ArticleThe journal of physical chemistry. A2013
Temperature-dependent conformations of a membrane supported zinc porphyrin tweezer by 2D fluorescence spectroscopy.
Article in The journal of physical chemistry. A, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 31 citations in OpenAlex.
- Article
- Temperature-dependent local conformations and conformational distributions of cyanine dimer labeled single-stranded-double-stranded DNA junctions by 2D fluorescence spectroscopy.The Journal of chemical physics · 2022Article
- Simulating Fluorescence-Detected Two-Dimensional Electronic Spectroscopy of Multichromophoric Systems.The journal of physical chemistry. B · 2019Article
- Temperature-dependent conformations of exciton-coupled Cy3 dimers in double-stranded DNA.The Journal of chemical physics · 2018Article
- Simple Quantum Dynamics with Thermalization.The journal of physical chemistry. A · 2018Article
- Time resolved structural dynamics of butadiyne-linked porphyrin dimers.Structural dynamics (Melville, N.Y.) · 2016Article
- Fifty years of DNA "breathing": Reflections on old and new approaches.Biopolymers · 2013Review
Corrections and comments
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Authors and funding
7 authors at 3 institutions in 1 country.
Funding
Abstract
We studied the equilibrium conformations of a zinc porphyrin tweezer composed of two carboxylphenyl-functionalized zinc tetraphenyl porphyrin subunits connected by a 1,4-butyndiol spacer, which was suspended inside the amphiphilic regions of 1,2-distearoyl-sn-glycero-3-phosphocholine (DSPC) liposomes. By combining phase-modulation two-dimensional fluorescence spectroscopy (2D FS) with linear absorbance and fluorimetry, we determined that the zinc porphyrin tweezer adopts a mixture of folded and extended conformations in the membrane. By fitting an exciton-coupling model to a series of data sets recorded over a range of temperatures (17-85 °C) and at different laser center wavelengths, we determined that the folded form of the tweezer is stabilized by a favorable change in the entropy of the local membrane environment. Our results provide insights toward understanding the balance of thermodynamic factors that govern molecular assembly in membranes.
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Registered trials
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