陕西科技大学学报(自然科学版)
陝西科技大學學報(自然科學版)
협서과기대학학보(자연과학판)
JOURNAL OF SHAANXI UNIVERSITY OF SCIENCE & TECHNOLOGY
2004年
5期
30-35
,共6页
吴敏%汤口宜明%熊谷贵子%远藤贵士%广津孝弘
吳敏%湯口宜明%熊穀貴子%遠籐貴士%廣津孝弘
오민%탕구의명%웅곡귀자%원등귀사%엄진효홍
纳米复合体%超临界二氧化碳%环糊精%偶氧苯%包合配合物%固体核磁共振%红外%X-射线衍射%差热分析%元素分析
納米複閤體%超臨界二氧化碳%環糊精%偶氧苯%包閤配閤物%固體覈磁共振%紅外%X-射線衍射%差熱分析%元素分析
납미복합체%초림계이양화탄%배호정%우양분%포합배합물%고체핵자공진%홍외%X-사선연사%차열분석%원소분석
nano-complex%supercritical carbon dioxide%cyclodextrin%azobenzene%inclusion complexes%13C CP/MAS-NMR%FTIR%powder X-ray diffraction%TG-DTA%chemical analysis
以超临界二氧化碳为溶媒,将偶氧苯分子插入到α-以及β-环糊精的分子环空洞中合成出了偶氧苯-环糊精纳米复合体.环糊精与偶氧苯的摩尔分子为1:1的混合物,放入压力30MPa、温度120℃的超临界装置中处理后,对其生成物采用红外、固体核磁共振、X-射线衍射、差热分析及化学元素分析等手段进行了分析,结果表明偶氧苯成功地插入到β-环糊精分子环空洞中形成了纳米复合体,而α-环式糊精与偶氮苯之间只是简单的物理混合物,没有形成纳米复合体.所得到的偶氮苯-β-环式糊精复合体具有通道式分子结构:二个β-环式糊精分子捕获一个偶氧苯分子,β-环式糊精的分子环空洞连成一个通道.偶氧苯插入到β-环式糊粉分子环空洞中后其热稳定性也得到大幅度提高.
以超臨界二氧化碳為溶媒,將偶氧苯分子插入到α-以及β-環糊精的分子環空洞中閤成齣瞭偶氧苯-環糊精納米複閤體.環糊精與偶氧苯的摩爾分子為1:1的混閤物,放入壓力30MPa、溫度120℃的超臨界裝置中處理後,對其生成物採用紅外、固體覈磁共振、X-射線衍射、差熱分析及化學元素分析等手段進行瞭分析,結果錶明偶氧苯成功地插入到β-環糊精分子環空洞中形成瞭納米複閤體,而α-環式糊精與偶氮苯之間隻是簡單的物理混閤物,沒有形成納米複閤體.所得到的偶氮苯-β-環式糊精複閤體具有通道式分子結構:二箇β-環式糊精分子捕穫一箇偶氧苯分子,β-環式糊精的分子環空洞連成一箇通道.偶氧苯插入到β-環式糊粉分子環空洞中後其熱穩定性也得到大幅度提高.
이초림계이양화탄위용매,장우양분분자삽입도α-이급β-배호정적분자배공동중합성출료우양분-배호정납미복합체.배호정여우양분적마이분자위1:1적혼합물,방입압력30MPa、온도120℃적초림계장치중처리후,대기생성물채용홍외、고체핵자공진、X-사선연사、차열분석급화학원소분석등수단진행료분석,결과표명우양분성공지삽입도β-배호정분자배공동중형성료납미복합체,이α-배식호정여우담분지간지시간단적물리혼합물,몰유형성납미복합체.소득도적우담분-β-배식호정복합체구유통도식분자결구:이개β-배식호정분자포획일개우양분분자,β-배식호정적분자배공동련성일개통도.우양분삽입도β-배식호분분자배공동중후기열은정성야득도대폭도제고.
By using supercritical carbon dioxide (supercritical CO2 ) as solvent, we synthesized inclusion complexes of α- and β-cyclodextrin (CD) as hosts and azobenzene (AB) as a guest. The mixtures of the host and the guest with molar ratio of 1: 1 were treated in supercritical CO2 at 30MPa and 120℃. FTIR, 13C CP/MAS-NMR, powder X-ray diffraction, TG-DTA, and chemical analysis were employed to analyze the resultant. The results indicated that β-CD and AB form an inclusion complex with molar ratio of CD/AB around 2: 1, whereas α-CD and AB is simply a physical mixture. The obtained inclusion complex has the channel type structure: two β-CD molecules maybe capture an AB molecule. The thermal stability of AB is improved greatly after includes the guest into the cavity of β-CD.
