{"id":"8ae1ac4c-fb4c-4c7d-aa1a-97e3406f9520","arxiv_id":"2507.11007","paper_version":1,"verdict":"CONDITIONAL","confidence":"MODERATE","novelty_score":6.0,"correctness_risk":"medium","formal_verification":"none","parameter_count":4,"one_line_summary":"Porphyrin nanotubes show room-temperature Qx-Qy vibronic coupling in polarization-selected 2D spectra, with modeling indicating energetic disorder enhances the mixing across the Q band.","lead":"This paper uses polarization-controlled two-dimensional spectroscopy to show that room-temperature porphyrin nanotubes, a stand-in for photosynthetic aggregates, host mixed Qx-Qy vibronic states that appear to drive fast internal conversion. The authors argue that energetic disorder, not order, is what enables these couplings, offering a design principle for artificial light harvesting.","discovery_kind":"new_application","skeptic_critique":{"model":"deepseek-v4-flash","headline":"The disorder mechanism is inferred from linear absorption alone; the model is never tested against the P-2D cross-peaks or anisotropic beats that constitute the central experimental evidence.","rationale":"The reader's weakest_assumption is the unmeasured disorder sigma=200 cm^-1 taken from chlorosome studies. That is a legitimate concern about the parameter input. However, the most load-bearing issue is more structural: the theoretical mechanism is never confronted with the actual 2D and beat observables that the paper uses as evidence. Even if sigma were measured to be exactly 200 cm^-1, the model's central prediction for the nonlinear signals has not been computed. The paper validates the model only against the linear absorption spectrum, while the conclusions depend on matching the P-2D cross-peak pattern, the 238 fs dispersive DAS, and the suppression/survival pattern of specific vibrational beats. Without a direct simulation of these observables, the interpretation of the experimental data in terms of disorder-enhanced vibronic coupling is a hypothesis, not a demonstrated result. This concern is closely related to the reader's rationale, which also notes that the model is not tested against the full 2D observables, but it goes beyond the single-parameter sigma issue. The experimental work is careful and the polarization controls are credible, so a REJECT would be too strong; the appropriate verdict remains CONDITIONAL, with the condition being a quantitative nonlinear simulation (or a softened abstract). Since the reader already arrived at CONDITIONAL, my verdict is UNCHANGED. I have set agreement_with_reader to 'partial' because I share the reader's overall conditional assessment but identify the missing nonlinear simulation, rather than sigma alone, as the primary load-bearing gap.","tokens_in":19681,"tokens_out":7705,"duration_ms":108528,"concrete_test":"Simulate the absorptive PA-2D and P-2D spectra at T=30 fs, 120 fs, and 1 ps, plus the P-SRPP quantum-beat spectrum, using the vibronic exciton Hamiltonian of Section S5 with Gaussian disorder sigma = 0, 50, 100, 200, and 300 cm^-1. Compare the computed CPL/DPL ratios and the 236/309 versus 432/880 cm^-1 beat amplitudes with Figures 3b and 6b. If the model cannot reproduce a CPL/DPL ratio of ~0.8 in P-2D and the observed beat survival pattern near sigma=200 cm^-1, then the central mechanistic claim that disorder drives functional Qx-Qy vibronic coupling is not supported by the model.","verdict_should_be":"UNCHANGED","load_bearing_attack":"The paper's central claim has two parts: an experimental observation of Qx-Qy vibronic features and a theoretical mechanism (disorder-enhanced vibronic mixing). The mechanism, however, is supported only by simulations of the linear absorption spectrum (Figure 7) and oscillator-strength-weighted electronic/vibrational characters (Eqs. S7-S8, Section S5). The authors never compute the nonlinear response—neither the PA/P-2D spectra nor the P-SRPP beat amplitudes—from the vibronic exciton Hamiltonian. As a result, the causal link between the disorder-containing model and the observed early-time cross-peaks, rapid broadening, 238 fs relaxation, and surviving 432/880 cm^-1 anisotropic