博碩士論文 88321031 完整後設資料紀錄

DC 欄位	值	語言
DC.contributor	化學工程與材料工程學系	zh_TW
DC.creator	鄭仲宏	zh_TW
DC.creator	Juen-Hung Jeng	en_US
dc.date.accessioned	2001-6-26T07:39:07Z
dc.date.available	2001-6-26T07:39:07Z
dc.date.issued	2001
dc.identifier.uri	http://ir.lib.ncu.edu.tw:88/thesis/view_etd.asp?URN= 88321031
dc.contributor.department	化學工程與材料工程學系	zh_TW
DC.description	國立中央大學	zh_TW
DC.description	National Central University	en_US
dc.description.abstract	2-甲基	zh_TW
dc.description.abstract	Alkyl halides undergo nucleophilic substitution with heterocylic compounds such as 2-methylquinoline and 4-methylquinoline, and form the stabile quaternary ammonium salt. Because of strong withdrawal electrons effects at the nitrogen atom on quaternary ammonium salt, the methyl group out of aromatic ring becomes an active nucleophile, witch can react with aromatic aldehydes to form cyanine compounds. The blue dye “cyanine”was first prepared by Greville Williams in 1856, in which two heterocyclic nuclei containing nitrogen are linked through an odd numbered methane chain in such a way that resonance occurs through the conjugated system between tertiary and quaternary nitrogen atoms, that make the red shift of ultraviolet-visible spectra of the cyanine compounds. The study takes 2-methylpyridine to be the reactant and synthesizes cyanine compounds with aromatic aldehydes. By changing the number of methane chain, we hope to synthesize the compounds which have the maximum absorbance of ultraviolet-visible spectra more than 600nm, and study on the property of ultraviolet-visible and infrared spectra.	en_US
DC.subject	縮合反應	zh_TW
DC.subject	芳香醛	zh_TW
DC.subject	花青染料	zh_TW
DC.subject	2-甲基	zh_TW
DC.subject	塞安寧	zh_TW
DC.subject	aromatic aldehydes	en_US
DC.subject	2-methylpyridine	en_US
DC.subject	cyanin	en_US
DC.title	2-甲基	zh_TW
dc.language.iso	zh-TW	zh-TW
DC.title	Study on the synthesis of 2-methylpyridine cyanice compounds	en_US
DC.type	博碩士論文	zh_TW
DC.type	thesis	en_US
DC.publisher	National Central University	en_US