| N.N. |
<1970 |
cellulose-immobilized pH
indicators (azo dyes); work performed in industry |
|
| Harper |
1975 |
reusable glass-bound indicators |
(15) |
| Lübbers
et al. |
1977 |
nanoencapsulated fluorescent
pH indicators |
(31) |
| Peterson et al. |
1980 |
first fiber optic pH sensor |
(32) |
| Goldstein
et al. |
1980 |
miniature fiber optic reflectometric
pH sensor for blood |
(33) |
| Tait et al. |
1982 |
fiber optic in vivo pH sensor |
(34) |
| Saari and Seitz |
1982 |
pH sensor
based on immobilized
fluorescein |
(24) |
| Opitz and Lübbers |
1983 |
fluorometric planar sensor
for pH and ionic strength |
(28) |
| Suidan
et al. |
1983 |
fiber optic reflectometric
pH sensor for blood |
(35) |
| Wolfbeis et al. |
1983 |
evaluation of fluorescent
pH indicator probes for use in optical sensors |
(36) |
| Kirkbright
et al. |
1984 |
immobilization of reflectometric
pH indicators on ion exchange polymers |
(19) |
| Zhujun
and Seitz |
1984 |
fluorometric pH sensor using
HPTS as an indicator |
(37) |
| Goldfinch and Lowe |
1984 |
solid-phase optoelectronic
pH sensor |
(38) |
| Offenbacher et al. |
1986 |
fluorometric sensors for
near-neutral pH values |
(25) |
| Wolfbeis et al. |
1986 |
fluorometric sensor for
simultaneous monitoring of ionic strength and physiological pH values |
(29) |
| Scheggi and Baldini |
1986 |
comparison of pH sensing
by absorption, reflection, and fluorescence |
(39) |
| Woods
et al. |
1986 |
optical pH sensing at low
buffering capacity |
(40) |
| Gehrich et al. |
1986 |
intravascular blood pH monitoring
system (fluorescence based) |
(41) |
| Janata |
1987 |
assessment of the accuracy
and precision of optical pH sensors |
(27) |
| Grattan
et al. |
1987 |
2-wavelength fiber optic
pH sensor |
(21) |
| Kawabata et al. |
1987 |
fiber optic pH sensor with
monolayer indicator |
(42) |
| Boisdé and Pérez |
1987 |
miniature pH sensor (1 mm) |
(43) |
| Jordan et al. |
1987 |
pH sensor exploiting FRET |
(44) |
| Monici
et al. |
1987 |
pH sensor for seawater monitoring |
(45) |
| Wolfbeis and Marhold |
1987 |
pH indicators for an extended
range |
(46) |
| Attridge et al. |
1987 |
pH sensing via refractive
index |
(47) |
| Jones and Porter |
1988 |
immobilization of pH indicators
on cellulose acetate |
(23) |
| Knobbe et al. |
1988 |
immobilization of pH probes
in sol–gels |
(48) |
| Posch et al. |
1989 |
gastric pH sensor (pH 0–7) |
(49) |
| Carey et al. |
1989 |
sensor for high acidities |
(50) |
| Carey
and Jorgensen |
1991 |
sensor for high acidities
based on fluorescent polymers |
(51) |
| Gabor
and Walt |
1991 |
pH sensing via inner filter
effects |
(52) |
| Tan et al. |
1992 |
submicrometer intracellular
pH sensor |
(53) |
| Werner et al. |
1993 |
optical sensor for pH 10–13;
hydrolyzed cellulose acetate |
(54) |
| Ge et
al. |
1993 |
fiber optic evanescent wave
pH sensor |
(55) |
| Werner et al. |
1993 |
first use of a partially
hydrolyzed thin cellulose triacetate film on a polyester support;
now widely used in optical pH sensors |
(54) |
| Parker
et al. |
1993 |
pH sensor using the self-referencing
dye SNARF |
(56) |
| Mohr et al. |
1994 |
azo indicators immobilized
via vinylsulfonyl groups on cellulose films (on polyester support) |
(16, 17) |
| McCurley |
1994 |
optical sensing of pH values
based on the use of swelling hydrophilic polymers |
(57) |
| Bronk and Walt |
1994 |
pH sensor array using fiber
bundles |
(58) |
| Michie et al. |
1995 |
distributed pH sensor using
fiber optics and swellable polymers |
(59) |
| Koncki
et al. |
1995 |
pH sensor using near-infrared
dye in PVC |
(60) |
| Schulman et al. |
1995 |
wide-range pH sensor based
on photodissociation |
(61) |
| Zhang et al. |
1995 |
pH sensor based on reflectance
of swelling polymers |
(62) |
| Taib et al. |
1996 |
pH sensor range extended
via artificial neural network |
(63) |
| de Marcos
et al. |
1996 |
polypyrrole films as a pH
sensor material |
(64) |
| Draxler and Lippitsch, Werner
et al. |
1996 |
first PET-based pH sensing
schemes |
(65−67) |
| Pringsheim et al. |
1997 |
various polyanilines as
a sensor material for absorptiometric sensing of pH |
(68) |
| Papkovsky et al. |
1997 |
PVC sensor membranes containing
porphyrins |
(69) |
| Safavi and Abdollahi |
1998 |
first optical sensor for
very high pH values |
(70) |
