Skip To Main Content
Guocan Li on Muck Rack

Guocan Li

Is this you? As a journalist, you can create a free Muck Rack account to customize your profile, list your contact preferences, and upload a portfolio of your best work. Claim your profile
Back to Guocan Li’s profile

Articles by Guocan Li

Flipping Molecules over on TiO2 Surfaces with Light and Electric Fields

|
By Guocan Li, Gerald J. Meyer
| American Chemical Society
Light excitation of the sensitizer [Ru(NH3)5(eina)](PF6)2, where eina is ethyl isonicotinate, anchored to anatase TiO2 nanocrystallites interconnected in a mesoporous thin film and immersed in CH3CN resulted in spectroscopic changes consistent with both excited-state injection and sensitizer reorientation, termed flipping. When the light irradiation was removed, the sensitizers flipped back over.
Open in Who Shared Issue with article?
|
By Guocan Li, Matthew Brady, Gerald J. Meyer
| American Chemical Society
Open in Who Shared Issue with article?

Rhodamine-Platinum Diimine Dithiolate Complex Dyads as Efficient and Robust Photosensitizers for Light-Driven Aqueous Proton Reduction to Hydrogen

|
By Guocan Li, Michael Mark, Hongjin Lv, David W. McCamant
| American Chemical Society
Three new dyads consisting of a rhodamine (RDM) dye linked covalently to a Pt diimine dithiolate (PtN S ) charge transfer complex were synthesized and used as photosensitizers for the generation of H from aqueous protons. The three dyads differ only in the substituents on the rhodamine amino groups, and are denoted as Pt-RDM1, Pt-RDM2, and Pt-RDM3.
Open in Who Shared Issue with article?

Bromide Photo-oxidation Sensitized to Visible Light in Consecutive Ion Pairs

|
By Guocan Li, Wesley B. Swords, Gerald J. Meyer
| American Chemical Society
The titration of bromide into a [Ru(deeb)(bpz) ]2+ (Ru2+, deeb = 4,4?-diethylester-2,2?-bipyridine; bpz = 2,2?-bipyrazine) dichloromethane solution led to the formation of two consecutive ion-paired species, [Ru2+, Br–]+ and [Ru2+, 2Br–], each with distinct photophysical and electron-transfer properties. Formation of the first ion pair was stoichiometric, K > 106 M–1, and the second ion-pair equilibrium was estimated to be K = (2.4 ± 0.4) × 105 M–1.
Open in Who Shared Issue with article?

Chloride Oxidation by Ruthenium Excited-States in Solution

|
By Ludovic Troian-Gautier, Gerald J. Meyer, Guocan Li
| American Chemical Society
Photodriven HCl splitting to produce solar fuels is an important goal that requires strong photo-oxidants capable of chloride oxidation. In a molecular approach toward this goal, three ruthenium compounds with 2,2?-bipyrazine backbones were found to oxidize chloride ions in acetone solution. Nanosecond transient absorption measurements provide compelling evidence for excited-state electron transfer from chloride to the Ru metal center with rate constants in excess of 1010 M–1 s–1.
Open in Who Shared Issue with article?
Show More