@misc{bocian_kuhr_lindsey_clausen_gryko_2009, title={High density memory device}, volume={7,518,905}, number={2009 Apr. 14}, author={Bocian, D. F. and Kuhr, W. G. and Lindsey, J. and Clausen, P. C. and Gryko, D. T.}, year={2009} }
 @inbook{roth_liu_gryko_clausen_lindsey_bocian_kuhr_2003, title={Charge-retention characteristics of self-assembled monolayers of molecular-wire-linked porphyrins on gold}, volume={844}, ISBN={0841237824}, booktitle={Molecules as components of electronic devises}, publisher={Washington, D.C.: American Chemical Society}, author={Roth, K. M. and Liu, Z. M. and Gryko, D. T. and Clausen, C. and Lindsey, J. S. and Bocian, D. F. and Kuhr, W. G.}, year={2003}, pages={51–61} }
 @article{roth_gryko_clausen_li_lindsey_kuhr_bocian_2002, title={Comparison of electron-transfer and charge-retention characteristics of porphyrin-containing self-assembled monolayers designed for molecular information storage}, volume={106}, ISSN={["1520-6106"]}, DOI={10.1021/jp025850a}, abstractNote={The redox kinetics for a variety of porphyrin-containing self-assembled monolayers (SAMs) on Au are reported. The measurements probe both the rate of electron-transfer (k0) for oxidation (in the presence of applied potential) and the rate of charge dissipation after the applied potential is disconnected (characterized by a charge-retention half-life (t1/2)). The porphyrins include (1) monomeric Zn complexes that contain phenylmethylene linkers wherein the number of methylene spacers varies from 0 to 3, (2) monomeric Zn complexes that contain different ethynylphenyl-derived linkers, and (3) a triple-decker lanthanide sandwich complex with a phenylethynylphenyl linker. The k0 values for all the porphyrin SAMs are in the range of 104−105 s-1. The k0 values for the monomeric ethynylphenyl-linked porphyrin SAMs are generally faster than those for the monomeric phenylmethylene-linked SAMs. The rates for the latter SAMs decrease as the number of methylene spacers increases. The rates for the triple-decker SAM ar...}, number={34}, journal={JOURNAL OF PHYSICAL CHEMISTRY B}, author={Roth, KM and Gryko, DT and Clausen, C and Li, JZ and Lindsey, JS and Kuhr, WG and Bocian, DF}, year={2002}, month={Aug}, pages={8639–8648} }
 @article{kodis_liddell_garza_clausen_lindsey_moore_moore_gust_2002, title={Efficient energy transfer and electron transfer in an artificial photosynthetic antenna-reaction center complex}, volume={106}, ISSN={["1520-5215"]}, DOI={10.1021/jp012133s}, abstractNote={A highly efficient functional mimic of a photosynthetic antenna−reaction center complex has been designed, synthesized, and studied spectroscopically. The antenna, consisting of four covalently linked zinc tetraarylporphyrins, (PZP)3−PZC, has been coupled to a free-base porphyrin−fullerene artificial photosynthetic reaction center, P−C60, to form a (PZP)3−PZC−P−C60 hexad. As revealed by time-resolved absorption and emission studies in 2-methyltetrahydrofuran solution at ambient temperature, excitation of a peripheral zinc porphyrin moiety is followed by singlet−singlet energy transfer to the central zinc porphyrin to give (PZP)3−1PZC−P−C60 with a time constant of 50 ps. The excitation is passed on to the free-base porphyrin in 32 ps to produce (PZP)3−PZC−1P−C60, which decays by electron transfer to the fullerene with a time constant of 25 ps. The resulting (PZP)3−PZC−P•+−C60•- charge-separated state is generated with a quantum yield of 0.98 based on light absorbed by the porphyrin antenna. Direct excitati...}, number={10}, journal={JOURNAL OF PHYSICAL CHEMISTRY A}, author={Kodis, G and Liddell, PA and Garza, L and Clausen, PC and Lindsey, JS and Moore, AL and Moore, TA and Gust, D}, year={2002}, month={Mar}, pages={2036–2048} }
 @article{gryko_clausen_roth_dontha_bocian_kuhr_lindsey_2000, title={Synthesis of "porphyrin-linker-thiol" molecules with diverse linkers for studies of molecular-based information storage}, volume={65}, ISSN={["0022-3263"]}, DOI={10.1021/jo000487u}, abstractNote={The attachment of redox-active molecules such as porphyrins to an electroactive surface provides an attractive approach for electrically addressable molecular-based information storage. Porphyrins are readily attached to a gold surface via thiol linkers. The rate of electron transfer between the electroactive surface and the porphyrin is one of the key factors that dictates suitability for molecular-based memory storage. This rate depends on the type and length of the linker connecting the thiol unit to the porphyrin. We have developed different routes for the preparation of thiol-derivatized porphyrins with eight different linkers. Two sets of linkers explore the effects of linker length and conjugation, with one set comprising phenylethyne units and one set comprising alkyl units. One electron-deficient linker has four fluorine atoms attached directly to a thiophenyl unit. To facilitate the synthesis of the porphyrins, convenient routes have been developed to a wide range of aldehydes possessing a protected S-acetylthio group. An efficient synthesis of 1-(S-acetylthio)-4-iodobenzene also has been developed. A set of porphyrins, each bearing one S-acetyl-derivatized linker at one meso position and mesityl moieties at the three remaining meso positions, has been synthesized. Altogether seven new aldehydes, eight free base porphyrins and eight zinc porphyrins have been prepared. The zinc porphyrins bearing the different linkers all form self-assembled monolayers (SAMs) on gold via in situ cleavage of the S-acetyl protecting group. The SAM of each porphyrin is electrochemically robust and exhibits two reversible oxidation waves.}, number={22}, journal={JOURNAL OF ORGANIC CHEMISTRY}, author={Gryko, DT and Clausen, C and Roth, KM and Dontha, N and Bocian, DF and Kuhr, WG and Lindsey, JS}, year={2000}, month={Nov}, pages={7345–7355} }
 @article{gryko_clausen_lindsey_1999, title={Thiol-derivatized porphyrins for attachment to electroactive surfaces}, volume={64}, ISSN={["1520-6904"]}, DOI={10.1021/jo9911084}, abstractNote={The attachment of porphyrin monomers and multiporphyrin arrays in controlled architectures on electroactive surfaces opens many opportunities for electrochemical studies. Toward this goal, we have developed routes for the preparation of thiol-derivatized porphyrin monomers and porphyrin building blocks that require minimal or no handling of free thiols. Routes to S-protected p-thiobenzaldehydes and m-(thiomethyl)benzaldehydes have been developed. Two sets of meso-substituted porphyrins with variation in electrochemical potentials have been prepared for vertical or horizontal orientation with respect to the electroactive surface. In one set, each porphyrin bears one S-protected p-thiophenyl unit and substituents at the three remaining meso-positions. In the other set each porphyrin possesses four S-protected m-(thiomethyl)phenyl units. Tuning the electrochemical potential in the former set has been achieved by variation of the meso substituents (mesityl, 2,4,6-trimethoxyphenyl, n-pentyl, pentafluorophenyl)...}, number={23}, journal={JOURNAL OF ORGANIC CHEMISTRY}, author={Gryko, DT and Clausen, C and Lindsey, JS}, year={1999}, month={Nov}, pages={8635–8647} }