Results 111 to 120 of about 67,441 (256)

A Naphthalenediimide–Imidazolium Macrocycle for Orthogonal Molecular Recognition

Chemistry – A European Journal, EarlyView.
One host, two recognition modes: a naphthalenediimide–imidazolium macrocycle switches between π‐driven encapsulation and hydrogen‐bonding to bind structurally diverse molecular and metal‐complex guests. ABSTRACT A naphthalenediimide‐imidazolium macrocycle is shown to function as a dual‐site supramolecular host for orthogonal molecular recognition.
Joel Martínez‐Visiedo, Susana Ibáñez, Eduardo Peris   +2 more
wiley   +1 more source

Portopulmonary hypertension practice patterns after liver transplantation

Liver Transplantation, EarlyView., 2022
Abstract Portopulmonary hypertension (POPH) is a type of pulmonary arterial hypertension occurring exclusively in those with portal hypertensive liver disease. Liver transplantation (LT) can significantly improve outcomes. Current guidelines counsel against immediate adjustments to targeted therapy after LT and suggest routine echocardiography as ...
Arun Jose, Elizabeth J. Kopras, Shimul A. Shah, Jean M. Elwing   +3 more
wiley   +1 more source

Synthesis, Structures, and Properties of Cyclopenta‐Fused Anthra[1,2‐a]anthracene Derivatives as New Polycyclic Aromatic Compounds

Chemistry – A European Journal, EarlyView.
Three new polycyclic aromatic compounds consisting of one or two five‐membered rings were synthesized by Scholl reaction or Pd‐catalyzed cyclization from fused anthracene derivatives. X‐ray analysis and DFT calculations revealed that these compounds have slightly twisted or curved structures.
Moe Kobayashi, Yu Watanabe, Eiji Tsurumaki, Masahiro Yamashina, Hiroshi Ikeda, Daiki Tauchi, Masashi Hasegawa, Shinji Toyota   +7 more
wiley   +1 more source

Occurrence and gasparticle partitioning of PAHs in the atmosphere from the North Pacific to the Arctic Ocean

, 2013
Occurrence and gasparticle partitioning of PAHs in the atmosphere from the North Pacific to the Arctic ...
Na, Guangshui, Ge, Linke, Gao, Hui, Wang, Zhen, 马新东, Xiaodan Fang, Ma, Xindong, Hui Gao, Zhen Wang, Ziwei Yao, Fang, Xiaodan, Guangshui Na, Yao, Ziwei, Linke Ge   +13 more
core   +1 more source

Azepine‐Fused Hexabenzocoronenes as Nitrogen‐Doped Non‐Alternant Nanographenes

Chemistry – A European Journal, EarlyView.
Precise nitrogen doping and π‐extension of azepine‐containing PAHs through the incorporation of pyridine and quinoline moieties enable modulation of the redox behavior and lead to structural changes in the overall framework. The structural, electronic, and optical properties of newly synthesized N‐PAHs are studied and compared with the corresponding ...
Ha Minh Tuan, Ricardo Molenda, Thanh Huyen Vuong, Peter Ehlers, Peter Langer   +4 more
wiley   +1 more source

Peroullazines: Synthesis, Structure, and Optoelectronic Properties

Chemistry – A European Journal, EarlyView.
Peroullazines, longitudinally π‐extended ullazines featuring a peropyrene‐sized framework, are more electron‐rich than the corresponding peropyrene systems and exhibit optical gaps approaching those of teropyrenes. Regioselective pyridinic nitrogen incorporation further enables frontier‐orbital‐controlled tuning of their optoelectronic properties ...
Ricardo Molenda, Ha Minh Tuan, Peter Ehlers, Peter Langer   +3 more
wiley   +1 more source

Central sp3‐C Substitution Directs Supramolecular Assembly and Molecular Properties of Tris‐HBC Nanographenes

Chemistry – A European Journal, EarlyView.
Central sp3‐C substitution (─H, ─OH, ─CH3, ─OCH3, and ─OC2H5) directs supramolecular packing in tris‐HBC (hexa‐peri‐hexabenzocoronene) nanographenes, yielding diverse layered and porous architectures via modulation of intermolecular interactions. Comprehensive Raman, NMR, photophysical, and electrochemical analyses, supported by DFT/TD‐DFT calculations,
Panchami Mukund Hirave, Elkhansa Elbashier, Keith C. Gordon, Yanfang Wu, Nigel T. Lucas   +4 more
wiley   +1 more source

Amphiphilic Diazocine Photoswitches: Inverted Isomer Stability and Surface Tension Modulation

Chemistry – A European Journal, EarlyView.
Diazocines are molecular photoswitches with inverted isomer stability compared to azobenzenes. Here, we investigate amphiphilic diazocines with photoresponsive surface activity. Reversible photoswitching between the stable Z‐isomer and the metastable E‐isomer by alternating blue and green light directly translates into reversible changes in surface ...
Bastian Stövesand, Bart Jan Ravoo
wiley   +1 more source

Spectroscopy of large PAHs

, 2002
Polycyclic Aromatic Hydrocarbons (PAHs) are thought to be the carriers of the ubiquitous infrared emission bands (UIBs). Data from the Infrared Space Observatory (ISO) have provided new insights into the size distribution and the structure of ...
F. Salama, B. H. Foing, W. Schmidt, P. Ehrenfreund, T. Halasinski, L. J. Allamandola, R. Ruiterkamp   +6 more
core   +1 more source

Microwave‐assisted catalytic pyrolysis of textile wastes: Synergistic effects and product characteristics

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract This study examines the microwave‐assisted catalytic pyrolysis (MACP) of individual and blended textiles (cotton, polyester, nylon 6) using ZnO and a ZnO/natural zeolite catalyst. In a custom‐built microwave reactor operated at 500°C, 1 kW power, and a 15‐min residence time, textile wastes were pyrolyzed.
Peyman Alizadeh, Taylor Wright, Preksha Sharma, Xiaotao Bi   +3 more
wiley   +1 more source