Fabrication of light-responsively controlled-release herbicide using a nanocomposite

Chen, Chao-Wen; Zhang, Guilong; Dai, Zhangyu; Xiang, Yuanjiang; Liu, Bin; Bian, Po; Zheng, Kang; Wu, Zhengyan; Cai, Dongqing

doi:10.1016/j.cej.2018.05.079

Cited by 99 publications

(66 citation statements)

References 36 publications

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“…Recent work [13] reported the development of a light-responsive controlled-release system, where particles produced using biochar, attapulgite, azobenzene, and amino silicon were used to encapsulate the herbicide glyphosate. Azobenzene was used as a light-stimulated trigger, since it has trans and cis isomers that can be transformed to each other under UV or visible light, consequently promoting release of the herbicide.…”

Section: Applications Of Stimuli-responsive Systems In Agriculturementioning

confidence: 99%

Development of stimuli-responsive nano-based pesticides: emerging opportunities for agriculture

et al. 2019

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Pesticides and fertilizers are widely used to enhance agriculture yields, although the fraction of the pesticides applied in the field that reaches the targets is less than 0.1%. Such indiscriminate use of chemical pesticides is disadvantageous due to the cost implications and increasing human health and environmental concerns. In recent years, the utilization of nanotechnology to create novel formulations has shown great potential for diminishing the indiscriminate use of pesticides and providing environmentally safer alternatives. Smart nano-based pesticides are designed to efficiently delivery sufficient amounts of active ingredients in response to biotic and/or abiotic stressors that act as triggers, employing targeted and controlled release mechanisms. This review discusses the current status of stimuli-responsive release systems with potential to be used in agriculture, highlighting the challenges and drawbacks that need to be overcome in order to accelerate the global commercialization of smart nanopesticides.

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Section: Applications Of Stimuli-responsive Systems In Agriculturementioning

confidence: 99%

Development of stimuli-responsive nano-based pesticides: emerging opportunities for agriculture

et al. 2019

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“…19,20 Therefore, many investigations on controlled stimuli-responsive release platforms have been conducted to enhance the utilization efficiency of pesticides. [21][22][23][24] Controlled stimuli-responsive release platforms provide advanced and intelligent controlled release of pesticides, where the platforms present responses to external stimuli (like pH, 25 temperature, 26 microbe, 23 and light 24 ), resulting in changes in their chemical or physical properties favoring the "on-demand" release of loaded pesticides. 5,7 Among these stimuli-responsive release systems, pH-responsive formulations might affect the growth of crops due to the introduction of acid or base; temperature and microbe responsive formulations displayed high energy-consumption and complex operation.…”

Section: Introductionmentioning

confidence: 99%

Novel fabrication of a yeast biochar-based photothermal-responsive platform for controlled imidacloprid release

et al. 2021

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“…The extensive utilization of pesticides in controlling weeds, pests and fungi greatly contributes to ensuring global agricultural productivity [ 1 , 2 , 3 ]. Nonetheless, excessive and repetitive use of pesticides has led to a series of adverse effects on environmental quality, safety of agricultural products and human health [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

“…Light-controlled CRFs have strong potential applications in agriculture, able to take advantage of the abundant natural sunlight radiation in open fields, and even for greenhouses with simulated sunlight or UV light equipment [ 18 ]. Several light-responsive groups have been developed for this purpose, including coumarin [ 14 ], azobenzene [ 1 ], 2-nitrobenzyl [ 22 ] and spiropyran [ 25 ]. Among these light triggers, the coumarin-based platform is notably attractive because of the efficient photorelease ability and strong fluorescence property [ 26 , 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

Coumarin-Containing Light-Responsive Carboxymethyl Chitosan Micelles as Nanocarriers for Controlled Release of Pesticide

et al. 2020

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Currently, controlled release formulations (CRFs) of pesticides in response to biotic and/or abiotic stimuli have shown great potential for providing “on-demand” smart release of loaded active ingredients. In this study, amphiphilic biopolymers were prepared by introducing hydrophobic (7-diethylaminocoumarin-4-yl)methyl succinate (DEACMS) onto the main chain of hydrophilic carboxymethylchitosan (CMCS) via the formation of amide bonds which were able to self-assemble into spherical micelles in aqueous media and were utilized as light-responsive nanocarriers for the controlled release of pesticides. FTIR and NMR characterizations confirmed the successful synthesis of the CMCS-DEACMS conjugate. The critical micelle concentration (CMC) decreased with the increase in the substitution of DEACMS on CMCS, which ranged from 0.013 to 0.042 mg/mL. Upon irradiation under simulated sunlight, the hydrodynamic diameter, morphology, photophysical properties and photolysis were researched by means of dynamic light scattering (DLS), transmission electron microscopy (TEM), UV-vis absorption spectroscopy and fluorescence spectroscopy. Moreover, 2,4-dichlorophenoxyacetic acid (2,4-D) was used as a model pesticide and encapsulated into the CMCS-DEACMS micelles. In these micelle formulations, the release of 2,4-D was promoted upon simulated sunlight irradiation, during which the coumarin moieties were cleaved from the CMCS backbone, resulting in a shift of the hydrophilic–hydrophobic balance and destabilization of the micelles. Additionally, bioassay studies suggested that this 2,4-D contained which micelles showed good bioactivity on the target plant without harming the nontarget plant. Thereby, the light-responsive CMCS-DEACMS micelles bearing photocleavable coumarin moieties provide a smart delivery platform for agrochemicals.

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Fabrication of light-responsively controlled-release herbicide using a nanocomposite

Cited by 99 publications

References 36 publications

Development of stimuli-responsive nano-based pesticides: emerging opportunities for agriculture

Development of stimuli-responsive nano-based pesticides: emerging opportunities for agriculture

Novel fabrication of a yeast biochar-based photothermal-responsive platform for controlled imidacloprid release

Coumarin-Containing Light-Responsive Carboxymethyl Chitosan Micelles as Nanocarriers for Controlled Release of Pesticide

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