Works Published in 2016
Displaying works 21 - 40 of 254 in total
Sorted by most recent date added to the index first, which may not be the same as publication date order.
2016 journal article
Optical modulation of nano-gap tunnelling junctions comprising self-assembled monolayers of hemicyanine dyes.
Nature Communications, 7, 11749.
Contributors: P. Pourhossein*, R. Vijayaraghavan *, S. Meskers* & R. Chiechi*
www.nature.com (publisher PDF)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: January 25, 2022
2016 journal article
Bisecting Microfluidic Channels with Metallic Nanowires Fabricated by Nanoskiving.
ACS Nano, 2(2), 2852–2859.
Contributors: G. Kalkman *, Y. Zhang *, E. Monachino *, K. Mathwig *, M. Kamminga *, P. Pourhossein*, P. Oomen *, S. Stratmann*
author keywords: nanoskiving 3D nanofabrication; nanowires; microfluidics; single-molecule fluorescence imaging
TL;DR:
Active functionality and passive functionality are demonstrated by visualizing individual, fluorescently labeled DNA molecules attached to the wires and it is shown that, compared to surface-bound DNA strands, elongation saturates at lower rates of flow and background fluorescence from nonspecific binding is reduced.
(via Semantic Scholar)
Source: ORCID
Added: January 25, 2022
2016 journal article
Pronounced Environmental Effects on Injection Currents in EGaIn Tunneling Junctions Comprising Self-Assembled Monolayers
The Journal of Physical Chemistry C, 120(36), 20437–20445.
Contributors: M. Carlotti *, M. Degen*, Y. Zhang * & R. Chiechi*
TL;DR:
It is shown that self-assembled monolayers of wire-like oligophenyleneethynylenes (OPEs), which are fully conjugated, only exhibit length-dependent tunneling behavior in a low-O2 environment, and suggests that adhesive forces play a significant role in tunneling charge-transport in large-area molecular junctions.
(via Semantic Scholar)
Source: ORCID
Added: January 25, 2022
2016 journal article
Mixed Monolayers of Spiropyrans Maximize Tunneling Conductance Switching by Photoisomerization at the Molecule–Electrode Interface in EGaIn Junctions
Journal of the American Chemical Society, 138(38), 12519–12526.
Contributors: S. Kumar *, J. Van Herpt*, R. Gengler*, B. Feringa *, P. Rudolf * & R. Chiechi*
TL;DR:
This paper describes the photoinduced switching of conductance in tunneling junctions comprising self-assembled monolayers of a spiropyran moiety using eutectic Ga–In top contacts and observes an increase in the current density J when the closed form is irradiated with UV light to induce the ring-opening reaction.
(via Semantic Scholar)
Source: ORCID
Added: January 25, 2022
2016 journal article
Dipole-induced asymmetric conduction in tunneling junctions comprising self-assembled monolayers
Rsc Advances, 6(73), 69479–69483.
Contributors: A. Kovalchuk *, D. Egger *, T. Abu-Husein*, E. Zojer *, A. Terfort * & R. Chiechi*
Source: ORCID
Added: January 25, 2022
2016 journal article
Conformation-driven quantum interference effects mediated by through-space conjugation in self-assembled monolayers.
Nature Communications, 7, 13904.
Contributors: M. Carlotti *, A. Kovalchuk *, T. Wächter*, X. Qiu *, M. Zharnikov * & R. Chiechi*
TL;DR:
Experimental evidence of conformation-driven interference effects is shown by examining through-space conjugation in which π-conjugated fragments are arranged face-on or edge-on in sufficiently close proximity to interact through space, establishing through- Space Conjugation as both of fundamental interest and as a potential tool for tuning tunnelling charge-transport in large-area, solid-state molecular-electronic devices.
(via Semantic Scholar)
Source: ORCID
Added: January 25, 2022
2016 journal article
What Makes Oxidized N-Acylanthranilamides Stable?
