Encapsulation studies and selective membrane permeability properties of self-assembly hollow nanospheres

Soft Matter ◽  
2011 ◽  
Vol 7 (3) ◽  
pp. 1018-1024 ◽  
Author(s):  
Wei Ha ◽  
Xian-Wei Meng ◽  
Quan Li ◽  
Min-Min Fan ◽  
Shu-Lin Peng ◽  
...  
Keyword(s):  
Membrane Permeability ◽  
Self Assembly ◽  
Hollow Nanospheres ◽  
Selective Membrane

Mathematical Modeling Of An Amperometric Glucose Sensor: The Effect Of Membrane Permeability And Selectivity On Performance

2012 ◽  
Author(s):  
Azila Abd. Aziz
Keyword(s):  
Mathematical Modeling ◽  
Transport Properties ◽  
Membrane Permeability ◽  
Glucose Sensor ◽  
Digital Simulation ◽  
Glucose Biosensor ◽  
Glucose Biosensors ◽  
Interference Reduction ◽  
Membrane Selectivity ◽  
Selective Membrane

Gangguan dari bahan kimia elektro–aktif seperti asid askorbik, asid urik dan asetaminofen adalah merupakan satu masalah bagi biosensor glukosa berasaskan peroksid. Kebanyakan kerja penyelidikan memfokuskan kepada penggunaan membran yang perm–selektif di antara elektrod dan komponen aktif sensor untuk menghilangkan masalah ini. Dalam kerja penyelidikan ini, satu model matematik telah dibina untuk mengkaji kesan kebolehtelapan dan kememilihan bagi prestasi biosensor glukosa berasaskan peroksid. Simulasi digital telah dijalankan menggunakan kaedah pembezaan terhingga. Seperti yang dijangka, kememilihan membran kepada peroksid memainkan peranan besar dalam mengurangkan gangguan. Namun begitu, model juga mencadangkan yang manipulasi sifat pengangkutan lapisan pelindung luar boleh juga menghasilkan keputusan yang memberangsangkan dalam mengurangkan gangguan. Kata kunci: Biosensor glukosa; model matematik; asetaminofen; pengganggu; sifat pengangkutan Interference from electro–active chemicals such as ascorbic acid, uric acid and acetaminophen can be a problem for peroxide based glucose biosensors. Most works focused on the employment of a perm–selective membrane sandwiched between the electrode and the active component of the sensor to overcome this problem. In this work, a mathematical model has been developed to study the effect of membrane permeability and selectivity on peroxide based glucose biosensor performance. Digital simulation was carried out using the finite difference method. As expected, membrane selectivity to peroxide played a major role in interference reduction. However, interestingly, the model also suggested that the manipulation of the transport properties of the protective outer layer would also result in acceptable interference reduction. Key words: Glucose biosensors; mathematical modeling; acetaminophen; interferents; transport properties

Multi-responsive hollow nanospheres self-assembly by amphiphilic random copolymer and azobenzene

Polymer ◽  
2019 ◽  
Vol 175 ◽  
pp. 235-242 ◽  
Author(s):  
Yihan Wang ◽  
Lizhi Hu ◽  
Qiang Yin ◽  
Kai Du ◽  
Taoran Zhang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Random Copolymer ◽  
Hollow Nanospheres

scholarly journals Hydrothermal Synthesis of TiO2 Hollow Nanospheres via Self-Assembly Process

2013 ◽  
Vol 25 (14) ◽  
pp. 7927-7930
Author(s):  
Hai-Jian Yang ◽  
Kai Shen ◽  
Qi-Hao Yang ◽  
Jin-Lin Hu ◽  
Hai-Sheng Qian
Keyword(s):  
Hydrothermal Synthesis ◽  
Self Assembly ◽  
Assembly Process ◽  
Hollow Nanospheres

The self-assembly and secondary structure of peptide amphiphiles determine the membrane permeation activity

RSC Advances ◽  
2014 ◽  
Vol 4 (58) ◽  
pp. 30654-30657 ◽  
Author(s):  
Rie Wakabayashi ◽  
Yuko Abe ◽  
Noriho Kamiya ◽  
Masahiro Goto
Keyword(s):  
Secondary Structure ◽  
Membrane Permeability ◽  
Self Assembly ◽  
The Self ◽  
Peptide Amphiphiles ◽  
Membrane Permeation ◽  
Related Peptide ◽  
Self Assembling

New GALA-related peptide amphiphiles were designed and the influence of their self-assembling propensity and the secondary structure on the membrane permeability was studied.

