title: Transcription of G-quartet supramolecular aggregates into hierarchical mesoporous silica nanotubes.
abstract: The use of 5-guanosine monophosphate (GMP) with Sr(2+) ions to form G-quadruplex bundles as supramolecular templates for the preparation of hierarchical mesoporous silica nanotube materials is reported here, and some mesopores with a diameter of 4-22 nm were obtained. Furthermore, some mesopore channels which run perpendicularly to the center axis of the tube and penetrate right through the outer wall of the nanotubes were achieved by removing the templates. Besides, porous hollow silica spheres were obtained by changing some of the reaction conditions during the process of preparation. Their structures are stable even after high temperature calcination. A formation mechanism was proposed and discussed, and their structures were characterized using a number of means including X-ray diffraction, IR spectra, N2 adsorption-desorption isotherms, scanning electron microscopy (SEM) and transmission electron microscopy (TEM).
authors.affiliation: State Key Labrotory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. Chian. weijxu@hnu.edu.cn ouencaionc@aliyun.com and Department of Resources and Environmental Sciences, Baoshan College, Baoshan, Yunnan, 678000, P. R. China.
authors.forename: Liang
authors.initials: L
authors.lastname: Min
authors.affiliation: College of Materials Science and Engineering, Hunan University, Changsha, 410082, P. R China.
authors.forename: Tao
authors.initials: T
authors.lastname: Li
authors.affiliation: State Key Labrotory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. Chian. weijxu@hnu.edu.cn ouencaionc@aliyun.com.
authors.forename: Qi
authors.initials: Q
authors.lastname: Tan
authors.affiliation: State Key Labrotory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. Chian. weijxu@hnu.edu.cn ouencaionc@aliyun.com.
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Tan
authors.affiliation: State Key Labrotory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. Chian. weijxu@hnu.edu.cn ouencaionc@aliyun.com.
authors.forename: Wu
authors.initials: W
authors.lastname: Pan
authors.affiliation: State Key Labrotory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. Chian. weijxu@hnu.edu.cn ouencaionc@aliyun.com.
authors.forename: Li
authors.initials: L
authors.lastname: He
authors.affiliation: State Key Labrotory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. Chian. weijxu@hnu.edu.cn ouencaionc@aliyun.com.
authors.forename: Jie
authors.initials: J
authors.lastname: Zhang
authors.affiliation: State Key Labrotory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. Chian. weijxu@hnu.edu.cn ouencaionc@aliyun.com.
authors.forename: Encai
authors.initials: E
authors.lastname: Ou
authors.affiliation: State Key Labrotory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. Chian. weijxu@hnu.edu.cn ouencaionc@aliyun.com.
authors.forename: Weijian
authors.initials: W
authors.lastname: Xu