Chemistry Researches

Chemistry Researches

شبیه سازی دینامیک مولکولی کوپلیمر سه تایی و بررسی تشکیل شبه مایسل زیست سازگار با استفاده از مدل دانه ـ درشت

نوع مقاله : مقاله پژوهشی

نویسندگان
1 شیمی فیزیک و محاسباتی، دانشکده علوم شیمی و نفت، دانشگاه شهید بهشتی، تهران، ایران
2 گروه شیمی فیزیک و محاسباتی ، دانشکده علوم شیمی و نفت، دانشگاه شهید بهشتی، تهران، ایران
10.22036/cr.2023.391833.1211
چکیده
تشکیل مایسل از مولکولهای فعال سطحی و پلیمرهای با بخش های مختلف آبدوست و آبگریز همواره جزو موضوعات مهم پژوهشی بوده است. در این مطالعه، فرآیند تشکیل مایسل برای یک کوپلیمر سه تایی پلی اتیلن گلایکول-پلی کاپرولاکتون-پلی اتیلن ایمین توسط شبیه سازی دینامیک مولکولی در مقیاس دانه درشت توسط میدان نیروی مارتینی مورد بررسی قرار گرفته است. کارایی مدل دانه درشت در مطالعات قبلی برای بررسی فرآیندهای این چنینی به اثبات رسیده است. برای این منظور، غلظت های متعددی از کوپلیمر در دمای بدن تهیه شد و در اثر شبیه سازی روند تشکیل مایسل از قبیل برهم کنش های الکترواستاتیکی و واندروالسی مورد بررسی قرار گرفت.از آنالیزهای متعددی جهت بررسی فرآیند تشکیل مایسل استفاده گردید. پس از حصول اطمینان از پایداری مایسل تشکیل شده، غلظت بحرانی برای کوپلیمر مورد مطالعه از طریق شبیه سازی بدست آمد که در محدوده کارهای قبلی آزمایشگاهی است. همچنین مکانیسم و نیروهای پیش برنده تشکیل مایسل مورد ارزیابی قرار گرفت.

چکیده تصویری

شبیه سازی دینامیک مولکولی کوپلیمر سه تایی و بررسی تشکیل شبه مایسل زیست سازگار با استفاده از مدل دانه ـ درشت
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Coarse-grained molecular dynamics simulation study of micelle formation for triblock copolymer

نویسندگان English

Mahdi Zarif 1
Pantea Azizi 2
Mohsen Mohammadzadeh-Zare 2
1 Depatment of physical and computational chemistry, chemistry, shahid beheshti university, tehran, iran
2 Physical and Computational chemistry, Chemistry department, Shahid Beheshti University, Tehran, Iran
چکیده English

The formation of micelles from surface-active molecules and polymers with different hydrophilic and hydrophobic parts has always been one of the important research topics. In this study, the micelle formation process for a ternary copolymer of polyethylene glycol-polycaprolactone-polyethyleneimine has been investigated by molecular dynamics simulation at coarse grain scale by Martini force field. The effectiveness of the coarse-grained model has been proven in previous studies to investigate such processes. For this purpose, several concentrations of the copolymer were prepared at body temperature and investigated by simulating the micelle formation process, such as electrostatic and van der Waals interactions. Several analyzes were used to investigate the micelle formation process. After ensuring the stability of the formed micelle, the critical concentration for the studied copolymer was obtained through coarse-grained molecular dynamics simulation, which is within the range of previous laboratory works. Also, the mechanism and driving forces of micelle formation were evaluated.

کلیدواژه‌ها English

coarse grain
copolymer
drug delivery
force field
micelles
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  • تاریخ دریافت 15 فروردین 1402
  • تاریخ بازنگری 15 تیر 1402
  • تاریخ پذیرش 13 مرداد 1402