Botti   +9 more
core   +3 more sources

Cell‐Free DNA‐Based Theranostics for Inflammatory Disorders

Advanced Science, EarlyView.
Summary on the dual potential of cfDNA as biomarkers and therapeutic targets for inflammatory disorders. Figure was created with BioRender.com. ABSTRACT Inflammatory disorders are characterized by immune‐mediated inflammatory cascades that can affect multiple organs.
Jiatong Li, Yumei Wang, Xiaoxi Fan, Miao Xu, Jiawen Li, Wenfei Tan, Jianxiang Zhang, Heran Li   +7 more
wiley   +1 more source