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Malik L Williams

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Recent Articles
1.
Williams M, Palmer J, Tyndall S, Chen Y, Young R, Garzon-Ramirez A, et al.
J Chem Phys . 2025 Jan; 162(2. PMID: 39783977
Organic donor-acceptor (D-A) cocrystals are gaining attention for their potential applications in optoelectronic devices. This study explores the dynamics of charge transfer (CT) and triplet exciton formation in various D-A...
2.
Peinkofer K, Williams M, Mantel G, Phelan B, Young R, Wasielewski M
J Am Chem Soc . 2024 Dec; 146(50):34934-34942. PMID: 39655818
Singlet exciton fission (SF) and symmetry-breaking charge separation (SB-CS) are both photophysical processes that can occur between two organic chromophores and are both of interest to improve solar energy conversion....
3.
Williams M, Palmer J, Young R, Wasielewski M
J Am Chem Soc . 2024 Nov; 146(49):34130-34140. PMID: 39577008
Understanding charge transfer (CT) dynamics in donor-acceptor (D-A) cocrystals is important for the development of efficient organic photovoltaic and electronic materials. This study explores the photogenerated CT states of supramolecular...
4.
Williams M, Coleman A, Peinkofer K, Young R, Wasielewski M
Chem Sci . 2024 Jul; 15(29):11472-11479. PMID: 39055038
We report the synthesis and characterization of a covalently linked asymmetric cyclophane comprising a 1,7-di(pyrrolidin-1'-yl)perylene-3,4,9,10-bis(dicarboximide) (pyrPDI) and 1,6,7,12-tetra(4'--butylphenoxy)perylene-3,4,9,10-bis(dicarboximide) (tpPDI), which absorbs light from 400-750 nm. Single crystals of pyrPDI-tpPDI were...
5.
Fisher J, Williams M, Palmer J, Powers-Riggs N, Young R, Wasielewski M
J Am Chem Soc . 2024 Mar; 146(14):9911-9919. PMID: 38530990
Crystalline donor-acceptor (D-A) systems serve as an excellent platform for studying CT exciton creation, migration, and dissociation into free charge carriers for solar energy conversion. Donor-acceptor cocrystals have been utilized...
6.
Palmer J, Williams M, Young R, Peinkofer K, Phelan B, Krzyaniak M, et al.
J Am Chem Soc . 2023 Dec; 146(1):1089-1099. PMID: 38156609
The photogeneration of multiple unpaired electron spins within molecules is a promising route to applications in quantum information science because they can be initialized into well-defined, multilevel quantum states (...
7.
Lin C, Qi Y, Brown P, Williams M, Palmer J, Myong M, et al.
J Phys Chem Lett . 2023 Mar; 14(10):2573-2579. PMID: 36880847
Singlet fission (SF) is a spin-allowed process in which a photogenerated singlet exciton down-converts into two triplet excitons. Perylene-3,4-dicarboximide (PMI) has singlet and triplet state energies of 2.4 and 1.1...
8.
Williams M, Schlesinger I, Jacobberger R, Wasielewski M
J Am Chem Soc . 2022 Sep; 144(40):18607-18618. PMID: 36178390
Ultrafast triplet formation in donor-acceptor (D-A) systems typically occurs by spin-orbit charge-transfer intersystem crossing (SOCT-ISC), which requires a significant orbital angular momentum change and is thus usually observed when the...
9.
Jacobberger R, Qiu Y, Williams M, Krzyaniak M, Wasielewski M
J Am Chem Soc . 2022 Jan; 144(5):2276-2283. PMID: 35099963
Multiexciton quintet states, (TT), photogenerated in organic semiconductors using singlet fission (SF), consist of four quantum entangled spins, promising to enable new applications in quantum information science. However, the factors...