Investigation on critical aggregation concentration of carbosiloxane dendrimer in dilute solution probed by rhodamine b | |
Zheng, Mei-Ling1,3; Chen, Wei-Qiang1,2; Duan, Xuan-Ming1,2 | |
刊名 | Journal of physical chemistry a
![]() |
2008-07-31 | |
卷号 | 112期号:30页码:6864-6868 |
ISSN号 | 1089-5639 |
DOI | 10.1021/jp710493d |
通讯作者 | Chen, wei-qiang(chenwq7315@mail.ipc.ac.cn) |
英文摘要 | We propose a novel method for probing aggregation of dendrimers by investigating the isomerization equilibrium between pink zwitterionic form (z-form) and colorless lactonic form (l-form) of rhodamine b (rhb) molecules in dilute solution. investigation using carbosiloxane dendrimers (csio-d) with different generations as the model dendrimer molecules showed that the equilibrium constant of isomerization of rhb increased dramatically at the critical aggregation concentration (cac) of dendrimers. the redox potential differences between isomers of rhb indicated that aggregation of csio-d accelerated the isomerization of rhb and stabilized the l-form of rhb. the data on gibbs energy and electrolytic conductivity provided further evidence for confirming the cac of dendrimers in dilute solution and showed good agreement with our other experimental results. the proposed method is effective in estimating the cac of dendrimers in dilute solution. |
WOS关键词 | MOLECULAR-FORMS ; LASER-EMISSION ; FLUORESCENCE ; SOLVENTS |
WOS研究方向 | Chemistry ; Physics |
WOS类目 | Chemistry, Physical ; Physics, Atomic, Molecular & Chemical |
语种 | 英语 |
出版者 | AMER CHEMICAL SOC |
WOS记录号 | WOS:000257926900012 |
内容类型 | 期刊论文 |
URI标识 | http://www.corc.org.cn/handle/1471x/2385247 |
专题 | 中国科学院大学 |
通讯作者 | Chen, Wei-Qiang |
作者单位 | 1.Chinese Acad Sci, Lab Organ NanoPhoton, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Tech Inst Phys & Chem, Lab Optoelect Funct Mat & Mol Engn, Beijing 100080, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100080, Peoples R China |
推荐引用方式 GB/T 7714 | Zheng, Mei-Ling,Chen, Wei-Qiang,Duan, Xuan-Ming. Investigation on critical aggregation concentration of carbosiloxane dendrimer in dilute solution probed by rhodamine b[J]. Journal of physical chemistry a,2008,112(30):6864-6868. |
APA | Zheng, Mei-Ling,Chen, Wei-Qiang,&Duan, Xuan-Ming.(2008).Investigation on critical aggregation concentration of carbosiloxane dendrimer in dilute solution probed by rhodamine b.Journal of physical chemistry a,112(30),6864-6868. |
MLA | Zheng, Mei-Ling,et al."Investigation on critical aggregation concentration of carbosiloxane dendrimer in dilute solution probed by rhodamine b".Journal of physical chemistry a 112.30(2008):6864-6868. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论