探討二氧化矽粒子之親疏水性在疏水基板上之自組裝研究

吳易真

doi:10.6845/NCHU.2013.00857

3.238.107.166，Hello！

Close
Search Quick Search Advanced Search Publication Search	Personal Service Member Login Searching History Use Bonus Card SYMSKAN
Browse Browse by University of Graduate Thesis Browse by Pinyin of Graduate Thesis Browse by Conference Proceedings Topic Browse by Conference Proceedings Publisher Browse by Pinyin of Conference Proceedings Browse by eBook Category Browse by eBook Topic Browse by eBook Publisher
Customer Services Authorize Airiti Recommend a Journal

Search Symbol (Half-width)	Description of Search Symbols
Space	"AND" indicates the intertwining of key terms used in a search
Double Quotation Marks ("") ( " " )	Double quotation marks indicate the beginning and end of a phrase, and the search will only include terms that appear in the same order of those within the quotations. Example: "image process" ： " image process "
?	Indicates a variable letter. Entering two ? will indicate two variable letters, and so on. Example: "Appl?", search results will yield apple, apply… e , appl y … ( (often used to English word searches) )
*	Indicates an unlimited number of variable letters to follow, from 1~n. Example: Enter "appl*", search results will yield apple, apples, apply, applied, application…(often used in English word searches) e , appl es , appl y , appl ied , appl ication … ( (often used to English word searches) )
AND、OR、NOT	Boolean logic combinations of key words is a skill used to expand or refine search parameters. (1) AND (1) AND: Refines search parameters (2) OR (2) OR: Expands search parameters (3) NOT: Excludes irrelevant parameters

DOI stands for Digital Object Identifier （ D igital O bject I dentifier ） ,
and is the unique identifier for objects on the internet. It can be used to create persistent link and to cite articles.

Using DOI as a persistent link

To create a persistent link, add「http://dx.doi.org/」「 http://dx.doi.org/ 」 before a DOI.
For instance, if the DOI of an article is 10.5297/ser.1201.002 , you can link persistently to the article by entering the following link in your browser: http://dx.doi.org/ 10.5297/ser.1201.002 。
The DOI link will always direct you to the most updated article page no matter how the publisher changes the document's position, avoiding errors when engaging in important research.

Cite a document with DOI

When citing references, you should also cite the DOI if the article has one. If your citation guideline does not include DOIs, you may cite the DOI link.

DOIs allow accurate citations, improve academic contents connections, and allow users to gain better experience across different platforms. Currently, there are more than 70 million DOIs registered for academic contents. If you want to understand more about DOI, please visit airiti DOI Registration （ doi.airiti.com ）。

Data Source

College of Engineering > Department of Materials Science and Engineering
Engineering > General Engineering

Bibliography Management Tool

Related Links

Report an Issue

Purchase Single Articles

Download PDF

探討二氧化矽粒子之親疏水性在疏水基板上之自組裝研究

Self-Assembly of Silica Particles with Different Hydrophobicities on Hydrophobic Substrate

吳易真 , Masters　　Advisor：曾文甲　　

繁體中文 DOI： 10.6845/NCHU.2013.00857

二氧化矽；矽烷偶合劑；核殼結構；親水性；疏水性；染料吸附； Silica ； Silane ； Core-Shell structure ； Hydrophilic ； Hydrophobic ； Dye adsorption

