Development of a fluorescence-based sensor based on 1,8-naphthalimide for highly sensitive detection of phosgene.

Developing advanced sensing technologies for phosgene is critical for public safety and national security. Here, we report a novel fluorescent probe NP (abbreviation for naphthalimide-based probe) for the selective detection of phosgene. The sensor was synthesized through a substitution reaction between 1,8-naphthalimide with 1,4,7-triazacyclononane.

Novel design of near-infrared fluorescent sensors for the detection of Hg in living cells and real water samples.

Mercury sensing and imaging in the bio-system is essential for comprehending its toxicity and therapies. Based on the merocyanine scaffold, we designed and synthesized two novel near-infrared (NIR) fluorescent probes for detecting Hg. The release of chloro-substituted merocyanine structure on the probe CyHg-Cl enables fluorescence enhancement rapidly by introducing Hg.

An effective fluorescent probe for detection of phosgene based on naphthalimide dyes in liquid and gaseous phases.

A fluorescent probe was developed for the detection of phosgene based on 1,8-naphthalimide, of which o-diaminobenzene was used as the recognition moiety. The probe does not fluoresce due to nonradiative decay. The probe reacts rapidly with phosgene via an intramolecular cyclization reaction, which induces large fluorescence due to increased rigidity in the resulting molecule and a low detection limit (0.

Preparation of a laminated structured polyethyleneimine cryogel for carbon capture.

A cryogel solid amine adsorbent with a laminated structure has been prepared by crosslinking polyethylenimine (PEI) with ethylene glycol diglycidyl ether (EGDE) at a low temperature via liquid nitrogen treatment and freeze-drying. The effects of cryogenic treatment on the morphology of the cryogels were investigated. The liquid nitrogen treatment and freeze drying were critical to create the layered structure.

A two-photon fluorogenic probe based on a coumarin schiff base for formaldehyde detection in living cells.

A novel two-photon fluorogenic probe has been developed to detect formaldehyde with fast response, low cytotoxicity, and excellent selectivity. This probe exhibits a strong turn-on fluorescence response to formaldehyde under excitation at 370 nm and has been successfully applied to detect formaldehyde in living cells. Theoretical calculations at the B3LYP/6-31 + G(d,p), APFD/6-311++G, and APFD/6-311 + G(2d,p) levels of theory for the absorption and emission wavelengths of the probes were in agreement with those obtained experimentally.