Ionic Covalent Organic Framework as a Dual Functional Sensor for Temperature and Humidity.

Autor: Das G; Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, 129188, United Arab Emirates., Ibrahim FA; Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, 129188, United Arab Emirates., Khalil ZA; Laboratoire Catalyse et Spectrochimie, CNRS, Ensicaen, Université de Caen, 6, Boulevard Maréchal Juin 14050, Caen, France., Bazin P; Laboratoire Catalyse et Spectrochimie, CNRS, Ensicaen, Université de Caen, 6, Boulevard Maréchal Juin 14050, Caen, France., Chandra F; Chemistry Department, College of Science, United Arab Emirates University, P.O. Box 15551, Al-Ain, United Arab Emirates., AbdulHalim RG; Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, 129188, United Arab Emirates., Prakasam T; Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, 129188, United Arab Emirates., Das AK; Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, 129188, United Arab Emirates., Sharma SK; Engineering Division, New York University Abu Dhabi (NYUAD), Abu Dhabi, 129188, United Arab Emirates., Varghese S; New York University Abu Dhabi, Abu Dhabi, 129188, United Arab Emirates., Kirmizialtin S; Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, 129188, United Arab Emirates., Jagannathan R; Engineering Division, New York University Abu Dhabi (NYUAD), Abu Dhabi, 129188, United Arab Emirates., Saleh N; Chemistry Department, College of Science, United Arab Emirates University, P.O. Box 15551, Al-Ain, United Arab Emirates.; National Water and Energy center, United Arab Emirates University, P.O. Box 15551, Al Ain, United Arab Emirates., Benyettou F; Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, 129188, United Arab Emirates., Roz ME; Laboratoire Catalyse et Spectrochimie, CNRS, Ensicaen, Université de Caen, 6, Boulevard Maréchal Juin 14050, Caen, France., Addicoat M; School of Science and Technology, Nottingham Trent University, Clifton Lane, NG11 8NS, Nottingham, NG118NS, UK., Olson MA; Department of Physical and Environmental Sciences, Texas A&M University Corpus Christi, 6300 Ocean Dr, Corpus Christi, TX, 78412, USA., Rao DSS; Centre for Nano and Soft Matter Sciences(CeNS), Arkavathi, Survey No.7, Shivanapura, Dasanapura Hobli, Bengaluru, 562162, India., Prasad SK; Centre for Nano and Soft Matter Sciences(CeNS), Arkavathi, Survey No.7, Shivanapura, Dasanapura Hobli, Bengaluru, 562162, India., Trabolsi A; Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, 129188, United Arab Emirates.; NYUAD Water Research Center, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, 129188, United Arab Emirates.
Jazyk: angličtina
Zdroj: Small (Weinheim an der Bergstrasse, Germany) [Small] 2024 Aug; Vol. 20 (32), pp. e2311064. Date of Electronic Publication: 2024 Feb 23.
DOI: 10.1002/smll.202311064
Abstrakt: Visual sensing of humidity and temperature by solids plays an important role in the everyday life and in industrial processes. Due to their hydrophobic nature, most covalent organic framework (COF) sensors often exhibit poor optical response when exposed to moisture. To overcome this challenge, the optical response is set out to improve, to moisture by incorporating H-bonding ionic functionalities into the COF network. A highly sensitive COF, consisting of guanidinium and diformylpyridine linkers (TG-DFP), capable of detecting changes in temperature and moisture content is fabricated. The hydrophilic nature of the framework enables enhanced water uptake, allowing the trapped water molecules to form a large number of hydrogen bonds. Despite the presence of non-emissive building blocks, the H-bonds restrict internal bond rotation within the COF, leading to reversible fluorescence and solid-state optical hydrochromism in response to relative humidity and temperature.
(© 2024 Wiley‐VCH GmbH.)
Databáze: MEDLINE
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