Abstract │ Reference (43) │ Altmetrics

Abstract 〈TOP〉

本研究透過溶膠凝膠法合成親水表面的二氧化矽粒子，由動態光散射儀分析，異丙醇所合成的二氧化矽粒子尺寸為437±46 nm，使用與矽酸四乙酯 (Tetraethylorthosillicate, TEOS)結構相似的矽烷偶合劑修飾親水二氧化矽表面，例如選用3-氨基丙三乙氧基矽烷 (3-aminopropyltriethoxysilane, APTES)與苯基三乙氧基矽烷 (Phenyltriethoxysilane, PhTES)，經過表面修飾後的二氧化矽，從界面電位分析儀分析二氧化矽表面等電位點，親水表面的二氧化矽為pH=2.8、以APTES修飾過的二氧化矽為pH=8.7、以PhTES修飾過的二氧化矽為pH=3.8，其結果證明二氧化矽表面已被矽烷偶合劑修飾，使用不同矽烷偶合劑修飾的二氧化矽，其飽和修飾濃度不同，APTES修飾的二氧化矽飽和濃度為39 mM，而PhTES的修飾量為98 mM才達到飽和值，由於以APTES修飾過的二氧化矽飽和值時的接觸角為30o，以PhTES修飾過的二氧化矽飽和值時的接觸角為110o，吾人將以PhTES修飾過的二氧化矽與未修飾過的二氧化矽各自吸附螢光染劑Rhodamine B，未修飾過的二氧化矽利用靜電吸引力吸附染劑，其吸附性較差，在螢光顯微鏡下強度比PhTES修飾過的二氧化矽弱，PhTES修飾過的二氧化矽主要利用PhTES上的苯環基去吸附螢光染劑上的疏水官能基，因此能吸附較多的染劑；將吸附上螢光染劑的二氧化矽分散於去離子水中，將此水溶液滴在疏水基板上，控制環境溫度65oC與濕度50 %，乾燥後，由形貌觀察，親水表面的二氧化矽與PhTES修飾過的二氧化矽胚體受到重力及咖啡圈效應（Coffee ring effect）影響，使兩種粒子堆積的位置不同。混合親水表面的二氧化矽與PhTES修飾過疏水表面的二氧化矽於水溶液，環境溫度65 oC與濕度50 %時，乾燥後的胚體以共軛焦顯微鏡（Laser scanning confocal microscope）觀察，分析胚體之螢光影像，胚體中間之螢光訊號比胚體周圍強，因為PhTES修飾過疏水表面的二氧化矽受到重力影響沉降，而親水表面的二氧化矽受到咖啡圈效應影響，往胚體周圍堆積，使胚體周圍的螢光強度減低；由胚體切面分析其螢光訊號得知，大部份PhTES修飾過疏水表面的二氧化矽會與表面親水的二氧化矽混合沉降在底部，不過在胚體的邊緣有些許螢光訊息，推測是部份未沉降表面疏水的二氧化矽，會在移動至液氣界面上，於乾燥後，PhTES修飾過疏水的二氧化矽在表面形成一殼層。

Parallel Abstract 〈TOP〉

Hydrophilic monodisperse silica (SiO2) particles have been prepared by sol-gel method. From dynamic light-scattering measurement, an average particle size of 437±46 nm is found. 3-aminopropyltriethoxysilane (APTES) and phenyltriethoxy silane (PhTES), which have the same structure of tetraethylorthosillicate (TEOS), have been used to modify the SiO2 surface. From zeta potential and Raman spectroscopy, amino or phenyl groups have been grafted on the hydrophilic particles. Contact angle of water on the APTES modified SiO2 is just 30o. On the other hand, the PhTES modified SiO2 present a contact angle of 110o, and are then used as the hydrophobic SiO2 in this study. When mixing the hydrophilic SiO2 with Rhodamine B dye, the dye is weakly adsorbed by electrostatic forces. In contrast, the hydrophobic SiO2 can adsorb the dye strongly by the phenyl group. Confocal laser scanning microscopy has been used to compare the hydrophilic and hydrophobic SiO2 particles from detection of the dye signals. The SiO2 particles have been dispersed in de-ionized water and dropped onto hydrophobic flat substrates. The droplets are dried at controlled temperature, humidity and particle content. Shape of the dried droplets depends on the surface property, humidity and particle content. The hydrophilic and hydrophobic SiO2 particles have been mixed in proportions and dropped onto the hydrophobic substrates. Most of the hydrophobic SiO2 particles sediment faster than that of the hydrophilic particles.

Reference ( 43 ) 〈TOP〉

[2] K. Ariga, J. P. Hill, M. V. Lee, A. Vinu, R. Charvet, and S. Acgarya, “Challenges and Breakthroughs in Recent Research on Self-Assembly”, Sci. Technol. Adv. Mater., 9, 104-109 (2008).
連結：
[4] A. D. Dinsmore, M. F. Hsu, M. G. Nikolaides, M. Marquez, A. R. Bausch, and D.A Weitz , “Colloidosomes: Selectively Permeable Capsules Composed of Colloidal Particles”, Science, 298, 1006-1009 (2002).
連結：
[5] L. Y. Chu, A. S. Utada, R. K. Shah, J. W. Kim, and D. A Weitz, “Controllable Monodisperse Multiple Emulsion”, Angew. Chem. Int. Ed., 46, 8970-8974 (2007).
連結：
[6] R. Xu, W. Pang and Q. Huo, “Modern Inorganic Synthetic Chemistry”, Elsevier, 63-95, Amsterdam (2011).
連結：
[7] G. Shi, Y. Xu, K. Sheng, and Chun Li, “Self-Assembled Graphene Hydrogel via a One-Step Hydrothermal Process”, ACS Nano, 4, 4324-4330 (2010).
連結：

Altmetrics

〈TOP〉

E-mail ：

When an article is available to download, a notice will be sent to your mailbox address.

E-mail ：