Chemical sensors with non-covalent surface modification of graphene
申请人:REGENTS OF THE UNIVERSITY OF MINNESOTA
公开号:US11079371B2
公开(公告)日:2021-08-03
Embodiments herein relate to chemical sensors, devices and systems including the same, and related methods. In an embodiment, a medical device is included. The medical device can include a graphene varactor. The graphene varactor can include a graphene layer and a self-assembled monolayer disposed on an outer surface of the graphene layer through π-π stacking interactions. The self-assembled monolayer can provide a Langmuir theta value of at least 0.9. The self-assembled monolayer can include polycyclic aromatic hydrocarbons, tetraphenylporphyrins or derivatives thereof, metallotetraphenylporphyrins, or aromatic cyclodextrins. Other embodiments are also included herein.
The Alkaline Hydrolysis of Polynuclear Methyl Arylacetates
作者:Nancy. Acton、Ernst. Berliner
DOI:10.1021/ja01070a022
日期:1964.8
OXYGEN SENSORS BASED ON HARD-SOFT ACID-BASE RELATIONSHIPS
申请人:Serban Bogdan Catalin
公开号:US20130171027A1
公开(公告)日:2013-07-04
A fluorescence quenching oxygen sensor (
100
) comprises a support (
102
) having coated thereon;
a compound having hard or soft acid groups (
104
); and
one or more pyrene compounds (
106
) represented by
Y—R-Pyrene (I)
attached to the compound having hard or soft basic groups;
wherein Y is a hard or soft basic group and R is an aliphatic linking group having 1 to 19 carbon atoms. The sensor can be used to prepare a fluorescence quenching oxygen detector.
CHEMICAL SENSORS WITH NON-COVALENT SURFACE MODIFICATION OF GRAPHENE
申请人:REGENTS OF THE UNIVERSITY OF MINNESOTA
公开号:US20190257825A1
公开(公告)日:2019-08-22
Embodiments herein relate to chemical sensors, devices and systems including the same, and related methods. In an embodiment, a medical device is included. The medical device can include a graphene varactor. The graphene varactor can include a graphene layer and a self-assembled monolayer disposed on an outer surface of the graphene layer through π-π stacking interactions. The self-assembled monolayer can provide a Langmuir theta value of at least 0.9. The self-assembled monolayer can include polycyclic aromatic hydrocarbons, tetraphenylporphyrins or derivatives thereof, metallotetraphenylporphyrins, or aromatic cyclodextrins. Other embodiments are also included herein.
From Acenaphthenes to (+)-Delavatine A: Visible-Light-Induced Ring Closure of Methyl (α-Naphthyl) Acrylates
Disclosed herein is a visible light mediated cyclization of methyl (α‐naphthyl) acrylates and heteroaromatic analogues yielding substituted acenaphthenes and azaacenaphthenes. This highly functional‐group‐tolerant transformation was put to the test in an enantioselective formal synthesis of delavatine A. Mechanistic details were elucidated by DFT‐calculations revealing an unusual intramolecular H‐transfer