Facile synthesis of novel Roe-like TiO2 hollow nanospheres with mesoporous cavity for improved photocatalytic activity

2017 ◽  
Vol 10 (03) ◽  
pp. 1750028 ◽  
Author(s):  
Yan Zhu ◽  
Xiaoxia Yan ◽  
Yuanxin Ge ◽  
Shumin Wang ◽  
Dongmei Deng ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Self Assembly ◽  
Charge Separation ◽  
Synergistic Effects ◽  
Assembly Process ◽  
Hollow Nanospheres ◽  
Facile Synthesis

A facile approach was developed to synthesize novel Roe-like TiO2 hollow nanospheres via a template-assisted self-assembly process. These TiO2 nanospheres possessing mesoporous cavity manifest significantly improved photocatalytic activity owing to the synergistic effects of increased charge separation, more efficient use of the light and specific surface area.

scholarly journals Tuning the membrane permeability of polymersome nanoreactors developed by aqueous emulsion polymerization-induced self-assembly

Nanoscale ◽  
2019 ◽  
Vol 11 (26) ◽  
pp. 12643-12654 ◽  
Author(s):  
Spyridon Varlas ◽  
Jeffrey C. Foster ◽  
Panagiotis G. Georgiou ◽  
Robert Keogh ◽  
Jonathan T. Husband ◽  
...  
Keyword(s):  
Membrane Permeability ◽  
Emulsion Polymerization ◽  
Self Assembly ◽  
Primary Amines ◽  
Cross Linking ◽  
Membrane Modification ◽  
Aqueous Emulsion

Membrane modification of epoxy-functionalized enzyme-loaded polymersomes using a series of primary amines and cross-linking diamines of increasing hydrophobicity resulted in functional nanoreactors with tunable permeability.

Self-Assembly of Methyl Substituted Polyaniline Hollow Nanospheres in a Polyelectrolyte Solution

2014 ◽  
Vol 63 (12) ◽  
pp. 602-608 ◽  
Author(s):  
Mengqin Liu ◽  
Chunhua Luo ◽  
Rong Huang ◽  
Hui Peng ◽  
Yiting Wang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Hollow Nanospheres ◽  
Polyelectrolyte Solution

A TIME DEPENDENT STUDY FOR THE FORMATION OF ULTRASMALL Cs-AlMCM-41 HOLLOW NANOSPHERES

2021 ◽  
Vol 5 (1) ◽  
pp. 347-357
Author(s):  
Abdullahi Haruna ◽  
Sani Sadiq ◽  
Kabo S. Kamaluddeen
Keyword(s):  
Mesoporous Materials ◽  
Self Assembly ◽  
Negative Charge ◽  
Raw Materials ◽  
Hydrothermal Condition ◽  
Time Dependent ◽  
Hollow Nanospheres ◽  
Inorganic Species ◽  
Spherical Micelles ◽  
Mcm 41

Monitoring of the formation of ultrasmall Cs-AlMCM-41 nanospheres under hydrothermal condition has been performed. It showed that when the CTABr surfactant, silica and alumina were mixed, homogenization of raw materials was first taking place, where CTABr molecules first interacted with the inorganic species via self-assembly into helical rod-like micelles. Hydrolysis, condensation and polymerization of silica and alumina precursors were then initiated. In addition, the Cs+ cation also participated during the formation of MCM-41 structure where it counterbalanced the negative charge of the aluminosilicate surface. After 14 h, the aluminosilicate oligomers were produced and fully enclosed the spherical micelles. Further increasing the hydrothermal treatment to 24 h onwards, polycondensation silanol siloxane would take place leading to the emergence of well-defined and highly ordered MCM-41 structure. This study came up with a clear picture on the formation of Cs-AlMCM-41 hollow nanospheres in cationic-surfactant-templated. This suggested that similar studies for other mesoporous materials such as MCM-48 and MCM-50 under different conditions and approaches could also be explored

Self-assembly of poly(o-methoxyaniline) hollow nanospheres from a polymeric acid solution

2009 ◽  
Vol 20 (41) ◽  
pp. 415606 ◽  
Author(s):  
Jing Sui ◽  
Lijuan Zhang ◽  
Hui Peng ◽  
Jadranka Travas-Sejdic ◽  
Paul A Kilmartin
Keyword(s):  
Acid Solution ◽  
Self Assembly ◽  
Hollow Nanospheres ◽  
Polymeric Acid
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