Detection of gases and organic vapors by cellulose-based sensors

Abstract

The growing interest in the development of cost-effective, straightforward, and rapid analytical systems has found cellulose-based materials, including cellulose derivatives, cellulose-based gels, nanocellulosic materials, and the corresponding (nano)cellulose-based composites, to be valuable platforms for sensor development. The present work presents recent advances in the development of cellulose-based sensors for the determination of volatile analytes and derivatives of analytical relevance. In particular, strategies described in the literature for the fabrication and modification of cellulose-based substrates with responsive materials are summarized. In addition, selected contributions reported in the field of paper-based volatile sensors are discussed, with a particular emphasis on quick response (QR) code paper-based platforms, intelligent films for food freshness monitoring, and sensor arrays for volatile discrimination purposes. Furthermore, analytical strategies devised for the determination of ionic species by in situ generation of volatile derivatives in both paper-based analytical devices (PADs) and microfluidic PADs will also be described. Graphical abstract

Thermoreversible Transformations of the Cyanosubstituted 2‐Oxopyrrole Derivative by the Action of Amines for the Creation of Novel High‐Contrast Coloration/Decoloration Systems

“…[14][15][16][17][18][19] Systems with a colorimetric response have a significant advantage because they allow facile naked-eye detection of an amine by simple color change of the sensing material. Moreover, optical sensors can be manufactured as cellulose-based [20,21] or thin-film materials, [22] which are convenient for portable use or, for example, for the integration into food packaging.…”

Microfluidics in environmental analysis: advancements, challenges, and future prospects for rapid and efficient monitoring

“…Previous research has extensively explored various microfluidic platforms to monitor and detect contamination in soil, 18–21 water, 22–24 and air 25–28 matrices. Notably, techniques like absorbance-, electrochemical-, fluorescence-, and chemiluminescence-based microfluidic systems have seen significant progress.…”

“…[14][15][16] The versatility of microfluidic devices are further enhanced by the ability to perform sample pretreatment and preconcentration directly within the device. 17 Previous research has extensively explored various microfluidic platforms to monitor and detect contamination in soil, [18][19][20][21] water, [22][23][24] and air [25][26][27][28] matrices. Notably, techniques like absorbance-, electrochemical-, fluorescence-, and chemiluminescence-based microfluidic systems have seen significant progress.…”

Broadband paper-photodetectors for visible & UV light detection

“…Among them, paper or cellulose paper has been widely utilized as a substrate for various paper-based electronics 19–21 and sensors. 22–28 Due to the inherent bio-friendly, eco-friendly, porous, flexible, and scalable nature of cellulose papers, numerous paper-based sensors have been developed and extensively discussed in various review articles. 22–28 These sensors encompass a wide range of applications, including bacteria detection, 23 clinical diagnostics, 24–26 environmental testing, 24 food analysis, 24,25 humidity sensing, 27 gas or chemical sensing, 27,28 pressure sensing, 26 strain sensing, 26,27,29 flexible sensing, 26 and wearable sensing.…”

“…22–28 Due to the inherent bio-friendly, eco-friendly, porous, flexible, and scalable nature of cellulose papers, numerous paper-based sensors have been developed and extensively discussed in various review articles. 22–28 These sensors encompass a wide range of applications, including bacteria detection, 23 clinical diagnostics, 24–26 environmental testing, 24 food analysis, 24,25 humidity sensing, 27 gas or chemical sensing, 27,28 pressure sensing, 26 strain sensing, 26,27,29 flexible sensing, 26 and wearable sensing. 25,26 Additionally, the unique properties of paper, such as its porosity, dielectric properties, and flexibility, have also been harnessed for the development of flexible pressure sensors.…”