An AIE luminogen-based electropolymerized film: an ultrasensitive fluorescent probe for TNP and Fe³⁺ in water

Abstract

Porous organic polymers (POPs) are potential materials for fluorescent sensors because of their extended π-conjugated framework and porous structure. However, poor processability and photofunctionality are the major limitations for their...

Pyrenyl‐Based Aggregation‐Induced Emission Luminogen for Highly Sensitive and Selective Detection of 2,4,6‐Trinitrotoluene in Water

“…The LUMO levels of TNT and TNP were comparable. [4] However, TNT exhibited relatively higher quenching efficiency than TNP, as TNP had a hydroxyl group which had lone electron pairs. In addition, TNP formed a negatively charged anion in aqueous solution and the resulting electrostatic repulsion hindered the PET process, which lead to a lower quenching effects.…”

“…[3] Many techniques have been developed for detecting NAEs, most analytical methods rely on complex instruments, which are time-consuming and limit their application. [4] Fluorescence measurement shows great simplicity and satisfactory sensitivity, so it has received extensive attention. [5] Although fluorescence sensors has been well-known, most of luminophores are insoluble and have aggregation-caused quenching effects in water, which affect the detection of TNT.…”

A New Compound for Sequential Sensing of Picric Acid and Aliphatic Amines: Physicochemical Details and Construction of Molecular Logic Gates

“…A recent report on the use of a Tröger's base structural motif using a 4amino-1,8-naphthalimide incorporated nitrogen-rich Zn(II) coordination polymer yielded good results. [8] Host-guest based competitive binding controlled aggregation-induced emission (AIE) method came handy in detecting PA. [9][10][11][12][13][14][15][16][17] Even carbon dotbased polypyrrole nanocomposites and sol-gel methods also proved beneficial for PA detection. [18][19][20][21][22][23][24][25] Moreover, modern day metal-organic-frameworks (MOFs) [26][27][28][29][30][31][32][33][34][35][36][37][38] and covalent-organicframeworks (COFs) [39][40][41] were found to provide good sensor materials for PA in different solvents.…”

Design and Synthesis of AIE-Based Small-Molecule and Nanofibrous Film for Fluorescent Sensing Application

“…Fluorescent films composed of π-conjugated materials-based fluorescent sensors and membranous materials are promising sensor technology due to their real-time detection, easy fabrication, noninvasiveness detection, and mechanical stability and flexibility (Guan et al, 2015;Miao et al, 2016). In recent years, they have been widely used in detecting residual pesticides (Peng et al, 2021), enzymes (Zhao et al, 2017a;Zhao et al, 2017b), pollutants (Lee et al, 2019;Zhao et al, 2020b;Sun et al, 2021), explosives (Zhou et al, 2014;Sun et al, 2015;Li et al, 2018;Hao et al, 2021), metal ions (Chen et al, 2020), gases (Moscoso et al, 2020), and temperature and humidity (Jiang et al, 2020;Li et al, 2020), which greatly expanded the applications of fluorescence sensors. Generally, high selectivity and sensitivity are the key characteristics of a successful membranous fluorescent sensor (Sun et al, 2015).…”