Conversion from self-assembled block copolymer nanodomains to carbon nanostructures with well-defined morphology

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題名:	Conversion from self-assembled block copolymer nanodomains to carbon nanostructures with well-defined morphology
作者:	孫亞賢;Sun, Ya-Sen;Huang, Wei-Hua;Liou, Jiun-You;Lu, Yen-Hsing;Shih, Kuo-Chih;Lin, Chien-Fu;Cheng, Shao-Liang
貢獻者:	工學院化學工程與材料工程學系
關鍵詞:	Arrays;Block copolymers;Capping;Carbon;composite polymers;Crosslinking;films (materials);nanomaterials;Nanostructure;nitrogen;organic matter;Polystyrene resins;Pyrolysis;silica;temperature;thermal energy;ultraviolet radiation
日期:	2015-01-01
上傳時間:	2026-04-21 14:31:07 (UTC+8)
出版者:	Royal Society of Chemistry
摘要:	摘要： We developed a method to fabricate arrays of nanostructured carbon materials of high quality, via direct pyrolysis of poly(styrene- b -2-vinylpyridine) (PS- b -P2VP) block copolymer (BCP) as thin films without small organic molecules incorporated as carbon resources. Prior to pyrolysis, the nanodomains were cross-linked with UV radiation under nitrogen (UVIN). As upon pyrolysis thermal energy imparts mobility to nanodomains to overcome the constraints imposed by cross-linked chains, the free surface is inevitably covered with the PS block that has a smaller surface energy; unless favorable interactions with the P2VP block exist at the free surface, the outer layer of carbonaceous films is predominantly composed of the pyrolyzed PS block. To overcome this problem, films were capped with a SiO 2 layer after UVIN. The capping layer appears to have two advantages – increased areal yields and an improved morphological fidelity. As a result, arrays of nanostructured carbon of great quality were fabricated even at temperatures far above the decomposition temperatures of PS and P2VP blocks. 出版日期： 2015-01-01 出處： RSC advances, 2015-01, Vol.5 (128), p.105774-105784 資源來源： Royal Society of Chemistry 識別號： ISSN: 2046-2069 識別號： EISSN: 2046-2069 識別號： DOI: 10.1039/C5RA17500C
顯示於類別:	[化學工程與材料工程學系 ] 期刊論文

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