Dendrimer‐Based, High‐Luminescence Conjugated Microporous Polymer Films for Highly Sensitive and Selective Volatile Organic Compound Sensor Arrays

Abstract

Conjugated microporous polymers (CMPs) are attracting increasing attention in chemical sensing due to their extended π-conjugated framework, permanent microporous structure, and large specific surface area. However, the extremely poor solubility and processability of CMPs, as well as the serious fluorescence quenching caused by aggregation, restrict their practical applications. Herein, a high-luminescence CMP film is constructed based on a novel dendrimer (TPETCz) featured by its central tetraphenylethylene "core" with aggregation-induced emission effect and its highly electro-active "branches." High specific surface area CMP films for analyte diffusion are fabricated by a facile in situ electropolymerization method. These dendrimerbased CMP films exhibit superior sensitivity to volatile organic compounds (VOCs). More importantly, 18 types, the most types reported, of VOC vapors are precisely distinguished by the linear discriminant analysis by establishing a 2D fluorescence sensor array based on the CMP films and the dendrimer monomer films.

Advances in Molecularly Imprinted Polymers Based Affinity Sensors (Review)

“…Due to attractive optical properties conducting polymers can be used in optical sensors [ 138 , 139 ]. Conducting polymers can be well exploited in the design of photoluminescence sensors [ 140 , 141 ]. Several carbazole-based conducting polymers ( N -benzylcarbazole, N -benzyldimethoxy-carbazole and N -benzyldibromo-carbazole) were used for the development of photoluminescence sensors suitable for the detection of such pesticides as: isopropalin, trifluralin, imidacloprid, fenitrothion, cyfluothrin and glyphosate [ 120 ].…”

“…In contrary to photoluminescence ability of some conducting polymers [ 120 , 140 , 141 ], our research team has determined that some other conducting polymers (e.g., polypyrrole) have a very attractive feature to quench photoluminescence of adsorbed molecules, which are exhibiting photoluminescence [ 142 , 143 ]. This effect is based on so called “Forster resonance energy transfer (FRET)” that can be observed if photoluminescence emitting molecules are located in close proximity to photoluminescence quencher.…”

De novo synthesis of bifunctional conjugated microporous polymers for synergistic coordination mediated uranium entrapment

“…Conjugated microporous polymers (CMPs) are a series of macromolecules with π-conjugated three-dimensional (3D) networks consisting of building blocks via covalent bonds [1,2]. Since the first synthesis of CMPs by Sonogashira-Hagihara coupling [3] of halogen and alkyne monomers in 2007 [4], CMPs have emerged as one of the most promising materials applied in many fields [5,6], including luminescent materials [7,8], heterogeneous catalysis [9,10], energy storage [11][12][13], environmental remediation [14][15][16] and, particularly, removal of heavy metal ions [17,18]. CMPs generally show advantages in terms of task-specific designability [19], benign synthesis, and controlled porosity [20].…”

Conducting Polymers in the Design of Biosensors and Biofuel Cells

“…Some CPs were applied in simple optical/visual [ 65 , 66 ] and photoluminescence-based [ 67 ] sensing, e.g., a conjugated microporous polymer was applied as a sensing platform for the determination of aminoglycoside antibiotic in water [ 68 ]. CPs based on carbazole-based structures (namely, N -benzyldibromo-carbazole, N -benzyldimethoxy-carbazole, and N -benzylcarbazole) were applied in the design of fluorescence-based sensors and were applied for the determination of some pesticide (glyphosate, trifluralin, cyfluothrin, fenitrothion, imidacloprid, and isopropalin) concentrations [ 69 ].…”