methylene blue (Lumeblue / methylene blue MMX)

Synthesis and Photocatalytic Decolorization Performance of a THPP/TiO2/Ag@ACF Aerogel Multiphase Composite.

Wang Gang G, Wang Yu Y, Yang Yi Y, Cheng Zhihua Z et al.

Recoverable photocatalysts with broad optical response are of interest for practical water treatment. A 5,10,15,20-tetrakis(4-hydroxyphenyl)porphyrin (THPP)/TiO2/Ag composite was prepared hydrothermally and immobilized on activated carbon fiber (ACF) aerogel by silane-assisted dip coating. The design combined potential THPP photosensitization and Ag-mediated interfacial effects with TiO2 photocatalytic sites and an adsorptive, recoverable ACF support. Structural and spectroscopic characterization supported incorporation of the components and changes in optical response and emission behavior. Overall apparent methylene blue removal reached 88.7% under UV irradiation and 88.0% under xenon-lamp irradiation. The concentration profiles were approximately fitted using an apparent pseudo-first-order model. Increasing the number of immersion cycles did not further improve the photocatalytic performance. These results demonstrate adsorption-assisted dye removal using an immobilized multiphase composite. The proposed charge-transfer pathway is presented as a mechanistic interpretation rather than a directly established electronic configuration.

Easy access to the geminal coupling between unresolved prochiral methylene protons.

Norzagaray Elisa E, Montgomery James R D JRD, Adamski Wiktor W, Sinnaeve Davy D

For NMR analysis of molecular configuration and conformation, scalar and, especially, residual dipolar couplings between prochiral methylene protons are highly valuable. Yet, their measurement is often hindered by strong coupling. We present a new method, inverse PSYCHEDELIC, that overcomes this issue. Demonstrations are given on steroids and the neuropeptide proctolin.

Hybrid Multi-Biorecognition Laser-Scribed Graphene Platform for Electrochemical Detection of Insulin Resistance Biomarkers.

Rizalputri Lavita Nuraviana LN, Shetty Saptami Suresh SS, Martinez Mario Soto MS, Roux Eckaard Le EL et al.

Insulin resistance (IR) is a multifactorial metabolic condition that can precede type 2 diabetes, motivating integrated monitoring of complementary biomarkers associated with glucose-insulin homeostasis and adipose tissue dysfunction. Here, we present a hybrid multi-biorecognition laser-scribed graphene (LSG) electrochemical platform with four independently functionalized working electrodes for detecting glucose, insulin, adiponectin, and leptin. The platform combines glucose oxidase-mediated enzymatic sensing, a methylene-blue-labeled insulin aptamer, and antibody-based recognition for adiponectin and leptin. Each sensing channel showed concentration-dependent electrochemical responses in PBS and analyte-spiked 10% human serum. The glucose sensor retained comparable sensitivity in PBS and serum, while the insulin aptasensor and the adiponectin and leptin immunosensors remained responsive in the diluted biological matrix. A preliminary mixed-analyte study further showed that all four channels remained responsive in a common four-biomarker sample. Importantly, the four-analyte panel combines glucose and insulin, used in HOMA-IR, with adiponectin and leptin, which form the adiponectin-to-leptin ratio, demonstrating thcombines high surface area, good electrical conductivitye feasibility of integrating complementary biomarkers and distinct biosensing approaches side by side within a single multiplexed electrochemical platform, with potential for future application in early-stage insulin resistance assessment.

Correction to "ZnBr2-Assisted Br-Rich Regulation of Blue-Emitting CsPbBr3 Nanoplatelets Synthesized at Low Temperature".

Wen Zhi Z, Kang Yubin Y, Liang Guangbi G, Xu Meng M et al.