Fluorenone and Fluorenemalononitrile‐Tethered Conjugated Microporous Polymers for Efficient CO2 Uptake and Rhodamine B Removal
6 affiliations
- 1Department of Materials and Optoelectronic Science Center for Functional Polymers and Supramolecular Materials National Sun Yat‐Sen University Kaohsiung Taiwan
- 2Department of Chemical Engineering National Tsing Hua University Hsinchu Taiwan
- 3Interdisciplinary Research Center for Hydrogen Technologies and Carbon Management (IRC‐HTCM) King Fahd University of Petroleum & Minerals Dhahran Saudi Arabia
- 4Department of Chemistry School of Natural Sciences (SNS) National University of Sciences and Technology (NUST) Islamabad Pakistan
- 5Department of Chemical and Materials Engineering National Kaohsiung University of Science and Technology Kaohsiung Taiwan
- 6Department of Medicinal and Applied Chemistry Kaohsiung Medical University Kaohsiung Taiwan
Abstract
Herein, two conjugated microporous polymers (CMPs), TPET‐FO and TPET‐F2CN, are functionalized with carbonyl and nitrile groups. These porous networks are constructed via the Sonogashira coupling reaction, using 1,1,2,2‐tetrakis(4‐ethynylphenyl)ethene (TPET) as a tetrahedral core, which is coupled with 2,7‐dibromo‐9H‐fluoren‐9‐one (FO‐2Br) and 2‐(2,7‐dibromo‐9H‐fluoren‐9‐ylidene)malononitrile (FL‐2CN‐2Br), respectively. Both CMPs possess well‐developed porosity, as evidenced by their Brunauer–Emmett–Teller surface areas (SBET) of 508 m2 g−1 for TPET‐FO CMP and 682 m2 g−1 for TPET‐F2CN CMP. Among the two materials, the TPET‐F2CN CMP exhibits markedly superior performance. It demonstrates enhanced CO2 uptake capacities of 1.69 and 2.88 mmol g−1 at 298 and 273 K, respectively, significantly exceeding those of the TPET‐FO CMP (0.96 and 1.60 mmol g−1 under identical conditions). In addition, TPET‐F2CN CMP shows outstanding adsorption behavior toward rhodamine B (Rhd B), with an equilibrium adsorption capacity (qe ) of 98.12 mg g− 1 and a maximum monolayer capacity (qm ) of 155.6 mg g− 1, as determined by the Langmuir model. These values are substantially higher than those observed for TPET‐FO CMP. Interaction Region Indicator (IRI) analysis indicated that the adsorption performance of TPET‐F2CN CMP toward CO2 and Rhd B is mainly promoted by stronger non‐covalent interactions and enhanced delocalization of π‐electrons in TPET‐F2CN CMP.
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BibTeX
@article{mohamed2026fluorenone,
title = {{Fluorenone and Fluorenemalononitrile‐Tethered Conjugated Microporous Polymers for Efficient CO2 Uptake and Rhodamine B Removal}},
author = {Mohamed Gamal Mohamed and Ahmed M. Elewa and Nian‐Ping Chen and Ahmed F. Saber and Hira Karim and Yun‐Sheng Ye and Mohsin Ejaz and Cheng‐Wei Huang and Shiao‐Wei Kuo},
journal = {Macromolecular Rapid Communications},
year = {2026},
month = sep,
doi = {10.1002/marc.70428},
url = {https://doi.org/10.1002/marc.70428},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - JOUR
TI - Fluorenone and Fluorenemalononitrile‐Tethered Conjugated Microporous Polymers for Efficient CO2 Uptake and Rhodamine B Removal
AU - Mohamed Gamal Mohamed
AU - Ahmed M. Elewa
AU - Nian‐Ping Chen
AU - Ahmed F. Saber
AU - Hira Karim
AU - Yun‐Sheng Ye
AU - Mohsin Ejaz
AU - Cheng‐Wei Huang
AU - Shiao‐Wei Kuo
PY - 2026
DA - 2026/09/09
JO - Macromolecular Rapid Communications
DO - 10.1002/marc.70428
UR - https://doi.org/10.1002/marc.70428
AB - Herein, two conjugated microporous polymers (CMPs), TPET‐FO and TPET‐F2CN, are functionalized with carbonyl and nitrile groups. These porous networks are constructed via the Sonogashira coupling reaction, using 1,1,2,2‐tetrakis(4‐ethynylphenyl)ethene (TPET) as a tetrahedral core, which is coupled with 2,7‐dibromo‐9H‐fluoren‐9‐one (FO‐2Br) and 2‐(2,7‐dibromo‐9H‐fluoren‐9‐ylidene)malononitrile (FL‐2CN‐2Br), respectively. Both CMPs possess well‐developed porosity, as evidenced by their Brunauer–Emmett–Teller surface areas (SBET) of 508 m2 g−1 for TPET‐FO CMP and 682 m2 g−1 for TPET‐F2CN CMP. Among the two materials, the TPET‐F2CN CMP exhibits markedly superior performance. It demonstrates enhanced CO2 uptake capacities of 1.69 and 2.88 mmol g−1 at 298 and 273 K, respectively, significantly exceeding those of the TPET‐FO CMP (0.96 and 1.60 mmol g−1 under identical conditions). In addition, TPET‐F2CN CMP shows outstanding adsorption behavior toward rhodamine B (Rhd B), with an equilibrium adsorption capacity (qe ) of 98.12 mg g− 1 and a maximum monolayer capacity (qm ) of 155.6 mg g− 1, as determined by the Langmuir model. These values are substantially higher than those observed for TPET‐FO CMP. Interaction Region Indicator (IRI) analysis indicated that the adsorption performance of TPET‐F2CN CMP toward CO2 and Rhd B is mainly promoted by stronger non‐covalent interactions and enhanced delocalization of π‐electrons in TPET‐F2CN CMP.
SN - 1022-1336
SN - 1521-3927
ER -