title: Remarkable Vapochromic Behavior of Pure Organic Octahedron Embedded in Porous Frameworks.
abstract: Vapochromic behavior is employed to selectively monitor the vapor changes in surrounding environment, particularly for toxic gas leaking and floating detection. Thus, sensitive trapping and accurate response to different toxic vapors are critical factors in vapochromic sensing. In this work, a self-assembled hybrid that consists of fluorescent organic octahedron encapsulated by metal-organic polyhedron (MOP) is reported. The fluorescent octahedron is used as a responsive sensor to probe various solvent vapors, while the MOP is employed as a protector to prevent the corrosion of solvents to the organic octahedron. The hybrid exhibits remarkable vapochromic behavior to different solvents, and shows the highest selectivity and sensitivity specifically to acetone. In addition, acetone vapor under different conditions is utilized for further studying the response mechanism of the hybrid. This work presents a promising vapochromic sensor with good stability, selectivity, and sensitivity. The study is expected to open up the applicability of MOP-based hybrids for specific molecular capture, interim storage, controlled release, and advanced sensing.
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.
authors.forename: Linyi
authors.initials: L
authors.lastname: Bai
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.
authors.forename: Avijit
authors.initials: A
authors.lastname: Jana
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.
authors.forename: Huijun Phoebe
authors.initials: HP
authors.lastname: Tham
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.
authors.forename: Kim Truc
authors.initials: KT
authors.lastname: Nguyen
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.
authors.forename: Parijat
authors.initials: P
authors.lastname: Borah
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.|School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
authors.forename: Yanli
authors.initials: Y
authors.lastname: Zhao
mesh_terms: D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D009930:Organic Chemicals / Q000737:chemistry*; D016062:Porosity; D012997:Solvents / Q000737:chemistry
chemical_list: D009930:Organic Chemicals; D012997:Solvents
keywords: encapsulation; fluorescent organic octahedrons; porous polyhedra; solvent vapor sensors; stimulus responses