Results 81 to 90 of about 5,737 (220)

Poly(2‐Oxazoline)‐Based Polyphotoacids: Synthesis, Solution Behavior, and Cellular Uptake of Multi‐Responsive Intracellular Transporters

Macromolecular Rapid Communications, EarlyView.
The ability of photoacids to increase their acidity in response to light irradiation (excited state proton transfer, ESPT) makes them attractive building blocks for the design of stimuli‐responsive copolymers. In this contribution, we present highly biocompatible polyphotoacids based on poly(2‐oxazoline)s bearing 1‐hydroxypyrene units. Low cytotoxicity,
Leonid I. Kaberov, Amod Godbole, Laura Klement, Sreevalsan Achikkulathu, Avinash Chettri, Benjamin Dietzek‐Ivanšić, Carsten Hoffmann, Felix H. Schacher   +7 more
wiley   +1 more source

(+)-CSA Catalyzed Multicomponent Synthesis of 1-[(1,3-Thiazol-2-ylamino)methyl]-2-naphthols and Their Ring-Closure Reaction under Ultrasonic Irradiation

Journal of Chemistry, 2016
New 1-[(1,3-thiazol-2-ylamino)methyl]-2-naphthols were obtained by condensation of 2-aminothiazole, aromatic aldehydes, and 2-naphthol in the presence of (+)-camphor-10-sulfonic acid ((+)-CSA) as an effective catalyst under ultrasound-promoted solvent ...
Emel Pelit, Zuhal Turgut
doaj   +1 more source

Enantioselective Iron/Bisquinolyldiamine Ligand-Catalyzed Oxidative Coupling Reaction of 2-Naphthols

Molecules, 2020
An iron-catalyzed asymmetric oxidative homo-coupling of 2-naphthols for the synthesis of 1,1′-Bi-2-naphthol (BINOL) derivatives is reported.
Lin-Yang Wu, Muhammad Usman, Wen-Bo Liu
doaj   +1 more source

Effect of molecular structure and hydrogen bonding on the fluorescence of hydroxy-substituted naphthalimides [PDF]

, 1999
Fluorescence properties of hydroxy-naphthalimides were studied in methylene chloride in the absence and the presence of hydrogen-bonding additives. The position of the HO-substituent only slightly affects the radiative rate, however, the triplet yield ...
Biczók, László, Valat, P., Wintgens, V.   +2 more
core   +1 more source

Photochromic carbazole photoinitiators for precision visible‐light photopolymerization

Polymer International, EarlyView.
New carbazole–naphthopyran derivatives were employed as visible‐light‐activated photoinitiators, enabling rapid and localized radical photopolymerization to produce well‐defined thin solid objects within minutes. Abstract Two carbazole derivatives, each incorporating a naphthopyran unit and an aromatic ketone, were synthesized and evaluated as ...
Mauro Magalhães, Céu M Sousa, José R Fernandes, Paulo J Coelho   +3 more
wiley   +1 more source

Synthesis and circularly polarized luminescence properties of BINOL-derived bisbenzofuro[2,3-b:3’,2’-e]pyridines (BBZFPys)

Beilstein Journal of Organic Chemistry, 2020
A series of optically active bisbenzofuro[2,3-b:3’,2’-e]pyridine (BBZFPy) derivatives was synthesized starting with the readily available (S)- and (R)-1,1’-bi-2-naphthols through a palladium-catalyzed multiple intramolecular C–H/C–H coupling as the key ...
Ryo Takishima, Yuji Nishii, Tomoaki Hinoue, Yoshitane Imai, Masahiro Miura   +4 more
doaj   +1 more source

Recent Advances and Perspectives in UL‐94 V‐0 Rated Flame‐Retardant Polycarbonate: Addressing Challenges Under Per‐ and Polyfluoroalkyl Substances Bans

Safety Science and Technology, EarlyView.
Based on the challenges and motivations of global PFAS bans, this review highlights recent advances in strategies achieving UL‐94 V‐0 flame retardancy in polycarbonate while maintaining critical comprehensive performances, offering perspectives for future R&D. ABSTRACT This review focuses on the recent advancements in the development of UL‐94 V‐0 rated
Ting Sai, Xiaodi Ye, Bingtao Wang, Juan Li, Xin Zhang, Zhenghong Guo, Siqi Huo, Pingan Song, Zhengping Fang   +8 more
wiley   +1 more source

Palladium-Catalyzed α-Arylation of Carboxylic Acids and Secondary Amides via a Traceless Protecting Strategy. [PDF]

, 2019
A novel traceless protecting strategy is presented for the long-standing challenge of conducting the palladium-catalyzed α-arylation of carboxylic aids and secondary amides with aryl halides.
Hartwig, John F, He, Zhi-Tao
core   +1 more source

Red era: Dyeing yak hair fibres red with in situ generated silver nanoparticles using silver nitrate and a flavonoid‐containing plant extract

Coloration Technology, EarlyView.
Abstract Plants and their extracts have been used for dyeing fabrics, skin and hair for thousands of years and have been experiencing a revival in the last years due to increasing health risks arising from oxidative hair dye precursors. We developed a novel two‐step method to dye keratin fibres based on in situ formed silver nanoparticles including a ...
Julia K. Hachmann, Jule M. Sauler, Charlotte Ruhmlieb, Volkmar Vill, Fabian Straske   +4 more
wiley   +1 more source

A New Nano Silica Gel Supported by Thionyl Chloride as a Solid Acid for the Efficient Diazotization of Aniline Derivatives: Application and Synthesis of Azo Dyes

E-Journal of Chemistry, 2012
A new nano silicagel supported by thionyl chloride as a solid acid was synthesized and used as a increasing the production yield of dye to affect the efficient diazotization of arylamines.
Mohammad Mirjalili, Fatemeh Zahed, Alireza Hassanabadi   +2 more
doaj   +1 more source