TY - JOUR
T1 - Effective Strategy for Colorimetric and Fluorescence Sensing of Phosgene Based on Small Organic Dyes and Nanofiber Platforms
AU - Hu, Ying
AU - Chen, Liyan
AU - Jung, Hyeseung
AU - Zeng, Yiying
AU - Lee, Songyi
AU - Swamy, Kunemadihalli Mathada Kotraiah
AU - Zhou, Xin
AU - Kim, Myung Hwa
AU - Yoon, Juyoung
N1 - Publisher Copyright:
© 2016 American Chemical Society.
PY - 2016/8/31
Y1 - 2016/8/31
N2 - Three o-phenylendiamine (OPD) derivatives, containing 4-chloro-7-nitrobenzo[c][1,2,5]oxadiazole (NBD-OPD), rhodamine (RB-OPD), and 1,8-naphthalimide (NAP-OPD) moieties, were prepared and tested as phosgene chemosensors. Unlike previously described methods to sense this toxic agent, which rely on chemical processes that transform alcohols and amines to respective phosphate esters and phosphoramides, the new sensors operate through a benzimidazolone-forming reaction between their OPD groups and phosgene. These processes promote either naked eye visible color changes and/or fluorescence intensity enhancements in conjunction with detection limits that range from 0.7 to 2.8 ppb. NBD-OPD and RB-OPD-embedded polymer fibers, prepared using the electrospinning technique, display distinct color and fluorescence changes upon exposure to phosgene even in the solid state.
AB - Three o-phenylendiamine (OPD) derivatives, containing 4-chloro-7-nitrobenzo[c][1,2,5]oxadiazole (NBD-OPD), rhodamine (RB-OPD), and 1,8-naphthalimide (NAP-OPD) moieties, were prepared and tested as phosgene chemosensors. Unlike previously described methods to sense this toxic agent, which rely on chemical processes that transform alcohols and amines to respective phosphate esters and phosphoramides, the new sensors operate through a benzimidazolone-forming reaction between their OPD groups and phosgene. These processes promote either naked eye visible color changes and/or fluorescence intensity enhancements in conjunction with detection limits that range from 0.7 to 2.8 ppb. NBD-OPD and RB-OPD-embedded polymer fibers, prepared using the electrospinning technique, display distinct color and fluorescence changes upon exposure to phosgene even in the solid state.
KW - colorimetric sensor
KW - fluorescent chemosensor
KW - nanofiber
KW - phosgene sensor
KW - toxic gas sensor
UR - http://www.scopus.com/inward/record.url?scp=84985914466&partnerID=8YFLogxK
U2 - 10.1021/acsami.6b07138
DO - 10.1021/acsami.6b07138
M3 - Article
AN - SCOPUS:84985914466
SN - 1944-8244
VL - 8
SP - 22246
EP - 22252
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 34
ER -