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作者车向阳（2019）在《几种联酰胺衍生物有机凝胶的结构与性质研究》一文中研究指出：低分子量有机凝胶是凝胶因子通过非共价键相互作用形成三维网状结构并使溶剂失去流动性而形成的一种类似固体的“软”材料。近些年来,低分子量有机凝胶由于其在模板材料、传感器、光俘获以及药物释放等诸多领域有潜在的应用前景而受到人们广泛关注。低分子量有机凝胶的性质受到很多因素的影响,如凝胶因子的分子结构、凝胶因子的排列结构、形貌及凝胶化动力学过程等。迄今为止,大多数研究者致力于设计新的凝胶因子,以探究其对凝胶结构与性质的影响。实际上,凝胶是一种由有序纳/微米网络与大量溶剂共存的复杂体系,凝胶制备条件的改变同样会影响凝胶因子在溶剂中的凝胶化行为,调控凝胶的性质。本论文选择几种联酰胺衍生物作为研究对象,深入地探讨了制备条件(如温度、凝胶因子浓度、溶剂类型等)对联酰胺衍生物有机凝胶的结构与性质的影响。具体的结论如下:(1)联酰胺衍生物BP8-C在甲苯和乙醇中受冷却方式的影响可以形成三种排列结构。BP8-C(14.7 mg/m L,-20℃)在乙醇中快速冷却得到的沉淀呈现柱状相(Colh1);逐步冷却得到的凝胶呈现立方相(Cubic)。BP8-C(11 mg/m L,20℃)在甲苯中快速冷却得到的凝胶呈现柱状相(Colh2);逐步冷却得到的沉淀呈现Colh1排列。三种排列结构的热力学稳定性关系为:立方相最好,Colh1次之,Colh2最差。BP8-C/乙醇沉淀(14.7 mg/m L,-20℃,快速冷却,Colh1)在20℃下保温5小时,体系由沉淀状态转变为凝胶状态,BP8-C的聚集结构由Colh1转变为立方相。BP8-C/甲苯凝胶(11 mg/m L,20℃,快速冷却,Colh2)在95℃(高于Tgel)下保温100小时,BP8-C的聚集结构逐渐由Colh2转变为Colh1,最终变为立方相。高的放置温度能够加快BP8-C的凝胶结构由不稳定相向稳定相的转变。(2)联酰胺衍生物4D16在环己烷、苯和乙醇中表现出三种排列结构。4D16(15 mg/m L,20℃)在环己烷中形成凝胶,其干凝胶呈现层有序结构(L1);在苯和乙醇中表现沉淀状态,其聚集结构分别为立方结构(Cubic)和层有序结构(L2)。4D16在环己烷和苯中受到保温温度和浓度的影响,其干凝胶的结构为L1或立方相或两种结构的共存相,高的浓度或者低的保温温度会诱导凝胶中更多L1结构的形成。4D16/苯凝胶(40 mg/m L,20℃)以及4D16/环己烷凝胶(15 mg/m L,20℃)在放置过程中发生L1-Cubic的转变,凝胶的Tgel(凝胶-溶胶转变温度)降低。表现立方相的4D16凝胶相较L1结构的凝胶更加稳定。(3)联酰胺衍生物FH-T5(10 mg/m L,20℃)能够在乙二醇体积含量小于30%的乙醇/乙二醇混合溶剂中形成稳定的凝胶,其干凝胶形貌为球状或棒状聚集体与纤维并存。在体系凝胶化的过程中,球状或者棒状聚集体优先析出,进而作为纤维生长的异质形核点,加快体系凝胶化。球状或棒状聚集体的含量越多,体系凝胶化的时间越短,纤维的生长维数(Df值)越大(由1.302增加到1.426)。FH-T5(10 mg/m L,20℃)在混合溶剂中形成的凝胶随着乙二醇体积含量的增加,凝胶-溶胶转变温度(Tgel)升高,力学性质降低。(4)我们采用梯度降温的方法制备了基于联酰胺衍生物BPH-8和具有光响应的凝胶因子MB8的自分类二组分有机凝胶。二组分体系的凝胶化动力学研究表明,BPH-8纤维的生长维数(Df值)不会受到MB8的影响,但MB8受到BPH-8纤维的影响,其纤维的生长维数相较于同浓度的MB8/乙醇凝胶降低(由1.59减小到1.44)。BPH-8/MB8二组分凝胶呈现光致凝胶-凝胶的转变。我们获得了基于BPH-8/MB8二组分凝胶的稳定的图案化凝胶,该图案凝胶中的被照射区域相较未被照射区域具有较弱的荧光发射强度、较低的力学性质。
Abstract
di fen zi liang you ji ning jiao shi ning jiao yin zi tong guo fei gong jia jian xiang hu zuo yong xing cheng san wei wang zhuang jie gou bing shi rong ji shi qu liu dong xing er xing cheng de yi chong lei shi gu ti de “ruan ”cai liao 。jin xie nian lai ,di fen zi liang you ji ning jiao you yu ji zai mo ban cai liao 、chuan gan qi 、guang fu huo yi ji yao wu shi fang deng zhu duo ling yu you qian zai de ying yong qian jing er shou dao ren men an fan guan zhu 。di fen zi liang you ji ning jiao de xing zhi shou dao hen duo yin su de ying xiang ,ru ning jiao yin zi de fen zi jie gou 、ning jiao yin zi de pai lie jie gou 、xing mao ji ning jiao hua dong li xue guo cheng deng 。