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

被引：9

作者：

Das, Gobinda ^{[1
]}

Ibrahim, Fayrouz Abou ^{[1
]}

Khalil, Zahraa Abou ^{[2
]}

Bazin, Philippe ^{[2
]}

Chandra, Falguni ^{[3
]}

Abdulhalim, Rasha G. ^{[1
]}

Prakasam, Thirumurugan ^{[1
]}

Das, Akshaya Kumar ^{[1
]}

Sharma, Sudhir Kumar ^{[4
]}

Varghese, Sabu ^{[5
]}

Kirmizialtin, Serdal ^{[1
]}

Jagannathan, Ramesh ^{[4
]}

Saleh, Na'il ^{[3
,6
]}

Benyettou, Farah ^{[1
]}

Roz, Mohamad El ^{[2
]}

Addicoat, Matthew ^{[7
]}

Olson, Mark A. ^{[8
]}

Rao, D. S. Shankar ^{[9
]}

Prasad, S. Krishna ^{[10
]}

Trabolsi, Ali ^{[1
,10
]}

机构：

[1] New York Univ Abu Dhabi NYUAD, Chem Program, Abu Dhabi 129188, U Arab Emirates

[2] Univ Caen, Lab Catalyse & Spectrochi, CNRS, Ensicaen, 6 Blvd Marechal Juin, F-14050 Caen, France

[3] United Arab Emirates Univ, Coll Sci, Chem Dept, POB 15551, Al Ain, U Arab Emirates

[4] New York Univ Abu Dhabi NYUAD, Engn Div, Abu Dhabi 129188, U Arab Emirates

[5] New York Univ Abu Dhabi, Abu Dhabi 129188, U Arab Emirates

[6] United Arab Emirates Univ, Natl Water & Energy Ctr, POB 15551, Al Ain, U Arab Emirates

[7] Nottingham Trent Univ, Sch Sci & Technol, Clifton Lane, Nottingham NG11 8NS, England

[8] Texas A&M Univ Corpus Christi, Dept Phys & Environm Sci, 6300 Ocean Dr, Corpus Christi, TX 78412 USA

[9] Ctr Nano & Soft Matter Sci CeNS, Survey 7, Bengaluru 562162, India

[10] New York Univ Abu Dhabi NYUAD, NYUAD Water Res Ctr, Abu Dhabi 129188, U Arab Emirates

来源：

SMALL | 2024年 / 20卷 / 32期

基金：

英国工程与自然科学研究理事会;

关键词：

humidity sensor; ionic covalent organic framework; stimuli-responsive materials; temperature sensor; GRAPHENE OXIDE; WATER; FLUORESCENT; LUMINESCENT; CRYSTAL; NANOSHEETS; ULTRAFAST; POLYMER;

D O I：

10.1002/smll.202311064

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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. A versatile cationic covalent organic framework (TG-DFP COF) and the material serve as a solid-state sensor for fast and accurate measurement of temperature and humidity. The exceptional water sensitivity of the COF material has also led us to consider its potential as a candidate for the dection of trace amounts of water in organic solvents. image

引用

页数：11

共 110 条

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