The Journal of Physical Chemistry Letters, 7(5), 758–764.
MeSH headings : Electrochemical Techniques; Magnetic Resonance Spectroscopy; Mass Spectrometry; Models, Molecular; Oxidation-Reduction; ortho-Aminobenzoates / chemistry
TL;DR:
Two requirements for attaining long-lived radical cations of N-acylated Aa derivatives are revealed: keeping the reduction potentials for oxidizing the Aa residues under about 1.4 V vs SCE and adding an electron-donating group para to the N-terminal amide of the aromatic ring, which prevents the electron spin density of the radical cation from extending over the C- terminal amide.
(via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: January 18, 2022
2016 journal article
How To Reach Intense Luminescence for Compounds Capable of Excited‐State Intramolecular Proton Transfer?
Chemistry – A European Journal, 22(22), 7485–7496.
author keywords: dyes/pigments; fluorescence; fused-ring systems; heterocycles; photochemistry
TL;DR:
Steady-state and time-resolved UV/Vis spectroscopy reveals that, upon photoexcitation, the prepared protic heteroaromatics undergo ESIPT, converting them efficiently into their excited-state keto tautomers, which have lifetimes ranging from about 5 to 10 ns.
(via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: January 18, 2022
2016 journal article
Nitropyrene Photoprobes: Making Them, and What Are They Good for?
European Journal of Organic Chemistry, 2016(2), 343–356.
author keywords: Sensitizers; Triplet sensitizer; Fluorecent probes; Electron acceptor; Nitration; Conformational dynamics
Sources: Crossref, NC State University Libraries
Added: January 17, 2022
2016 journal article
Nonplanar Butterfly-Shaped π-Expanded Pyrrolopyrroles
Chemistry - A European Journal, 22(46), 16478–16488.
author keywords: chromophores; computer chemistry; fluorescence; fused-ring systems; solvatochromism
TL;DR:
These studies suggest that, similar to 9,9'-bianthryl, the nonpolar locally excited state shows negligible solvatochromism, whereas the charge-transfer state is sensitive to solvent polarity.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Sources: Crossref, NC State University Libraries
Added: January 17, 2022
2016 journal article
Gating That Suppresses Charge Recombination–The Role of Mono-N-Arylated Diketopyrrolopyrrole
Journal of the American Chemical Society, 138(39), 12826–12832.
TL;DR:
The role of dynamic gating for impeding CR in a molecular rotor, comprising an electron donor and acceptor directly linked via a single bond is focused on, providing a unique example of synergy between torsional and vibronic modes and their drastic effects on charge-transfer dynamics.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Sources: Crossref, NC State University Libraries
Added: January 17, 2022
2016 journal article
Photochemical CVD of Ru on functionalized self-assembled monolayers from organometallic precursors
Journal of Chemical Physics, 146, 052816.
TL;DR:
Proof-of-concept studies of photochemical CVD to metallize organic thin films provide guidelines for the rational design of new precursors specifically for selective photochemicalCVD on organic substrates and suggest that selective deposition can be achieved onorganic thin films by judicious choice of precursor and functional groups present on the substrate.
(via Semantic Scholar)
Source: ORCID
Added: January 6, 2022
2016 journal article
Cu(II)-Catalyzed Oxidative Formation of 5,5′-Bistriazoles
Journal of Organic Chemistry, 81(24), 12091–12105.
TL;DR:
Aromatic azide-derived 5,5'-bistriazoles possess rigid axially chiral structures with a broad distribution of dihedral angles, which may be explored as chiral ligands in enantioselective catalysis if decorated with proper functional groups.
(via Semantic Scholar)
Source: ORCID
Added: January 6, 2022
2016 journal article
Uncovering the Roles of Oxygen in Cr(III) Photoredox Catalysis
J. Am. Chem. Soc., 138(16), 5451–5464.
TL;DR:
The key finding is that oxygen acts as a renewable energy and electron shuttle following photoexcitation of the Cr(III) catalyst, providing insight into how oxygen can participate as a sustainable reagent in photocatalysis.
