A5088212695- Conducting polymers and applications
- Luminescence and Fluorescent Materials
- Supramolecular Self-Assembly in Materials
- Molecular Junctions and Nanostructures
- Semiconductor materials and interfaces
- Nanowire Synthesis and Applications
- Nanocluster Synthesis and Applications
- Polydiacetylene-based materials and applications
- Carbon and Quantum Dots Applications
- Semiconductor materials and devices
- Advanced biosensing and bioanalysis techniques
- Synthesis and Properties of Aromatic Compounds
- Genetically Modified Organisms Research
- Porphyrin and Phthalocyanine Chemistry
- Global trade, sustainability, and social impact
- Molecular Sensors and Ion Detection
- Silicon Nanostructures and Photoluminescence
- Organic Electronics and Photovoltaics
- Covalent Organic Framework Applications
- Electrochemical Analysis and Applications
- Intellectual Property and Patents
- Quantum Dots Synthesis And Properties
- Supramolecular Chemistry and Complexes
University of Miami
2019-2024
American Orchid Society
2020
Locking-in the conformation of supramolecular assemblies provides a new avenue to regulate (opto)electronic properties robust nanoscale objects. In present contribution, we show that covalent tethering perylene bisimide (PBI)-derived polymer with molecular locker enables formation locked superstructure equipped emergent structure-function relationships. Experiments exploit variable-temperature ground-state electronic absorption spectroscopy unambiguously demonstrate excitonic coupling...
In this work, a NIR emitting dye, p-toluenesulfonate (IR-813) was explored as model precursor to develop red emissive carbon dots (813-CD) with solvatochromic behavior red-shift observed increasing solvent polarity. The 813-CDs produced had emission peaks at 610 and 698 nm, respectively, in water blue shifts of polarity decreased. Subsequently, 813-CD synthesized nitrogen content polyethyleneimine (PEI) elucidate the change band gap energy. With increased content, CDs emissions far 776 nm....
Structural and functional heterogeneity is a consequence of the weak noncovalent interactions that direct formation organic materials from solution precursors. While covalent tethering solution-phase assemblies provides compelling strategy to enhance intermolecular order, effects this on formed solid-state remain unestablished. This work uses pump–probe microscopy compare excited-state dynamics in thin films fabricated tethered perylene bisimide those assemblies. On average, exhibit faster...
The surface coverage and molecular composition of redox-active molecules anchored on conductive surfaces regulate the kinetic thermodynamic parameters charge transfer reactions, providing a means to tune electrochemical properties hybrid materials. Herein, anchoring strategies structural probes, derived from ferrocene (Fc) naphthalene diimide (NDI), are shown functionalized p-doped Si(111) surfaces. Covalent functionalization hydrogen-terminated with Fc NDI affords interfaces characterized...
Redox-assisted assembly offers new avenues to optimize the excitonic properties and solid-state morphologies of water-soluble perylene bisimide supramolecular polymers.
Modulating, by design, the electronic properties of nanoscale objects that are water-compatible is at forefront to develop redox-responsive materials capable interfacing and probing living organisms. In present work, we report synthesis structural characterizations two novel water-soluble naphthalene diimide (NDI) oligomers differ in nature flexible chemical linkages tethering π-conjugated cores. Ground-state absorption spectroscopy experiments, performed as a function oligomer concentration...
A two-component stapling strategy is used to covalently tether a new class of water-soluble supramolecular polymers built from bay-functionalized perylene bisimide (PBI) units.
The functionalization of silicon electrodes with π-conjugated chromophores opens new avenues to engineer hybrid semiconducting interfaces relevant information storage and processing. Notably, molecularly dissolved units, such as ferrocene derivatives, are traditionally exploited building blocks construct well-defined that establish electrochemically addressable platforms which investigate electron transfer properties charge capabilities. In contrast, planar naphthalene diimide (NDI) cores...
Formed through equilibrium-driven processes, π-conjugated supramolecular polymers (π-SPs) are equipped with electronic structures that primarily governed by van der Waals interactions between repeating units. Consequently, the structure–function relationships of these materials extremely sensitive to changes in temperature, solvent composition, and building block concentration. These experimental constraints not only render processing π-SPs challenging but also restrain molecular toolkit...
Abstract Locking‐in the conformation of supramolecular assemblies provides a new avenue to regulate (opto)electronic properties robust nanoscale objects. In present contribution, we show that covalent tethering perylene bisimide (PBI)‐derived polymer with molecular locker enables formation locked superstructure equipped emergent structure–function relationships. Experiments exploit variable‐temperature ground‐state electronic absorption spectroscopy unambiguously demonstrate excitonic...
The functionalization of conducting silicon (Si) substrates with redox-active probes delivers hybrid semiconducting interfaces whose electronic functions are parameterized by the molecular conformations monolayers. However, it remains challenging to build electronically homogeneous using flat, π-conjugated derivatives that prone aggregation, as structural heterogeneity in solid state unequivocally engenders ill-defined domains. This limitation has notoriously hampered development n-type Si...
The molecular engineering of chromophores that enables the controlled and reliable formation hierarchical solid-state architectures is at forefront developing hybrid semiconducting materials. While rules principles to assemble monomeric porphyrin-derived building blocks are well established, aggregation larger π-conjugated cores feature electronically coupled porphyrin arrays has been vastly underexplored. In present contribution, we report synthesis, spectroscopy, assembly, properties a...
While the functionalization of silicon electrode surfaces with molecularly dissolved chromophores paves way to create diverse redox-responsive interfaces, leveraging nanoscale objects derived from π-conjugated organic building blocks modulate electronic structures Si hybrids remains vastly elusive. This study uncovers a redox-controlled stabilization effect exclusive electrodes functionalized monolayers that are perylene bisimide (PBI) nanoaggregates. For this class n-type hybrid...
The confinement of π-conjugated chromophores on silicon (Si) electrode surfaces is a powerful approach to engineer electroresponsive monolayers relevant microelectronics, electrocatalysis, and information storage processing. While common strategies functionalize Si interfaces exploit molecularly dissolved building blocks, only handful number studies have leveraged the structure-function relationships π-aggregates tune electronic structures hybrid at interfaces. Herein, we show that...