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.

Sensors for Volatile Organic Compounds

“…Another notable hybridization approach for the design of colorimetric sensing materials is based on the introduction of dyes into the voids or onto the surfaces of MOFs. Such chromophore/MOF hybrid structures show improved sensitivity to VOCs as well as stability due to the protection provided by the framework. , …”

“…Such chromophore/MOF hybrid structures show improved sensitivity to VOCs as well as stability due to the protection provided by the framework. 340,326…”

Exploring the Place of Animals and Human–Animal Relationships in Hydraulic Fracturing Discourse

“…Two articles review broad environmental impacts (Arent et al 2015;Reible et al 2016), while the remaining 17 focus on air quality or water use and contamination. For instance, HVHHF is known to have broad impacts on air quality (Bai et al 2016;Brown et al 2014;Brown et al 2015;Bunch et al 2014;Colborn et al 2012;Field et al 2014;Moore et al 2014). Similar to the health impacts subtheme, this group minimally mentions animals in the text or uses Bamberger and Oswald (2012) as a general nod to potential impacts on human health.…”

Alkane-Shape-Selective Vapochromic Behavior Based on Crystal-State Host–Guest Complexation of Pillar[5]arene Containing One Benzoquinone Unit

“…Vapor-induced rearrangement of the molecular packing in the solid state is the main driving force for the optical property changes. Volatile organic amines, alcohols, ketones, , ethers, water, nitriles, halogenated alkanes, ,, and aromatics , have been used to induce vapo­chromic behavior. However, alkane-vapor-responsive vapo­chromic materials are rare because alkanes contain only C–C and C–H groups, which exhibit little affinity for adsorption materials.…”