Three-Dimensional Wormhole and Ordered Mesostructures and Their Applicability as Optically Ion-Sensitive Probe Templates

Autor:	Fujio Mizukami, Adel A. Ismail, Hideyuki Matsunaga, Sherif A. El-Safty, D. Prabhakaran
Rok vydání:	2008
Předmět:	Color transition Template Materials science Nanosensor General Chemical Engineering Materials Chemistry Ion sensitive Analytical chemistry General Chemistry Wormhole Ion
Zdroj:	Chemistry of Materials. 20:2644-2654
ISSN:	1520-5002 0897-4756
DOI:	10.1021/cm701966c
Popis:	Large-scale cubic Pm3n silica monoliths (HOM) were fabricated in wormhole and ordered mesostructures and in shape- and size-controlled cage pores by using a simple and fast strategy. The functional use of these 3D HOM monoliths as probe anchoring templates enabled the efficient designs of optical nanosensors. In this regard, the synthesized chromoionophore was physisorbed into the 3D HOM pore surface carriers without potential leaching. Results revealed that the structural features of the HOM monoliths such as ordered and worm-like cage pores substantially influenced the ion-sensing functionality in terms of their probe inclusion capacities, ion-transport diffusion, optical responsive profile, and visual color transition series during the detection of ultratraces of toxic Pb(II) ions. The nanosensors were selective in discriminating trace Pb(II) ions over multicomponent matrix species, with reliable and reproducible detection and quantification limits. A comparative study on the ion-sensing efficiency of ...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::96b193be18176c1cacdd16992fb24957 https://doi.org/10.1021/cm701966c Zobrazit plný text záznamu