Results 41 to 50 of about 9,678 (243)

Polyenes vs polyynes: Efficient pi-frame for nonlinear optical pathways

, 2019
The electronic and vibrational hyperpolarizabilities of polyenes NH2-(HC=CH)(n)-NO2 and polyynes NH2-(C=C)(n)- NO2 have been investigated. As the chain length increases, the first hyperpolarizabilities increase drastically for polyenes, while they ...
Suh, SB, Lee, JY, Kim, KS
core   +1 more source

Terminally substituted conjugated polyenes : synthesis and energy transfer properties [PDF]

, 2010
The present publication summarizes the results of our investigations on conjugated polyenes with different end groups. The spectroscopic data reveal the possibi~ity of a selective electronic end group excitation in the conjugated systems influenced by ...
Effenberger, Franz, Wolf, Hans Christoph
core   +1 more source

Crystal Facet‐Polysaccharide Matching in CFS‐P Nanocrystals Drives Fungal Uptake, Vacuole Destruction, and Selective Antifungal Activity

Advanced Science, EarlyView.
Facet‐engineered PVP‐capped CuFeSe2 nanocrystals exhibit potent, selective antifungal activity by strongly binding cell‐wall mannan, enabling vacuolar entry and organelle disruption. High‐index facets show superior mannan affinity, validated by theoretical calculations and experiments. CFS‐P induces vacuolar cavitation, mitochondrial abnormalities, and
Zhaohui Wang, Xiaojin Deng, Xujuan Huang, Yuhang Pan, Yao Qin, Lu Zhang, Le Xu, Tianyi Qin, Deteng Zhang, Yi Ma, Yalong Wang   +10 more
wiley   +1 more source

Radical-Mediated Heck-Type Alkylation: Stereoconvergent Synthesis of Functionalized Polyenes

, 2019
The stereospecific synthesis of polyenes is of great synthetic value. Disclosed herein is a new, efficient, stereoconvergent approach for the synthesis of functionalized polyenes via a radical-mediated Heck-type alkylation.
Xinxin Wu (1672492), Yunlong Wei (4600126), Xinxin Wu, Yunlong Wei, Hong Zhang (25820), Chen Zhu (445894), Hong Zhang, Chen Zhu   +7 more
core   +1 more source

Infrared spectroscopy of phytochrome and model pigments [PDF]

, 1990
Fourier-transform infrared difference spectra between the red-absorbing and far-red-absorbing forms of oat phytochrome have been measured in H2O and 2H2O. The difference spectra are compared with infrared spectra of model compounds, i.e. the (5Z,10Z,15Z)-
Gabriele Schmidt, Scheer, Hugo, Rüdiger, W., Rudolf Grimm, Friedrich Siebert, Wolfhart Rudiger, Schmidt, G., Siebert, F., Grimm, R., Hugo Scheer   +9 more
core   +1 more source

Research progress on the drug resistance mechanisms of Candida tropicalis and future solutions

Frontiers in Microbiology
Candida tropicalis is an important member of the non-Candida albicans species. It is closely associated with candidemia, especially common in neutropenic and critically ill patients. Drug-resistant C.
Huisheng Xiong, Rigetu Zhao, Shizhe Han, Zhilin Liu, Xin Zhang, Zelin Jia, Jiayu Cui, Yuhang Zhang, Xueli Wang   +8 more
doaj   +1 more source

Efficient Screening of Organic Singlet Fission Molecules Using Graph Neural Networks

Advanced Science, EarlyView.
A high‐throughput screening framework based on graph neural networks (GNNs) and multi‐level validation facilitates the identification of singlet fission (SF) candidates. By efficiently predicting excitation energies across 20 million molecules, and integrating TDDFT calculations, synthetic accessibility assessments, and GW+BSE calculations, this ...
Li Fu, Longfei Lv, Fan Zhang, Si Zhou, Weiwei Gao, Jijun Zhao   +5 more
wiley   +1 more source

A Cationic Supramolecule With Potent Antifungal Activity, Single‐Species Selectivity, and Strong Synergy With Echinocandins

Advanced Science, EarlyView.
We introduce a new membrane‐active antifungal design, Gua‐SMACS‐16, that exhibits high potency and single‐species selectivity for C. tropicalis while sparing other close species in the Candida genus. Moreover, when combining with caspofungin, a clinical antifungal drug inhibiting 1,3‐β‐glucan synthase, they exhibit ultra‐strong synergy across a panel ...
Tianjiao Dai, Adrielle Xianwen Chen, Eve Wai Ling Chow, Li Mei Pang, Jianguo Li, Chandra Shekhar Verma, Stefan H. Oehlers, Yue Wang, Ning Li   +8 more
wiley   +1 more source

Excipient Emulsion–Based Delivery Systems for Enhancing Carotenoid Bioavailability: Advances in Formulation and Gastrointestinal Fate

AgriFood: Journal of Agricultural Products for Food, EarlyView.
Excipient emulsion systems improve carotenoid solubilization, protect against degradation, and enhance gastrointestinal absorption through optimized formulation and digestion behavior. ABSTRACT Carotenoids are bioactive compounds that contribute to human health through antioxidant, provitamin A, and disease‐preventive effects.
Tugce Ceyhan, Elifsu Nemli, Esra Capanoglu, Merve Tomas   +3 more
wiley   +1 more source

The polyene macrolide antibiotics [PDF]

Postgraduate Medical Journal, 1979
Summary The mode of action of the polyene antibiotics is reviewed together with the effect of genetic and environmental factors on sensitive organisms. The future prospects of polyenes in the treatment of systemic mycoses are considered.
openaire   +2 more sources