Dual‐Mode Methanol Sensing via Smartphone‐Assisted Intelligent Sensor Based on Benzothiazole Donor–Acceptor Fluorophores DOI

Shijie Liao,

Wenwen Chen,

Zhengxing Zeng

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: May 8, 2025

Abstract Methanol, an alcohol solvent with significant roles in biology, industry, and the environment, can exert negative impacts on organisms environment when it is present excess. Therefore, developing efficient easy‐to‐operate methanol detection methods essential for providing timely information its concentration. In this work, four novel small molecule probes (DBZ‐H, DBZ‐Me, DBZ‐Bu, DBZ‐OMe) a D‐A‐A‐D structure are developed distinct fluorescence emission large Stokes shifts different organic solvents because of their conjugated push–pull system. Furthermore, nitrogen atom benzothiazole as anchor point, all dyes quantitatively detect through intensity wavelength modes. This specific ability to distinguish from other alcohols attributed strong hydrogen‐bonding interaction between methanol, well molecular size methanol. The limits 0.054%, 0.048%, 0.047%, 0.044% DBZ‐H, DBZ‐OMe, respectively. sensing mechanism confirmed spectroscopy theoretical calculations. Additionally, these applied biodiesel. Finally, dual‐mode convenient achieved assistance smartphone.

Language: Английский

Recent Progress of Molecular Design in Organic Type I Photosensitizers DOI
Tao Xiong, Yingchao Chen, Mingle Li

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 26, 2025

Abstract Photodynamic therapy (PDT) represents a high‐efficient and non‐invasive therapeutic modality for current future tumor treatments, drawing extensive attention in the fields of antitumor drug clinical phototherapy. In recent years, photosensitizer (PS) market PDT applications have expanded to address various cancers skin diseases. However, hypoxic environment within tumors poses substantial challenge capability reactive oxygen species‐dependent PDT. Consequently, researches increasingly focus from type II I mechanism, which relies on radical production with less or no dependence. Despite significant progress development PSs, holistic understanding regarding design principles these molecules remains elusive. Specifically, electron transfer‐mediated are extensively studied years but is insufficiently addressed existing reviews. This review systematically summarizes advancements molecular rationales organic categorizing them into three key fundamental strategies: modulating PS charge distribution, singlet forbidden via low triplet excited state, accelerating formation inducing transfer. aims offer valuable insights advancement anti‐hypoxia

Language: Английский

Citations

0
Dual‐Mode Methanol Sensing via Smartphone‐Assisted Intelligent Sensor Based on Benzothiazole Donor–Acceptor Fluorophores DOI

Shijie Liao,

Wenwen Chen,

Zhengxing Zeng

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: May 8, 2025

Abstract Methanol, an alcohol solvent with significant roles in biology, industry, and the environment, can exert negative impacts on organisms environment when it is present excess. Therefore, developing efficient easy‐to‐operate methanol detection methods essential for providing timely information its concentration. In this work, four novel small molecule probes (DBZ‐H, DBZ‐Me, DBZ‐Bu, DBZ‐OMe) a D‐A‐A‐D structure are developed distinct fluorescence emission large Stokes shifts different organic solvents because of their conjugated push–pull system. Furthermore, nitrogen atom benzothiazole as anchor point, all dyes quantitatively detect through intensity wavelength modes. This specific ability to distinguish from other alcohols attributed strong hydrogen‐bonding interaction between methanol, well molecular size methanol. The limits 0.054%, 0.048%, 0.047%, 0.044% DBZ‐H, DBZ‐OMe, respectively. sensing mechanism confirmed spectroscopy theoretical calculations. Additionally, these applied biodiesel. Finally, dual‐mode convenient achieved assistance smartphone.

Language: Английский

Citations

0