PMID- 32880164 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201002 IS - 1944-8252 (Electronic) IS - 1944-8244 (Linking) VI - 12 IP - 39 DP - 2020 Sep 30 TI - Ultrafast and Highly Sensitive Chemically Functionalized Graphene Oxide-Based Humidity Sensors: Harnessing Device Performances via the Supramolecular Approach. PG - 44017-44025 LID - 10.1021/acsami.0c11236 [doi] AB - Humidity sensors have been gaining increasing attention because of their relevance for well-being. To meet the ever-growing demand for new cost-efficient materials with superior performances, graphene oxide (GO)-based relative humidity sensors have emerged recently as low-cost and highly sensitive devices. However, current GO-based sensors suffer from important drawbacks including slow response and recovery, as well as poor stability. Interestingly, reduced GO (rGO) exhibits higher stability, yet accompanied by a lower sensitivity to humidity due to its hydrophobic nature. With the aim of improving the sensing performances of rGO, here we report on a novel generation of humidity sensors based on a simple chemical modification of rGO with hydrophilic moieties, i.e., triethylene glycol chains. Such a hybrid material exhibits an outstandingly improved sensing performance compared to pristine rGO such as high sensitivity (31% increase in electrical resistance when humidity is shifted from 2 to 97%), an ultrafast response (25 ms) and recovery in the subsecond timescale, low hysteresis (1.1%), excellent repeatability and stability, as well as high selectivity toward moisture. Such highest-key-performance indicators demonstrate the full potential of two-dimensional (2D) materials when decorated with suitably designed supramolecular receptors to develop the next generation of chemical sensors of any analyte of interest. FAU - Anichini, Cosimo AU - Anichini C AD - Universite de Strasbourg, CNRS, ISIS, 8 allee Gaspard Monge, 67000 Strasbourg, France. FAU - Aliprandi, Alessandro AU - Aliprandi A AD - Universite de Strasbourg, CNRS, ISIS, 8 allee Gaspard Monge, 67000 Strasbourg, France. FAU - Gali, Sai Manoj AU - Gali SM AD - CMN, Universite de Mons, Place du Parc 20, 7000 Mons, Belgium. FAU - Liscio, Fabiola AU - Liscio F AD - Istituto per la Microelettronica e Microsistemi (IMM)-CNR, via Gobetti 101, 40129 Bologna, Italy. FAU - Morandi, Vittorio AU - Morandi V AUID- ORCID: 0000-0002-8533-1540 AD - Istituto per la Microelettronica e Microsistemi (IMM)-CNR, via Gobetti 101, 40129 Bologna, Italy. FAU - Minoia, Andrea AU - Minoia A AD - CMN, Universite de Mons, Place du Parc 20, 7000 Mons, Belgium. FAU - Beljonne, David AU - Beljonne D AUID- ORCID: 0000-0002-2989-3557 AD - CMN, Universite de Mons, Place du Parc 20, 7000 Mons, Belgium. FAU - Ciesielski, Artur AU - Ciesielski A AUID- ORCID: 0000-0003-3542-4092 AD - Universite de Strasbourg, CNRS, ISIS, 8 allee Gaspard Monge, 67000 Strasbourg, France. FAU - Samori, Paolo AU - Samori P AUID- ORCID: 0000-0001-6256-8281 AD - Universite de Strasbourg, CNRS, ISIS, 8 allee Gaspard Monge, 67000 Strasbourg, France. LA - eng PT - Journal Article DEP - 20200916 PL - United States TA - ACS Appl Mater Interfaces JT - ACS applied materials & interfaces JID - 101504991 SB - IM OTO - NOTNLM OT - chemical functionalization OT - chemical sensing OT - graphene oxide OT - humidity sensing OT - supramolecular chemistry EDAT- 2020/09/04 06:00 MHDA- 2020/09/04 06:01 CRDT- 2020/09/04 06:00 PHST- 2020/09/04 06:00 [pubmed] PHST- 2020/09/04 06:01 [medline] PHST- 2020/09/04 06:00 [entrez] AID - 10.1021/acsami.0c11236 [doi] PST - ppublish SO - ACS Appl Mater Interfaces. 2020 Sep 30;12(39):44017-44025. doi: 10.1021/acsami.0c11236. Epub 2020 Sep 16.