Silsesquioxane-based triphenylamine functionalized porous polymer for CO2, I2 capture and nitro-aromatics detection

• Published in: Polymer (Guilford) 2020-01, Vol.186, p.122004, Article 122004
• Main Authors: Wang, Qingzheng, Liu, Huanhuan, Jiang, Chundong, Liu, Hongzhi
• Format: Article
• Language: English
• Subjects: Aluminum chloride; Aromatic compounds; Carbon dioxide; Carbon dioxide adsorption; Chemical industry; Coupling; Explosives detection; Iodine capture; Nanoporous polymer; Nitro-aromatics detection; Polymers; Structural hierarchy; Substrates
• ISSN: 0032-3861; 1873-2291
• DOI: 10.1016/j.polymer.2019.122004

A novel triphenylamine-functionalized silsesquioxane monomer (OTS) is synthesized by Heck coupling reaction involving octavinylsilsesquioxane (OVS) and (4-bromophenyl)diphenylamine as the substrates. Subsequently, OTS is used as the precursor to prepare a multifunctional hybrid porous polymer (HLPP-OTS) via Scholl coupling reaction in the presence of AlCl3. HLPP-OTS possesses high surface area of 814 m2 g−1 and hierarchical microporous/mesoporous structure. The polymer shows CO2 adsorption capacity of 8.04 wt% (1.83 mmol g−1) at 273.0 K/101 kPa as well as high I2 uptake of 406 wt% in vapor and 468 mg g−1 in solution. The polymer also exhibits excellent luminescence property and acts as a sensitive chemo-sensor to detect explosives with high sensitivity towards 5-Nitrosalicylaldehyde (KSV = 36560 M−1). A new triphenylamine-functionalized silsesquioxane-based hybrid porous polymer was successfully prepared via Scholl coupling reaction. It showed high adsorption capacity for CO2 and I2. Moreover, it could function as luminescent sensor to detect nitro-aromatics. [Display omitted] •A novel Triphenylamine substituted silsesquioxane monomer (OTS) was synthesized and further used as a single building block to prepare a multifunctional hybrid porous polymer (HLPP-OTS).•HLPP-OTS exhibited a high specific surface area of 814 m2g−1.•HLPP-OTS showed a high I2 absorption capacity of 406 wt% in vapor and 468 mg g−1 in solution.•HLPP-OTS could serve as a fluorescent sensor to detect explosives.