Search

Your search keyword '"Ju, Zhenghua"' showing total 148 results
Start Over Author "Ju, Zhenghua"
148 results on '"Ju, Zhenghua"'

8. Two-Photon Cellular and Intravital Imaging of Hypochlorous Acid by Fluorescent Probes That Exhibit a Synergistic Excited-State Intramolecular Proton Transfer–Intramolecular Charge Transfer Mechanism Enabling Near-Infrared Emission with a Large Stokes Shift

Author

Long, Ying, Liu, Junru, Ju, Zhenghua, Qi, Fujian, Tang, Wei, Yan, Shuai, Dai, Fang, Zhang, Shengxiang, and Zhou, Bo

Abstract

To develop highly effective molecular tools for intravital imaging of hypochlorous acid (HOCl), in this study, we initially designed two-photon hybrid fluorophores, SDPand P-SDP, by conjugating the classical dye 2-(2′-hydroxyphenyl)benzothiazole with the two-photon hydroxylphenyl-butadienylpyridinium fluorophore. The designed fluorophores exhibit a synergistic interaction between excited-state intramolecular proton transfer and intramolecular charge transfer mechanisms, enabling near-infrared (NIR) emission and significant Stokes shifts. Subsequently, using these fluorophores, we developed two HOCl fluorescent probes, SDP-SNand P-SDP-SN, by further incorporating N,N-dimethylthiocarbamate as a specific recognition group for HOCl. Toward HOCl, both SDP-SNand P-SDP-SNdemonstrate an ultrafast response (less than 3 s), NIR emission at wavelengths of 714 and 682 nm, and remarkable Stokes shifts of 303 and 271 nm, respectively. Leveraging these advantages in conjunction with their ability to cross the blood–brain barrier, the probes find successful application in two-photon cellular and intravital imaging of HOCl. This includes visualizing endogenous generation of HOCl in cellular models related to inflammation, hyperglycemia, and ferroptosis, as well as mapping in vivogeneration of HOCl within the brain and abdominal cavity using a murine model of systemic inflammation.

Published
2024
Full Text
View/download PDF

30. Achieving mechano-upconversion-downshifting-afterglow multimodal luminescence in Pr3+/Er3+ coactivated Ba2Ga2GeO7 for multidimensional anticounterfeiting.

Author

Pei, Pengxiang, Liu, Kui, Ju, Zhenghua, Wei, Ruiping, and Liu, Weisheng

Abstract

Luminescent materials play a vital role in information encryption and anti-counterfeiting applications due to their excellent optical performance. Unfortunately, many reported luminescent materials are based on a fixed excitation mode and mono-color output, resulting in a poor anti-counterfeiting effect. Therefore, it is still a challenging task to develop multimodal anti-counterfeiting materials with adjustable color, variable excitation patterns and multitemporal features, especially in a single matrix. In this work, a highly integrated multimodal Ba2Ga2GeO7:0.04Pr3+,0.08Er3+ material is reported, which can show color-tunable Downshifting Luminescence (DSL) (white and green), white Persistent Luminescence (PersL), green Upconversion Luminescence (UCL) and white Mechanoluminescence (ML). Based on these integrated performances, the as-obtained multimodal Ba2Ga2GeO7:0.04Pr3+,0.08Er3+ material is fabricated into an anticounterfeiting device, which can realize synchronous multidimensional information encryptions and anticounterfeiting using common tools (ultraviolet (UV) light, near-infrared (NIR) light and pen writing). The results indicate that these integrated features will be difficult to fake and show high-level security in the field of advanced anticounterfeiting. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

46. K+-Induced in situ self-assembly of near-infrared luminescent membrane material armored with bigger Yb(iii) complex crystallites.

Author

Chen, Wanmin, Tang, Xiaoliang, Dou, Wei, Ju, Zhenghua, Xu, Benhua, Xu, Wenxuan, and Liu, Weisheng

Subjects
IN situ microanalysis, LIGANDS (Chemistry), ALKALI metal ions, POLYMERIZATION, LUMINESCENCE
Abstract

A semi-rigid ligand could capture effectively Yb3+ ions to form a stable Yb3+ complex and provide a potential cavity to accommodate alkali metal ions. Only K+ ions could induce the Yb3+ complex to form a 1D coordination polymer and promote the in situ formation of an NIR membrane coated with bigger Yb3+ complex crystallites under mild conditions. [ABSTRACT FROM AUTHOR]

Published
2016
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results