beats is asserted rather than demonstrated. Figure 7c reports vibrational character and OS sticks, but does not simulate the P-sequence signal that isolates Qx-Qy paths. The imported sigma=200 cm^-1 (ref 65) is an additional unmeasured parameter, but even a correct sigma would not protect an untested model. Until the Hamiltonian in Eq. S5 reproduces the experimental 2D and beat patterns, the claim that disorder is 'the vital ingredient' remains an inference from absorption spectra only, and 'conclusively demonstrate' overstates the support.","agreement_with_reader":"partial"},"referee_report":{"model":"deepseek-v4-flash","summary":"This manuscript reports polarization-controlled two-dimensional electronic spectroscopy (P-2DES) and spectrally resolved pump-probe (P-SRPP) measurements on TPPS porphyrin nanotubes at room temperature. The authors observe early-time cross-peaks between the main Q band and its vibronic shoulders, rapid 2D peak broadening, a 238 fs intraband relaxation with a dispersive decay-associated spectrum, and Qx-Qy-specific anisotropic quantum beats at 432 and 880 cm^-1 that survive the P polarization sequence. They interpret these observations as evidence for room-temperature functional vibronic couplings in large chlorophyll-like aggregates. A vibronic exciton Hamiltonian with Gaussian energetic disorder (sigma = 200 cm^-1) is used to show that disorder can induce Qx-Qy electronic mixing and enhance 0-1 vibrational-electronic mixing, leading to the proposed design principle that energetic disorder comparable to dense low-frequency Raman vibrations enables disorder-enhanced vibronic mixing.","tokens_in":19933,"tokens_out":5742,"duration_ms":72228,"significance":"If the central mechanistic claim holds, the paper would be an important contribution: it would extend polarization-based evidence for functional vibronic couplings from cryogenic dimers to room-temperature, large, disordered photosynthetic aggregates, and it would identify energetic disorder as a potentially design-relevant ingredient rather than a purely detrimental factor. The experimental work has notable strengths: the P-sequence suppression is validated on a control molecule (H2Pc), extinction ratios are reported, the key beats are reproducible across multiple trials with error bands, and the vibronic model parameters are constrained by several independent measurements (H-dimer absorption, ring absorption, nanotube diameter from ultracentrifugation). However, the theoretical mechanism is currently supported only by simulations of the linear absorption spectrum and oscillator-strength-weighted electronic/vibrational characters; the nonlinear observables that constitute the paper's central experimental evidence are not computed from the same Hamiltonian.","major_comments":[{"comment":"The mechanistic claim that disorder is 'the vital ingredient' is supported only by simulations of the linear absorption spectrum (Fig. 7b,c; Section S5, Eqs. S7–S8). The experiments that carry the central message—early-time cross-peaks, the 238 fs dispersive relaxation, and the 432/880 cm^-1 anisotropic beats—are never computed from the same vibronic exciton Hamiltonian. As a result, the causal link between the disorder-containing model and the observed P-2D cross-peak amplitudes, SRPP kinetics, or beat patterns is asserted rather than demonstrated. The paper should compute at least the relevant third-order response for the model (e.g., P-2D spectra or P-SRPP beat amplitudes), or explicitly delimit the claim to a consistency argument based on absorption alone.","section":"Disorder enhances Qx − Qy vibronic mixing / Fig. 7"},{"comment":"The enhancement depends entirely on the value sigma = 200 cm^-1, which is imported from single-chlorosome studies (ref. 65) and not measured for the TPPS nanotubes. Figure 7b shows no Qx-Qy mixing at sigma = 0 and substantial mixing at sigma = 200, so a smaller actual disorder would eliminate the proposed mechanism. A sensitivity scan (e.g., sigma = 0, 50, 100, 200 cm^-1) and, ideally, an independent estimate of energetic disorder in these nanotubes (from single-tube spectroscopy or from