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Toward Rational Design of Carbon Nanodots with High photothermal efficiency for Tumor photothermal Therapy

Chinese Journal of Chemistry 2023年第16期41卷 1994-2001页

作者： Enshan Liu Jun Wu Tao Liang Bohan Zhang Zikang Tang Songnan Qu Joint Key Laborotory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoTaipaMacao SAR999078China Department of Physics and Chemistry Faculty of Science ond TechnologyUniversity of MacaoMacao SAR999078China MOE Frontier Science Centre for Precision Oncology University of MacaoMacao SAR999078China

Comprehensive Summary Carbon nanodots(CDs)with high photothermal performance are ideal candidates for tumor photothermal therapy(PTT).Herein,we investigated the photothermal performance of CDs synthesized from urea and citric acid via solvothermal method in dimethyl sulfoxide(DMSO)at different temperatures.photothermal conversion efficiency(PCE)of up to 61.3%was obtained in the CDs synthesized at 150℃(150-CDs),which is much better than the CDs synthesized at 180℃(180-CDs).By analyzing the morphologies,chemical structures,and absorption spectra of these CDs,we found that the photothermal effect of the CDs was due to the lattice vibration of their carbonized cores.

关键词： Carbon dots Morphology control photothermal efficiency Deep red Near-infrared Nanostructures Reaction mechanisms Sustainable chemistry

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High-Performance Natural Melanin/Poly(vinyl Alcohol-co-ethylene) Nanofibers/PA6 Fiber for Twisted and Coiled Fiber-Based Actuator

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Advanced Fiber Materials 2020年第2期2卷 64-73页

作者： Jiahui Chen Esfandiar Pakdel Wanjie Xie Lu Sun Mengyuan Xu Qiongzhen Liu Dong Wang College of Materials Science and Engineering Hubei Key Laboratory of Advanced Textile Materials&ApplicationWuhan Textile UniversityWuhan 430200China Australian Future Fibers Research and Innovation Center Institute for Frontier MaterialsDeakin University75 Pigdons RoadGeelongVIC 3220Australia

Twisted and coiled fiber-based actuators have drawn a great attention because their unique structure can provide mechanical response with the external thermal stimulus.Herein,an ultra-fast and light-weight twisted and coiled fiber-based actuator was designed based on a nature melanin/poly(vinyl alcohol-co-ethylene)(PVA-co-PE)nanofibers/PA6 composite fiber.In brief,PA6 was firstly coated by melanin/PVA-co-PE nanofibers using a spraying method,followed by the twisting and coat-ing the composite fiber to obtain the actuator.The excellent photothermal property of melanin contributed to the superior performance of the actuator,whereas the PVA-co-PE nanofibers was responsible for the uniform distribution of melanin and the enhanced mechanical property of the prepared-actuator.This unique design has led to the high performance of the melanin/NFs/PA6 fiber-based actuator,whose torsion actuation can reach to 14,000 rpm,and maximum tensile actuation was−6.36%at temperature difference of 40℃.In addition,the tensile stress of PA6/NFs/melanin fiber was about four times higher than PA6 filaments.Owing to the simple and environmental-benign preparation method,as well as the excellent effi-ciency of twisted and coiled melanin/NFs/PA6 fiber-based actuator,this study highlights the facile design of the composite fiber for high-performance fiber-based actuators.This fiber-based actuator is promising for application in energy generator.

关键词： Fiber-based actuator photothermal efficiency Nanofibers Nylon

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