Results 91 to 100 of about 30,730 (232)

Hydroquinone-Based Synthesis of Pd Nanostructures and the Interplay of Surface Capping, Reduction Kinetics, Attachment Diffusion, and Fusion

, 2021
The rational synthesis of nanostructured materials with desired properties calls for a thorough understanding of the growth mechanism. Here we report a mechanistic case study of Pd nanostructures synthesized by reducing a Pd­(II) precursor with ...
Anderson G. M. da Silva (11597531), Quynh N. Nguyen, Younan Xia, Ruhui Chen, Madeline Vara, Ruhui Chen (3916754), Anderson G. M. da Silva, Madeline Vara (1472692), Pedro H. C. Camargo (8340414), Pedro H. C. Camargo, Quynh N. Nguyen (11597534), Younan Xia (140957)   +11 more
core   +1 more source

Design and optoelectronic profiling of a semicrystalline thiophene–phenylene copolymer for advanced organic electronics

Polymer International, EarlyView.
A new semicrystalline copolymer, PTBT‐3OBu, was synthesized. Intramolecular S···O conformational locks induce high backbone planarity, promoting strong interchain coupling and molecular ordering in thin films, seen in an optical red shift. This synergy between planarity and semicrystalline morphology is promising for photovoltaic and electrochromic ...
Sandra Lúcia Nogueira, Silésia de Fátima Curcino da Silva, Giovani Bortolini Oliveira, Bruno Souza Zanatta, Thibaut Jarrosson, Françoise Serein‐Spirau, Alexandre Marletta, Raigna Augusta da Silva   +7 more
wiley   +1 more source

Comparison of antioxidant activity of extract of Green tea to commercial antioxidants in 2% hydroquinone cream

Journal of Medicinal Plants, 2005
Background: Recently, many researchers have been involved in finding means to prevent or delay deterioration by oxidative reactions in cosmetic preparations.
K Morteza-Semnani, M Saeedi, Z Nozadi
doaj  

ntimelanogenesis effect of ethyl acetate extract of avocado seeds (Persea americana Mill.) on B16F10 melanoma cells [PDF]

Journal of Pharmacy & Pharmacognosy Research
Context: Hyperpigmentation is frequently associated with ultraviolet radiation exposure. Natural tyrosinase inhibitors, such as catechin from avocado seeds (Persea americana Mill.), are increasingly studied due to their antioxidant and tyrosinase ...
Shalina Sebayang, Raendi Rayendra, Ietje Wientarsih, Bambang Pontjo Priosoeryanto   +3 more
doaj   +1 more source

Dihydroartemisinin Engages NQO1 and Promotes Ferroptosis‐Related Oxidative Stress in Non‐Small Cell Lung Cancer

Phytotherapy Research, EarlyView.
Dihydroartemisinin Engages NQO1 and Promotes Ferroptosis‐Related Oxidative Stress in Non‐Small Cell Lung Cancer. ABSTRACT Dihydroartemisinin (DHA), a bioactive derivative of Artemisia annua L. (AAL), has shown antitumor activity in several malignancies, including non‐small cell lung cancer (NSCLC).
Xiuli Guo, Gan Tao, Mini Zhang, Linzhi Han, Sisi Yan, Chunsheng Wang, Jianguo Zhang, Xiaowan Guo, Kehua Hu, Yan Gong, Qiuji Wu, Conghua Xie   +11 more
wiley   +1 more source

An update on the safety of hydroquinone

Hydroquinone has been used for years for multiple conditions, including melasma, post-inflammatory hyperpigmentation, dyschromia from photoaging, and solar lentigines.
Edwards, Katherine, Shivaram, Kavya, Mohammad, Tasneem F   +2 more
core   +1 more source

Mechanistic aspects of the tyrosinase oxidation of hydroquinone

, 2014
Contradictory reports on the behaviour of hydroquinone as a tyrosinase substrate are reconciled in terms of the ability of the initially formed ortho-quinone to tautomerise to the thermodynamically more stable para-quinone isomer. Oxidation of phenols by

core   +1 more source

Preparation of activated carbon from date stones as a catalyst to the reactivity of hydroquinone: Application in skin whitening cosmetics samples

Journal of Science: Advanced Materials and Devices, 2019
In this study, the authors report on the use of the date stones as a raw material for the production of activated carbon (AC) using the physical activation.
H. Hammani, F. Laghrib, A. Farahi, S. Lahrich, T. El Ouafy, A. Aboulkas, K. El Harfi, M.A. El Mhammedi   +7 more
doaj   +1 more source

Advancing Biomass Valorization via Electrocatalytic Oxidation: Design Principles, Emerging Challenges, and Future Perspectives

SusMat, EarlyView.
This review categorizes substrates for electrocatalytic biomass valorization by carbon chain length into C2–C3 alcohols, C5–C7 cyclic compounds, and Cn biopolymers. It identifies four universal catalyst design principles: optimizing intermediate adsorption, engineering synergistic multi‐type active sites, accelerating active‐site formation, and ...
Ruya Zhang, Shuaihu Jiang, Yijin Kang
wiley   +1 more source

Synthesis of Thermoplastic Copolyimides Derived from Isometric Hydroquinone Diphthalic Dianhydride

, 2015
A series of polyimides (PI) were prepared from 3,3',4,4′-hydroquinone diphthalic dianhydride(4,4′-HQDPA), 2, 2′,3,3′-hydroquinone diphthalic dianhydride (3,3′-HQDPA) with different ratios of the isomers and 4,4′-oxydianiline (4,4'-ODA) by the ...
Fang Xingzhong, Zhao Huiwen, Wang Wei, Chen Guofei, Li Xing, Zhang Hongfei   +5 more
core