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	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.

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