In situ functionalization of gallium nitride powder with a porphyrin dye

Pearce, Brady L.; Wilkins, Stewart J.; Rahn, Matthew S.; Ivanisevic, Albena

doi:10.1557/jmr.2015.152

Cited by 4 publications

(4 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Fourier transformed‐infrared spectroscopy (FT‐IR) of the in situ and ex situ samples was investigated to explore the presence of functional organic groups from the pophyrin as well as vibrational frequencies associated with GaOOH. The use of FT‐IR for the determination of TTP‐PO 3 presence on GaN was previously used (Pearce et al, ). Figure displays the spectra of clean GaOOH by itself as well as the in situ and ex situ GaOOH/TTP‐PO 3 .…”

Section: Resultsmentioning

confidence: 99%

“…The attachment of dye molecules on the surface of wide bandgap semiconductors adds functionality to the material with applications in photovoltaics and biosensors (Pearce et al, ). Porphyrin molecules provide a highly studied dye which is especially useful for understanding attachment mechanisms and stability when incorporated with semiconductors.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

In situ and ex situ functionalization of nanostructured gallium oxy‐hydroxide with a porphyrin dye

Pearce¹,

Berg²,

Rahn³

et al. 2016

Scanning

Self Cite

View full text Add to dashboard Cite

The surface attachment of a porphyrin dye to nanocrystalline GaOOH was performed using two routes of solution-based functionalization. The first method of functionalization utilized an in situ incorporation of dissolved porphyrin salt in solution during the microwave synthesis step. Additionally, synthesized GaOOH nanorods were mixed in porphyrin solution after the microwave process to make an ex situ GaOOH/TTP-PO- . X-ray photoelectron spectroscopy confirmed the presence of expected surface species and provided evidence of increased surface coverage of TTP-PO on GaOOH in the ex situ- GaOOH/TTP-PO as compared to the in situ one. Size and morphology changes were investigated using SEM and, along with analysis of XRD, the in situ samples showed larger crystallite sizes. This was confirmed with PL due to the higher bandgap energy evident in the ex situ GaOOH/TTP-PO compared to the in situ sample. A stability study was performed using fluorescence spectroscopy which indicated no leaching of porphyrin from the in situ GaOOH/TTP-PO . However, porphyrin leaching was evident from the ex situ GaOOH/TTP-PO sample. The stability of the in situ GaOOH/TTP-PO makes it attractive for a number of interfacial applications. SCANNING 38:671-683, 2016. © 2016 Wiley Periodicals, Inc.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

In situ and ex situ functionalization of nanostructured gallium oxy‐hydroxide with a porphyrin dye

Pearce¹,

Berg²,

Rahn³

et al. 2016

Scanning

Self Cite

View full text Add to dashboard Cite

show abstract

“…Here, direct interaction with the target molecule or prior modification through specific molecules is possible. The immobilization of probe DNA [102], bonding of proteins [103] (see figure 1), sensitization with dye molecules [37] or other functional molecules and/or nanoparticles have been reported in literature.…”

Section: Strategies For Chemical Surface Functionalization Of Gan Wit...mentioning

confidence: 99%

GaN meets organic: technologies and devices based on gallium-nitride/organic hybrid structures

Meierhofer

Krieg

Voss

2018

Semicond. Sci. Technol.

View full text Add to dashboard Cite

This article discusses the state-of-the-art of GaN-based inorganic/organic structures and devices, and shows where hybrid approaches have allowed for new fields of applications for the III-nitride material system. After a brief introduction to GaN, different strategies for the preparation of hybrid GaN-organic structures are reviewed. Recent results from the fields of hybrid electronics and hybrid optoelectronics with the GaN material system as the inorganic component are discussed in the following sections. Finally, a brief summary of results in the field of hybrid sensing devices based on the GaN platform is given.

show abstract

“…Particularly, the native hydroxide layer present on the materials provides an effective site for the attachment of organic molecules with functional side groups such as phosphonic and carboxylic groups. 14 The surface attachment ensures long term stability of the interface between the two molecules. In this study, the functionalization of AlOOH and GaOOH nanostructured materials with L-lysine was performed.…”

Section: Introductionmentioning

confidence: 99%

Aqueous stability of nanostructured aluminum and gallium oxyhydroxide before and after functionalization with lysine

et al. 2016

Self Cite

View full text Add to dashboard Cite

Composites of nanostructured aluminum and gallium oxyhydroxide (AlOOH and GaOOH) and L-lysine were synthesized using an environmentally friendly approach. These composites were investigated to determine the effects of the functionalization on the aqueous stability and leaching of aluminum and gallium. The organic and inorganic components present in the samples were assessed with X-Ray photoelectron spectroscopy (XPS) and Fourier transformed-infrared spectroscopy (FT-IR). In the GaOOH-lysine composite, XPS provided evidence of both the presence of gallium and lysine. Crystallographic information was gathered using X-Ray diffraction (XRD). The FT-IR and XRD spectra of the composite materials were dominated by peaks related to lysine, due to the nature of these samples. Inductively coupled plasma-mass spectrometry (ICP-MS) data were collected of the functionalized and nonfunctionalized samples left in solution for periods of 1 day, 5 days and 7 days. This provided evidence of improved aqueous stability of the AlOOH-lysine composite with no effect seen in the GaOOH-lysine composite. The findings of this study will be used in determining the importance of lysine functionalization for future biomolecule-nanomaterial composites.

show abstract

In situ functionalization of gallium nitride powder with a porphyrin dye

Cited by 4 publications

References 45 publications

In situ and ex situ functionalization of nanostructured gallium oxy‐hydroxide with a porphyrin dye

In situ and ex situ functionalization of nanostructured gallium oxy‐hydroxide with a porphyrin dye

GaN meets organic: technologies and devices based on gallium-nitride/organic hybrid structures

Aqueous stability of nanostructured aluminum and gallium oxyhydroxide before and after functionalization with lysine

Contact Info

Product

Resources

About