pH-Responsive L-Cysteine-conjugated Polydopamine Nanocarriers for Controlled Release of Emamectin Benzoate against <italic style="font-style: italic">Pieris brassicae</italic>

Kirna Devi; Sunil Kumar; Ishani Saini; Alka Rana; Rajender Kumar

doi:10.1007/s10118-026-3699-1

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pH-Responsive L-Cysteine-conjugated Polydopamine Nanocarriers for Controlled Release of Emamectin Benzoate against Pieris brassicae

RESEARCH ARTICLE | Updated：2026-08-03

- pH-Responsive L-Cysteine-conjugated Polydopamine Nanocarriers for Controlled Release of Emamectin Benzoate against Pieris brassicae
- pH-Responsive L-Cysteine-conjugated Polydopamine Nanocarriers for Controlled Release of Emamectin Benzoate against Pieris brassicae
- Chinese Journal of Polymer Science 2026年44卷页码：1-16
- Affiliations：
  
  a.Department of Chemistry and Chemical Sciences, School of Physical and Material Sciences, Central University of Himachal Pradesh, Dharamshala-176215, Himachal Pradesh, India
  b.Department of Animal Sciences, School of Life Sciences, Central University of Himachal Pradesh, Dharamshala-176215, Himachal Pradesh, India
- Author bio：
  
  rajender.cuhp@gmail.com
- Funds：
  
  Kirna Devi acknowledges the Ministry of Tribal Affairs for financial assistance for research work through National Fellowship for Scheduled Tribe (NFST) (No. 202223-NFST-HIM-00379). The authors express their sincere gratitude to the Central University of Himachal Pradesh for providing access to their research facilities for this study. We would also like to acknowledge MNIT Jaipur, IIT Jammu, IIT Delhi, and CU Jammu for providing the different characterization techniques.;The authors declare no interest conflict.Data will be made available on request from the corresponding author upon reasonable request.
- DOI：10.1007/s10118-026-3699-1
  中图分类号：
- 收稿：2026-02-02，
  
  录用：2026-04-04，
  
  网络首发：2026-08-03，
  
  纸质出版：2026-09-05
- Accepted：
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Devi, K.; Kumar, S.; Saini, I.; Rana, A.; Kumar, R. pH-Responsive L-cysteine-conjugated polydopamine nanocarriers for controlled release of emamectin benzoate against pieris brassicae. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3699-1

Kirna Devi, Sunil Kumar, Ishani Saini, et al. pH-Responsive L-Cysteine-conjugated Polydopamine Nanocarriers for Controlled Release of Emamectin Benzoate against Pieris brassicae[J/OL]. Chinese Journal of Polymer Science, 2026, 441-16. DOI: 10.1007/s10118-026-3699-1.
Devi, K.; Kumar, S.; Saini, I.; Rana, A.; Kumar, R. pH-Responsive L-cysteine-conjugated polydopamine nanocarriers for controlled release of emamectin benzoate against pieris brassicae. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3699-1 DOI：

Kirna Devi, Sunil Kumar, Ishani Saini, et al. pH-Responsive L-Cysteine-conjugated Polydopamine Nanocarriers for Controlled Release of Emamectin Benzoate against Pieris brassicae[J/OL]. Chinese Journal of Polymer Science, 2026, 441-16. DOI: 10.1007/s10118-026-3699-1. DOI：

摘要

Abstract

Biodegradable polymeric nanocarriers demonstrate significant potential for the controlled release of pesticides

offering a sustainable and efficient approach for agriculture. This study involves the synthesis of novel pH-responsive L-cysteine-conjugated polydopamine (PDC) nanospheres for the controlled release of emamectin benzoate (EMB). Using sustainable

in situ

polymerization

hydrophobic EMB was encapsulated within biodegradable polydopamine (PDA)

which was further conjugated with L-cysteine. The functionalized and encapsulated carriers were characterized using UV

visible spectroscopy

Fourier-transform infrared spectroscopy (FTIR)

thermogravimetric analysis (TGA)

zeta potential

field emission scanning electron microscopy (FE-SEM)

high-resolution transmission electron microscopy (HR-TEM)

and X-ray photoelectron spectrosc

opy (XPS). Both EMB@PDA and EMB@PDC nanospheres were assessed for their encapsulation efficiency and pH-responsive release of EMB. Under varying pH and temperature conditions

the maximum cumulative release of EMB was achieved at pH=3 and was further enhanced by temperature. Various kinetic models have shown that Fick’s diffusion controls the release process. EMB@PDC nanospheres exhibited excellent adhesion to plant surfaces and effectively protected against UV radiation

which reduced EMB loss through rainfall washout and photolytic degradation. In addition

EMB@PDC exhibited high insecticidal potency against

Pieris brassicae

. Hence

this integrative platform exemplifies an effective pesticide delivery system for promoting agricultural sustainability.

关键词

Keywords

references

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pH-Responsive L-Cysteine-conjugated Polydopamine Nanocarriers for Controlled Release of Emamectin Benzoate against Pieris brassicae

pH-Responsive L-Cysteine-conjugated Polydopamine Nanocarriers for Controlled Release of Emamectin Benzoate against Pieris brassicae

DOI：10.1007/s10118-026-3699-1

摘要

Abstract

关键词

Keywords

references