qi jin wei zhi ,da duo shu yan jiu zhe zhi li yu she ji xin de ning jiao yin zi ,yi tan jiu ji dui ning jiao jie gou yu xing zhi de ying xiang 。shi ji shang ,ning jiao shi yi chong you you xu na /wei mi wang lao yu da liang rong ji gong cun de fu za ti ji ,ning jiao zhi bei tiao jian de gai bian tong yang hui ying xiang ning jiao yin zi zai rong ji zhong de ning jiao hua hang wei ,diao kong ning jiao de xing zhi 。ben lun wen shua ze ji chong lian xian an yan sheng wu zuo wei yan jiu dui xiang ,shen ru de tan tao le zhi bei tiao jian (ru wen du 、ning jiao yin zi nong du 、rong ji lei xing deng )dui lian xian an yan sheng wu you ji ning jiao de jie gou yu xing zhi de ying xiang 。ju ti de jie lun ru xia :(1)lian xian an yan sheng wu BP8-Czai jia ben he yi chun zhong shou leng que fang shi de ying xiang ke yi xing cheng san chong pai lie jie gou 。BP8-C(14.7 mg/m L,-20℃)zai yi chun zhong kuai su leng que de dao de chen dian cheng xian zhu zhuang xiang (Colh1);zhu bu leng que de dao de ning jiao cheng xian li fang xiang (Cubic)。BP8-C(11 mg/m L,20℃)zai jia ben zhong kuai su leng que de dao de ning jiao cheng xian zhu zhuang xiang (Colh2);zhu bu leng que de dao de chen dian cheng xian Colh1pai lie 。san chong pai lie jie gou de re li xue wen ding xing guan ji wei :li fang xiang zui hao ,Colh1ci zhi ,Colh2zui cha 。BP8-C/yi chun chen dian (14.7 mg/m L,-20℃,kuai su leng que ,Colh1)zai 20℃xia bao wen 5xiao shi ,ti ji you chen dian zhuang tai zhuai bian wei ning jiao zhuang tai ,BP8-Cde ju ji jie gou you Colh1zhuai bian wei li fang xiang 。BP8-C/jia ben ning jiao (11 mg/m L,20℃,kuai su leng que ,Colh2)zai 95℃(gao yu Tgel)xia bao wen 100xiao shi ,BP8-Cde ju ji jie gou zhu jian you Colh2zhuai bian wei Colh1,zui zhong bian wei li fang xiang 。gao de fang zhi wen du neng gou jia kuai BP8-Cde ning jiao jie gou you bu wen ding xiang xiang wen ding xiang de zhuai bian 。(2)lian xian an yan sheng wu 4D16zai huan ji wan 、ben he yi chun zhong biao xian chu san chong pai lie jie gou 。4D16(15 mg/m L,20℃)zai huan ji wan zhong xing cheng ning jiao ,ji gan ning jiao cheng xian ceng you xu jie gou (L1);zai ben he yi chun zhong biao xian chen dian zhuang tai ,ji ju ji jie gou fen bie wei li fang jie gou (Cubic)he ceng you xu jie gou (L2)。4D16zai huan ji wan he ben zhong shou dao bao wen wen du he nong du de ying xiang ,ji gan ning jiao de jie gou wei L1huo li fang xiang huo liang chong jie gou de gong cun xiang ,gao de nong du huo zhe di de bao wen wen du hui you dao ning jiao zhong geng duo L1jie gou de xing cheng 。