Effect of external reflectors on radiation profile of grating coupled surface emitting lasers

Yu, Siu Fung; Zhang, L.M.; Plumb, R.G.; Carroll, J.E.

doi:10.1049/ip-j.1993.0006

Cited by 18 publications

(12 citation statements)

References 16 publications

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“…[27,59] In particular, the experiments performed here are not limited to photoCORMs but could be readily applied to other photo-activated prodrugs including platinum anticancer complexes and H2S or CS2 releasing therapeutical agents. [60][61][62] Finally, we note that our results also represent the first direct gas-phase measurement of the wavelength-dependent photochemical branching ratios (quantum ion yields) for a transition metal carbonyl complex. The spectra presented here therefore provide a new benchmark against which high-level excited state calculations of this challenging group of molecular systems can be compared.…”

Section: Resultsmentioning

confidence: 56%

Direct Measurement of the Visible to UV Photodissociation Processes for the PhotoCORM TryptoCORM

Cercola¹,

Fischer²,

Scherman³

et al. 2019

Preprint

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We apply laser photodissociation spectroscopy in the gas phase to TryptoCORM, a known photoCORM that has been shown to destroy Escherichia coli upon visible-light activation. Our experiments allow us to fully map TryptoCORM’s photochemistry across a wide wavelength range by using novel laser-interfaced mass spectrometry (LIMS). We complement these measurements with Cryogenic Ion Vibrational Spectroscopy (CIVS), to structurally characterise gaseous TryptoCORM.

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Section: Resultsmentioning

confidence: 56%

Direct Measurement of the Visible to UV Photodissociation Processes for the PhotoCORM TryptoCORM

Cercola¹,

Fischer²,

Scherman³

et al. 2019

Preprint

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“…Taking inspiration from Wang and co-workers and their use of a "trimethyl lock" [48] system that was shown to release persulfides, and other RSS, in response to esterases, [49][50][51] we hypothesized that a complementary persulfide donor that responds to ROS may be feasible if the acetate functional group in their design were replaced with an H2O2-responsive moiety, such as a boronate ester. Then, upon boronate ester oxidation, and given the presence of a gem-dimethyl group (i.e.…”

Section: Resultsmentioning

confidence: 99%

An Innovative Hydrogen Peroxide-Sensing Scaffold and Insights Towards its Potential as an ROS-Activated Persulfide Donor

Hankins¹,

Suarez²,

Kalk³

et al. 2020

Preprint

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Reactive sulfur species, such as hydrogen sulfide, persulfides, and polysulfides, have recently emerged as key signaling molecules and important physiological mediators within mammalian systems. To further assess the therapeutic potential of their exogenous administration, we report on the development of a unique hydrogen peroxide (H2O2)-sensing motif and its capacity for providing cellular protection against oxidative stress while serving as a reactive oxygen species (ROS)-activated persulfide donor. With the strategic implementation of a gem-dimethyl group that promotes both cyclization and stability, we found the initial rate of payload release from this newly derived scaffold to be directly proportional to the concentration of H2O2 and to proceed via an unprecedented pathway that avoids the production of electrophilic byproducts, a severe limitation that has plagued the physiological application of previous designs.

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“…The results suggested that H 2 S failed to generate H 2 S n and to elevate the protein expression of TRPA1 channel, which is possibly due to lack of sufficient oxidant . Thus, followed by the experiments above, we next stimulated the brain slices by H 2 O 2 after addition of H 2 S, because H 2 O 2 has been previously reported to facilitate the endogenous generation of H 2 S n from H 2 S . As expected, the amount of H 2 S was gradually reduced with increasing concentration of H 2 O 2 , but remarkable enhancement of H 2 S n amount was observed (Figure G).…”

Section: Resultsmentioning

confidence: 99%

“…To date, only a few fluorescent probes have been reported for the determination of H 2 S n . However, to the best of our knowledge, no efficient approach has been reported for in vivo determination of H 2 S n .…”

Section: Introductionmentioning

confidence: 99%

Rational Design of Specific Recognition Molecules for Simultaneously Monitoring of Endogenous Polysulfide and Hydrogen Sulfide in the Mouse Brain

et al. 2019

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Ab iosensor was created for the simultaneous monitoring of endogenous H 2 S n and H 2 Si nm ouse brains and exploring their roles in activation of the TRPA1 channel under two types of brain disease models:i schemia and Alzheimersd isease (AD). Based on DFT calculations and electrochemical measurements,t wo probes,3 ,4-bis((2-fluoro-5-nitrobenzoyl)oxy)-benzoic acid (M PS-1 )a nd N-(4-(2,5-dinitrophenoxy) phenyl)-5-(1, 2-dithiolan-3-yl)pentanamide (M HS-1 ), were synthesized for specific recognition of H 2 S n and H 2 S. Through co-assembly of the two probes at the mesoporous gold film with good anti-biofouling ability and electrocatalytic activity,this microsensor showed high selectivity for H 2 S n and H 2 Sa gainst potential biological interferences.T he biosensor can simultaneously determine the concentration of H 2 S n from 0.2 to 50 mm,a sw ell as that of H 2 Sf rom 0.2 to 40 mm.T he expression of TRPA1 protein positively correlated with levels of H 2 S n under both ischemiaa nd AD.

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Effect of external reflectors on radiation profile of grating coupled surface emitting lasers

Cited by 18 publications

References 16 publications

Direct Measurement of the Visible to UV Photodissociation Processes for the PhotoCORM TryptoCORM

Direct Measurement of the Visible to UV Photodissociation Processes for the PhotoCORM TryptoCORM

An Innovative Hydrogen Peroxide-Sensing Scaffold and Insights Towards its Potential as an ROS-Activated Persulfide Donor

Rational Design of Specific Recognition Molecules for Simultaneously Monitoring of Endogenous Polysulfide and Hydrogen Sulfide in the Mouse Brain

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