the 2D lineshape) are needed before 'disorder is the vital ingredient' can be regarded as established.","section":"Disorder enhances Qx − Qy vibronic mixing / Fig. 7b"},{"comment":"The P-SRPP data were globally fitted with the time constants obtained from the MA-SRPP fit rather than with freely floated parameters. Because the dispersive 238 fs P-DAS line shape is the basis for the 315 cm^-1 intraband gap and the internal-conversion assignment in Figure 5, the analysis should show that the 238 fs component and its dispersive shape are recovered when the P data are fitted independently (or by a global fit with shared rates but P-specific amplitudes); the current constraint may artificially enforce the MA-derived rates.","section":"Selection of mixed Qx − Qy states / Fig. 4c,d"},{"comment":"The nanotube simulations use the one-particle approximation (1PA), which the authors acknowledge underestimates resonant vibronic mixing effects in H-aggregates (ref. 63; Fig. S17). Since the central quantitative support for disorder-enhanced 0-1 mixing (19% and 55% values in Fig. 7c and Table S5) is obtained within 1PA, the numbers are likely lower bounds; the paper should state this limitation in the main text and, if possible, test whether the trend survives with a 3PA calculation for a smaller representative aggregate (e.g., a stack of rings) before using the percentages as evidence.","section":"Vibronic Exciton Model / Methods and Section S5"}],"minor_comments":[{"comment":"The phrases 'conclusively demonstrate' and 'vital ingredient' overstate the support provided by the current analysis; more cautious language (e.g., 'indicate' or 'suggest') would better match the fact that the nonlinear observables are not simulated from the proposed model.","section":"Abstract and Conclusions"},{"comment":"The claim that this is the first instance where Qx-Qy vibronic coupling and fast intraband relaxation in porphyrin nanotubes are revealed by polarization-controlled spectroscopy should be checked against the full literature; as written, the novelty claim is stronger than what is demonstrated.","section":"Conclusions"},{"comment":"The sentence on modes implicated in B-Q Herzberg-Teller coupling cites ref. 52 (Baltuška et al., Opt. Lett. 2002, on visible pulse compression), which appears unrelated; please verify and correct the citation.","section":"Introduction / Reference 52"},{"comment":"Given the reported instrument response function FWHM of ~37 fs, the early-time cross-peaks at T = 30 fs should be discussed in relation to pulse-overlap and coherent artifacts; please clarify how these contributions were separated.","section":"Figure 2"},{"comment":"The relation P = (PA - 3PE)/4 is stated without derivation; a brief derivation or a more explicit reference would help readers verify the orientational averages for the nanotube geometry with distributed dipole orientations.","section":"Polarization scheme / Section S1.3"},{"comment":"The data are said to be in the paper and SI but are not deposited in a repository, and the code is available only 'upon reasonable request'; archiving the analysis code and processed data would strengthen reproducibility.","section":"Data and Code Availability"}],"recommendation":"major_revision","confidential_remarks":"The experimental core of this manuscript is strong and well controlled, and the topic is well within the scope of the journal. The main risk is that the disorder-mediated vibronic mixing mechanism is supported only by linear absorption simulations, while the central experimental evidence comes from nonlinear observables that are not computed from the same model. I do not think this is grounds for rejection—the claims are plausible and the experimental findings are valuable—but a major revision is needed to close the gap between the model and the nonlinear data, or to explicitly weaken the mechanistic claims to what the linear-spectrum calculations can actually support."