4D16/ben ning jiao (40 mg/m L,20℃)yi ji 4D16/huan ji wan ning jiao (15 mg/m L,20℃)zai fang zhi guo cheng zhong fa sheng L1-Cubicde zhuai bian ,ning jiao de Tgel(ning jiao -rong jiao zhuai bian wen du )jiang di 。biao xian li fang xiang de 4D16ning jiao xiang jiao L1jie gou de ning jiao geng jia wen ding 。(3)lian xian an yan sheng wu FH-T5(10 mg/m L,20℃)neng gou zai yi er chun ti ji han liang xiao yu 30%de yi chun /yi er chun hun ge rong ji zhong xing cheng wen ding de ning jiao ,ji gan ning jiao xing mao wei qiu zhuang huo bang zhuang ju ji ti yu qian wei bing cun 。zai ti ji ning jiao hua de guo cheng zhong ,qiu zhuang huo zhe bang zhuang ju ji ti you xian xi chu ,jin er zuo wei qian wei sheng chang de yi zhi xing he dian ,jia kuai ti ji ning jiao hua 。qiu zhuang huo bang zhuang ju ji ti de han liang yue duo ,ti ji ning jiao hua de shi jian yue duan ,qian wei de sheng chang wei shu (Dfzhi )yue da (you 1.302zeng jia dao 1.426)。FH-T5(10 mg/m L,20℃)zai hun ge rong ji zhong xing cheng de ning jiao sui zhao yi er chun ti ji han liang de zeng jia ,ning jiao -rong jiao zhuai bian wen du (Tgel)sheng gao ,li xue xing zhi jiang di 。(4)wo men cai yong ti du jiang wen de fang fa zhi bei le ji yu lian xian an yan sheng wu BPH-8he ju you guang xiang ying de ning jiao yin zi MB8de zi fen lei er zu fen you ji ning jiao 。er zu fen ti ji de ning jiao hua dong li xue yan jiu biao ming ,BPH-8qian wei de sheng chang wei shu (Dfzhi )bu hui shou dao MB8de ying xiang ,dan MB8shou dao BPH-8qian wei de ying xiang ,ji qian wei de sheng chang wei shu xiang jiao yu tong nong du de MB8/yi chun ning jiao jiang di (you 1.59jian xiao dao 1.44)。BPH-8/MB8er zu fen ning jiao cheng xian guang zhi ning jiao -ning jiao de zhuai bian 。wo men huo de le ji yu BPH-8/MB8er zu fen ning jiao de wen ding de tu an hua ning jiao ,gai tu an ning jiao zhong de bei zhao she ou yu xiang jiao wei bei zhao she ou yu ju you jiao ruo de ying guang fa she jiang du 、jiao di de li xue xing zhi 。
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论文作者分别是来自吉林大学的车向阳，发表于刊物吉林大学2019-06-25论文，是一篇关于联酰胺衍生物论文,有机凝胶结构论文,凝胶化动力学论文,凝胶性质论文,吉林大学2019-06-25论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自吉林大学2019-06-25论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
标签：联酰胺衍生物论文; 有机凝胶结构论文; 凝胶化动力学论文; 凝胶性质论文; 吉林大学2019-06-25论文;