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Volatile compounds collected from human skins can involve a wide range of metabolic pathways in different sources such as secretions (sweat and oil) from eccrine, sebaceous or apocrine glands. Characteristic human body odors can be produced from apocrine glands mostly found in axillae, pubic and areolas. Alternatively, nonvolatile metabolites in secretions from the other glands …

A Novel Portable Device for Detection of COVID19 Related Samples Read More »

Guanidine has been known as an important building blocks for pharmaceutical and chemical industry, due to their broad spectrum of bioactivities. However, the synthesis of guanidine requires stoichiometric amounts of desulfurizing agents leading to toxic extra waste generation. Herein, we reported the first catalytic guanylation process which can be performed at room temperature in a …

A Mild Photocatalytic Synthesis of Guanidine from Thiourea under Visible Light Read More »

In this work, the preparation of novel calcium citrate (CaCit) nanoparticles (NPs) has been disclosed and the use of these NPs as “Trojan” carriers has been demonstrated. The concentration ratio between calcium ions and citrate ions was optimized, yielding spherical NPs with size in the range of 100–200 nm. Additionally, a fluorescent dye, fluorescein isothiocyanate …

Feeding Cells with a Novel “Trojan” Carrier: Citrate Nanoparticles Read More »

Hole-transport is an important process in electronic devices such as organic field-effect transistors (OFETs) and organic light-emitting diodes (OLEDs). However, the molecular structures required for hole-transporting materials in OFET and OLED applications are quite different. In this paper, we examined the effect of alkylation onto a disk-like shaped molecule both in OFET and OLED devices. …

Synthesis, characterization, and hole-transporting properties of benzotriazatruxene derivatives Read More »

A new thread-based platform was developed for colorimetric detection of nitrite based on a modified Griess assay. Cellulose thread was functionalized with a p-aminobenzoyl group and impregnated with chromotropic acid as a coupling reagent. The reactions including diazotization and coupling reaction occurred along the length of the thread and a pink colored band was produced …

Thread-based platform for nitrite detection based on a modified Griess assay Read More »

In this work, we report for the first time AuNPs reduced/stabilized/capped with modified para-aminobenzoic acid-quat188-pullulan (PABA-QP) as excellent nanocarriers for delivery of doxorubicin to enhance the activity and safety of these systems. Spherical AuNPs@PABA-QP obtained by facile and green synthesis under optimum conditions were characterized by UV-VIS, TEM, EDS, SAED, XRD, ATR-FTIR and zeta-potential analyses …

Facile and green synthesis of pullulan derivative-stabilized Au nanoparticles as drug carriers for enhancing anticancer activity Read More »