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Catalyst-derived hierarchy in 2D imine-based covalent organic frameworks.
Nanoscale
January 2025
Dept. of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, PA 18015, USA.
Identifying facile strategies for hierarchically structuring crystalline porous materials is critical for realizing diffusion length scales suitable for broad applications. Here, we elucidate synthesis-structure-function relations governing how room temperature catalytic conditions can be exploited to tune covalent organic framework (COF) growth and thereby access unique hierarchical morphologies without the need to introduce secondary templates or structure directing molecules. Specifically, we demonstrate how scandium triflate, an efficient catalyst involved in the synthesis of imine-based COFs, can be exploited as an effective growth modifier capable of selectively titrating terminal amines on 2D COF layers to facilitate anisotropic crystal growth.
View Article and Find Full Text PDFTraditional Chinese Medicine-Based Nanoformulations for Enhanced Photothermal Therapy of Cancer.
ACS Biomater Sci Eng
January 2025
Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, P. R. China.
Photothermal therapy (PTT) has shown promise in the ablation of small, unresectable tumors by boosting the tumor's temperature above 50 °C. However, the high local temperature-induced cancer cell necrosis could create severe local inflammation, which may deteriorate normal tissues and increase tumor spreading. Although mild photothermal therapy (MPTT) at 42-45 °C could avoid the undesired side effect to some extent with minimal nonspecific heat diffusion, the self-protective behavior of tumors during MPTT results in an unsatisfactory therapeutic effect.
View Article and Find Full Text PDFNovel metal-organic framework coated with chitosan-κ-carrageenan as a platform for curcumin delivery to cancer cells.
Int J Biol Macromol
January 2025
Department of Chemical and Biochemical Engineering, University of Western Ontario, London, ON N6A 5B9, Canada. Electronic address:
Metal-organic frameworks (MOFs) have shown great promise as pH-responsive drug delivery systems, with considerable potential for targeted cancer therapy. In this study, we synthesized a novel curcumin-loaded MOF, named UWO-2 (CUR@UWO-2), and developed its biocomposite form, CS-κ-Cr/CUR@UWO-2, by coating it with chitosan (CS) and κ-carrageenan (κ-Cr). Structural analysis through powder X-ray diffraction (PXRD) confirmed the successful synthesis of UWO-2 and the incorporation of CUR within the MOF structure.
View Article and Find Full Text PDFBifunctional lignin-based hydrogel membrane with enhanced structural stability for synergistic uranium uptake.
J Colloid Interface Sci
January 2025
College of Chemistry and Materials Engineering, Zhejiang A&F University, No. 666 Wusu Street, Hangzhou 311300 PR China. Electronic address:
Developing biomass-based adsorbents with superior uranium uptake performance is imperative yet challenging for the sustainable development of nuclear energy. Herein, we constructed a novel lignin-based adsorbent (DLP@PAO) with dual functional groups and enhanced structural stability via ingenious integration of lignin and polyamidoxime. The two-step modification strategy was innovatively employed to phosphorylate lignin, significantly enhancing the phosphorylation efficiency and achieving an over eight-fold increase in the U(VI) uptake capacity of lignin.
View Article and Find Full Text PDFDifferentiation of intrapancreatic accessory spleen from pancreatic neuroendocrine tumor using MRI R2.
Abdom Radiol (NY)
January 2025
Severance Hospital, Seoul, Republic of Korea.
Purpose: To evaluate the performance of R2* in distinguishing intrapancreatic accessory spleens (IPASs) from pancreatic neuroendocrine tumors (PNETs).
Methods: Two radiologists (R1 and R2) retrospectively reviewed the MRIs of 20 IPAS and 20 PNET patients. IPASs were diagnosed with uptake on 99mTc labeled heat-damaged red blood cell scintigraphy or characteristic findings on CT/MRI and ≥ 12 month-long-stability.
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