Enhancement of charge transfer between graphene and donor-π-acceptor molecule for ultrahigh sensing performance

Wenle Pei; Tingting Zhang; Yao Wang; Zhuo Chen; Ahmad Umar; Hao Li; Wei Guo

doi:10.1039/c7nr04209d

Enhancement of charge transfer between graphene and donor-π-acceptor molecule for ultrahigh sensing performance

Wenle Pei, Tingting Zhang, Yao Wang^*, Zhuo Chen, Ahmad Umar, Hao Li, Wei Guo

^*Corresponding author for this work

School of Physics

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

In this work, we report the formation of a supramolecular assembly of graphene with a donor-π-acceptor (D-π-A) molecule to detect low concentration NO₂. 5-Aminonaphthalene-1-sulfonic acid (ANS) was used herein to π-π stack with reduced graphene oxide (rGO), the resulting π-conjugated bridge being linked by a donor unit (-NH₂) and an acceptor unit (-SO₃H). The prepared ANS-rGO shows the highest response (R_a/R_g = 13.2 to 10 ppm NO₂) so far among the reported organic molecule modified graphene materials, and excellent selectivity and reliable reversibility at room temperature. Furthermore, as revealed through the charge density difference calculation, it is the effective enhancement of charge transfer between ANS and graphene that should be responsible for the sharp improvement of NO₂ gas response of the material. Thus, for the first time, we demonstrate that supramolecular assembly of a D-π-A molecule and graphene provides a facile and effective approach to fabrication of high performance graphene-based gas sensors.

Original language	English
Pages (from-to)	16273-16280
Number of pages	8
Journal	Nanoscale
Volume	9
Issue number	42
DOIs	https://doi.org/10.1039/c7nr04209d
Publication status	Published - 14 Nov 2017

Access to Document

10.1039/c7nr04209d

Cite this

@article{c42cb0e8aa0e4155bc9e7efffd28047e,

title = "Enhancement of charge transfer between graphene and donor-π-acceptor molecule for ultrahigh sensing performance",

abstract = "In this work, we report the formation of a supramolecular assembly of graphene with a donor-π-acceptor (D-π-A) molecule to detect low concentration NO2. 5-Aminonaphthalene-1-sulfonic acid (ANS) was used herein to π-π stack with reduced graphene oxide (rGO), the resulting π-conjugated bridge being linked by a donor unit (-NH2) and an acceptor unit (-SO3H). The prepared ANS-rGO shows the highest response (Ra/Rg = 13.2 to 10 ppm NO2) so far among the reported organic molecule modified graphene materials, and excellent selectivity and reliable reversibility at room temperature. Furthermore, as revealed through the charge density difference calculation, it is the effective enhancement of charge transfer between ANS and graphene that should be responsible for the sharp improvement of NO2 gas response of the material. Thus, for the first time, we demonstrate that supramolecular assembly of a D-π-A molecule and graphene provides a facile and effective approach to fabrication of high performance graphene-based gas sensors.",

author = "Wenle Pei and Tingting Zhang and Yao Wang and Zhuo Chen and Ahmad Umar and Hao Li and Wei Guo",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry.",

year = "2017",

month = nov,

day = "14",

doi = "10.1039/c7nr04209d",

language = "English",

volume = "9",

pages = "16273--16280",

journal = "Nanoscale",

issn = "2040-3364",

publisher = "Royal Society of Chemistry",

number = "42",

}

TY - JOUR

T1 - Enhancement of charge transfer between graphene and donor-π-acceptor molecule for ultrahigh sensing performance

AU - Pei, Wenle

AU - Zhang, Tingting

AU - Wang, Yao

AU - Chen, Zhuo

AU - Umar, Ahmad

AU - Li, Hao

AU - Guo, Wei

PY - 2017/11/14

Y1 - 2017/11/14

N2 - In this work, we report the formation of a supramolecular assembly of graphene with a donor-π-acceptor (D-π-A) molecule to detect low concentration NO2. 5-Aminonaphthalene-1-sulfonic acid (ANS) was used herein to π-π stack with reduced graphene oxide (rGO), the resulting π-conjugated bridge being linked by a donor unit (-NH2) and an acceptor unit (-SO3H). The prepared ANS-rGO shows the highest response (Ra/Rg = 13.2 to 10 ppm NO2) so far among the reported organic molecule modified graphene materials, and excellent selectivity and reliable reversibility at room temperature. Furthermore, as revealed through the charge density difference calculation, it is the effective enhancement of charge transfer between ANS and graphene that should be responsible for the sharp improvement of NO2 gas response of the material. Thus, for the first time, we demonstrate that supramolecular assembly of a D-π-A molecule and graphene provides a facile and effective approach to fabrication of high performance graphene-based gas sensors.

AB - In this work, we report the formation of a supramolecular assembly of graphene with a donor-π-acceptor (D-π-A) molecule to detect low concentration NO2. 5-Aminonaphthalene-1-sulfonic acid (ANS) was used herein to π-π stack with reduced graphene oxide (rGO), the resulting π-conjugated bridge being linked by a donor unit (-NH2) and an acceptor unit (-SO3H). The prepared ANS-rGO shows the highest response (Ra/Rg = 13.2 to 10 ppm NO2) so far among the reported organic molecule modified graphene materials, and excellent selectivity and reliable reversibility at room temperature. Furthermore, as revealed through the charge density difference calculation, it is the effective enhancement of charge transfer between ANS and graphene that should be responsible for the sharp improvement of NO2 gas response of the material. Thus, for the first time, we demonstrate that supramolecular assembly of a D-π-A molecule and graphene provides a facile and effective approach to fabrication of high performance graphene-based gas sensors.

UR - http://www.scopus.com/inward/record.url?scp=85032959449&partnerID=8YFLogxK

U2 - 10.1039/c7nr04209d

DO - 10.1039/c7nr04209d

M3 - Article

C2 - 29046916

AN - SCOPUS:85032959449

SN - 2040-3364

VL - 9

SP - 16273

EP - 16280

JO - Nanoscale

JF - Nanoscale

IS - 42

ER -

Enhancement of charge transfer between graphene and donor-π-acceptor molecule for ultrahigh sensing performance

Abstract

Access to Document

Other files and links

Fingerprint

Cite this