DataVXACS Applied Materials & InterfacesPaper
journal article·2021-11-03Open access

Non-Covalent Coatings on Carbon Nanotubes Mediate Photosensitizer Interactions

Christopher P. Horoszko, Peter J. Schnatz, Januka Budhathoki-Uprety, Rahul V. Rao-Pothuraju, Ronald L. Koder, Daniel A. Heller

ACS Applied Materials & Interfaces· Volume 13· Issue 43
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Source abstract

Abstract

Carbon nanotube-based donor-acceptor devices are used in applications ranging from photovoltaics and sensors to environmental remediation. Non-covalent contacts between donor dyes and nanotubes are often used to optimize sensitization and scalability. However, inconsistency is often observed despite donor dye studies reporting strong donor-acceptor interactions. Here, we demonstrate that the dye binding location is an important factor in this process: we used coated-acceptor chromatic responses and find that dye binding is affected by the coating layer. The emission response to free- and protein-sequestered porphyrin was tested to compare direct and indirect dye contact. An acceptor complex that preferentially red-shifts in response to sequestered porphyrin was identified. We observe inconsistent optical signals that suggest porphyrin-dye interactions are best described as coating-centric; therefore, the coating interface must be considered in application and assay design.
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Research context

NanomaterialsElectronic materials

OpenAlex topics: Carbon Nanotubes in Composites · bioluminescence and chemiluminescence research · Photoreceptor and optogenetics research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Weill Cornell Medicine, Cornell University, New York, New York 10065, United States

Memorial Sloan Kettering Cancer Center, New York, New York 10065, United States

Department of Physics, City College of New York, New York, New York 10031, United States

Department of Textile Engineering, Chemistry and Science, North Carolina State University, Raleigh, North Carolina 27606, United States

College of Arts and Sciences, New York University, New York, New York 10003, United States

Graduate Programs of Physics, Chemistry, Biochemistry and Biology, The Graduate Center of CUNY, New York, New York 10016, United States

Funding

National Cancer Institute · Pershing Square Sohn Cancer Research Alliance · Honorable Tina Brozman Foundation · Tow Foundation · Memorial Sloan-Kettering Cancer Center · Division of Chemical, Bioengineering, Environmental, and Transport Systems · New York University · National Institute of General Medical Sciences · Commonwealth Foundation for Cancer Research Foundation · National Science Foundation · Anna Fuller Cancer Fund · Center for Molecular Imaging and Nanotechnology, Memorial Sloan Kettering Cancer Center · APS Foundation · Experimental Therapeutics Center, Memorial Sloan Kettering Cancer Center · Expect Miracles Foundation - Financial Services Against Cancer

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