(via Semantic Scholar)
Source: ORCID
Added: January 6, 2022
2016 journal article
Highly Strained Iron(II) Polypyridines: Exploiting the Quintet Manifold To Extend the Lifetime of MLCT Excited States
J. Am. Chem. Soc., 138(9), 2949–2952.
TL;DR:
Evidence is presented that the quintet metal-to-ligand charge-transfer excited state ((5) MLCT) can be accessed via visible light absorption and that the thermalized (5,7)MLCT is long-lived at 16 ps, representing a > 100 fold increase compared to the (1,3)ML CT within species such as [Fe(bpy)3](2+).
(via Semantic Scholar)
Source: ORCID
Added: January 6, 2022
2016 journal article
High photo-currents with a zwitterionic thiocyanate-free dye in aqueous-based dye sensitized solar cells
Dalton Transactions, 45(13), 5622–5628.
Contributors: R. Fayad* , T. Shoker* & T. Ghaddar *
TL;DR:
A new water soluble and stable thiolate/disulfide redox couple (T(-)/DS) is reported and its use with a new zwitterionic and thiocyanate-free dye (T169) in a 100% aqueous electrolyte system is reported.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation
(OpenAlex)
Source: ORCID
Added: January 6, 2022
2016 journal article
The Role of Order in the Amplification of Light-Energy Conversion in a Dye-Sensitized Solar Cell Coupled to a Photonic Crystal
ChemPhysChem, 17(2), 260–269.
Contributors: R. Fayad* & L. Halaoui *
author keywords: dye-sensitized solar cells; energy conversion; light trapping; photonic crystals; photonic glass
TL;DR:
The light-trapping effect is found to be dependent on structural order, as a highly disordered inverse glass film with the same air-hole size and thickness does not yield the same gain.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: January 6, 2022
2016 journal article
The Porphobilinogen Conundrum in Prebiotic Routes to Tetrapyrrole Macrocycles
Origins of Life and Evolution of Biospheres, 47(1), 93–119.
author keywords: delta-aminolevulinic acid; Porphyrinogen; Porphyrin; DFT; Biosynthesis; Biomimetic
MeSH headings : Aminolevulinic Acid / analogs & derivatives; Aminolevulinic Acid / chemistry; Evolution, Chemical; Kinetics; Origin of Life; Porphobilinogen / chemistry; Tetrapyrroles / chemistry
TL;DR:
The results suggest efforts toward a biomimetic, enzyme-free route to tetrapyrroles from ALA should turn away from structure-directed reactions and focus on catalysts that orient the two aminoketones to form PBG in a kinetically controlled process, thereby avoiding formation of pseudo-PBG.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
6. Clean Water and Sanitation
(OpenAlex)
Sources: ORCID, NC State University Libraries
Added: October 17, 2021
2016 journal article
Synthetic Chlorins, Possible Surrogates for Chlorophylls, Prepared by Derivatization of Porphyrins
Chemical Reviews, 117(2), 344–535.
MeSH headings : Chlorophyll / chemistry; Porphyrins / chemistry; Stereoisomerism
TL;DR:
The synthesis and spectral properties of the vast collection of compounds described herein are expected to illuminate the scope to which synthetic chlorins can serve as surrogates for chlorophylls and be exploited in diverse ways.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
15. Life on Land
(OpenAlex)
Sources: ORCID, NC State University Libraries
Added: October 17, 2021
2016 conference paper
Characterization of Self-Assembled Monolayers on Gold Films
Glover, T. A., & Martin, M. R. (2016, November). Presented at the 43rd Annual Meeting of the NOBCChE, Raleigh Convention Center, Raleigh, NC.
Event: 43rd Annual Meeting of the NOBCChE at Raleigh Convention Center, Raleigh, NC on November 8-11, 2016
Source: NC State University Libraries
Added: September 18, 2021
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