},"author_rebuttal":null,"desk_editor":{"model":"deepseek-v4-flash","letter":"You should know this is a strong experimental paper with a weaker theoretical capstone. The new result is the first room-temperature polarization-controlled 2DES on a large chlorosome-like aggregate, and the observation of Qx-Qy cross-peaks and anisotropic beats that survive the P sequence. The controls are careful: an H2Pc molecule validates the polarization suppression, extinction ratios are reported, and the key beats reproduce across multiple trials with error bands. That part is genuinely good and worth a serious referee.\n\nThe soft spot is the mechanism. The claim that disorder is the vital ingredient for Qx-Qy vibronic mixing is derived from simulations of the linear absorption spectrum only (Figure 7). The model is never checked against the P-2D cross-peak amplitudes, the 238 fs relaxation, or the 432/880 cm^-1 anisotropic beats that constitute the paper's central experimental evidence. So 'conclusively demonstrate' in the abstract overshoots. Also the sigma=200 cm^-1 disorder is taken from single-particle chlorosome studies, not measured on these TPPS nanotubes. If the actual disorder is much smaller, the model predicts little mixing and the proposed design principle weakens. The authors do note the limitation about all modes tuning the gap, but the sigma transfer is not discussed as a caveat.\n\nThe vibrational character analysis and the 1PA caveat are reasonable. The paper is transparent that 1PA underestimates mixing, and the constrained parameter fitting is a plus. But the absence of code/data deposit is a minor ding; 'available upon request' is not great for a flagship claim.\n\nWho benefits? People working on vibronic coherence in photosynthesis, artificial light harvesting, and 2DES methodology. It deserves a serious referee. My recommendation: send to peer review, but ask the authors to (1) soften the abstract, (2) test the Hamiltonian against at least one nonlinear observable, and (3) either measure sigma on TPPS or explicitly frame the disorder result as a demonstration-of-principle.","headline":"Careful P-2D experiments on porphyrin nanotubes give solid evidence for room-temperature Qx-Qy vibronic features, but the disorder-as-vital-ingredient mechanism rests on a sigma borrowed from chlorosomes and is never tested against the 2D observables.","tokens_in":20451,"tokens_out":1981,"would_cite":true,"duration_ms":24792,"reading_group":"maybe","serious_thinker":"yes","would_accept_peer_review":true},"rs_alignment":null,"lean_confirmation":null,"pith_extraction":{"msc":[],"pacs":[],"model":"deepseek-v4-flash","headline":"The paper reports direct evidence that large disordered photosynthetic aggregates can host functional vibronic couplings at room temperature, with energetic disorder as the enabling ingredient.","keywords":["two-dimensional electronic spectroscopy","vibronic coupling","porphyrin nanotubes","photosynthetic aggregates","energetic disorder","internal conversion","polarization-controlled spectroscopy","quantum beats"],"falsifier":"Measure the site-energy disorder of TPPS nanotubes directly, for example by single-nanotube absorption or low-temperature hole-burning spectroscopy. If the distribution is substantially narrower than $\\sigma \\approx 200$ cm$^{-1}$, the predicted $Q_x$–$Q_y$ electronic mixing of 22–49% drops toward zero, leaving the proposed disorder mechanism unable to explain the observed cross-peaks and beats. One could also fabricate a low-disorder porphyrin aggregate and check whether the $P$-selected cross-peaks and the 432 and 880 cm$^{-1}$ beats disappear.","tokens_in":19485,"feed_emoji":"☀️","tokens_out":10379,"duration_ms":100771,"temperature":0.7,"pith_summary":"The paper aims to establish that large, disordered photosynthetic aggregates can sustain functional vibronic couplings, meaning mixed vibrational-electronic states, at room temperature and not only at cryogenic temperatures. Polarization-controlled two-dimensional electronic spectroscopy and pump-probe measurements on porphyrin nanotubes reveal early cross-peaks between the $Q_x$ and $Q_y$ bands, their rapid broadening, and anisotropic quantum beats that survive only when mixed $Q_x$–$Q_y$ pathways are selected. A vibronic exciton model with Gaussian site disorder of $\\sigma = 200$ cm$^{-1}$ shows that disorder breaks the electronic symmetry and enables $Q_x$–$Q_y$ vibronic mixing across the entire $Q$ band. If correct, this identifies a parameter regime, where energetic disorder is comparable to dense low-frequency Raman-active vibrations with weak reorganization energies, as a design principle for artificial light-harvesting systems made of chlorophyll-like chromophores.","feed_headline":"Room-temperature vibronic couplings found in porphyrin nanotubes","feed_subtitle":"Polarization-selected 2D spectra reveal mixed-band pathways; a model says energetic disorder is the key ingredient.","key_machinery":"The load-bearing experimental object is the polarization sequence $P = (0^\\circ, 0^\\circ, +60^\\circ, -60^\\circ)$, equivalent to $(PA - 3PE)/4$, which cancels isotropic transition-dipole pathways such as $\\langle xxxx \\rangle$ and leaves only mixed $Q_x$–$Q_y$ pathways such as $\\langle xyxy \\rangle$ and $\\langle xxyy \\rangle$. In the 2D and pump-probe experiments, this sequence isolates the signal that reports $Q_x$–$Q_y$ vibronic mixing; the surviving anisotropic beats at 432 and 880 cm$^{-1}$, assigned to out-of-plane pyrrole deformations of the protonated porphyrin ring, are the direct readout. On the theory side, the mechanism is a vibronic exciton Hamiltonian with one explicit quantum vibration, treated without the Born–Oppenheimer approximation, with energetic disorder added directly to the site energies. The argument runs: disorder creates $Q_x$–$Q_y$ electronic mixing, and electronic mixing is the necessary prerequisite for near-resonant vibrations to mediate vibronic coupling and internal conversion.","core_discovery":"The central claim is that the overlapping vibrational-electronic bands of porphyrin nanotubes, which are chlorophyll-like photosynthetic aggregates, host functional vibronic couplings at room temperature. The evidence is threefold: cross-peaks appear by $T = 30$ fs, they broaden within roughly 150–250 fs indicating rapid exciton delocalization, and anisotropic vibrational quantum beats at 432 and 880 cm$^{-1}$ survive the polarization sequence that selects only mixed $Q_x$–$Q_y$ states, while the 236 and 309 cm$^{-1}$ spectator beats are suppressed. The paper further argues that the mechanism is disorder: with Gaussian energetic disorder of $\\sigma = 200$ cm$^{-1}$ per site, the $Q_x$ and $Q_y$ bands acquire 22–49% mixed electronic character across the $Q$ band, and 0–1 vibrational mixing rises from 5% to 19% for the 880 cm$^{-1}$ mode and from 20% to 55% for the 440 cm$^{-1}$ mode. This is presented as the first demonstration that fast internal conversion within the $Q$ band of a large disordered aggregate is driven by robust, resonance-insensitive vibronic couplings at physiological temperature.","pith_inferences":["Editorial inference: the model's quantitative prediction rests on an unmeasured assumption that TPPS nanotubes carry roughly 200 cm$^{-1}$ of Gaussian site disorder; measuring that disorder directly would test the proposed mechanism before it is used as a design rule.","Editorial inference: the same polarization-selection protocol could be applied to chlorosomes or other chlorophyll aggregates at room temperature, and the paper's mechanism predicts they would show the same surviving anisotropic beats.","Editorial inference: because the surviving beats are assigned to ground-state wavepackets, the $P$ sequence may serve as a general screening tool for non-adiabatic coupling activity in any multichromophoric assembly, not only nanotubes.","Editorial inference: the observed 238 fs relaxation between states separated by 315 cm$^{-1}$ within the $Q$ band suggests energetic disorder also creates low-lying dark states, so engineering the disorder distribution could tune excited-state lifetimes in artificial systems."],"forward_implications":["Room-temperature internal conversion in chlorosome-like aggregates can be driven by vibronic couplings, extending cryogenic evidence for functional vibronic states to physiological conditions.","Energetic disorder of the order of dense low-frequency Raman-active vibrations with small Huang–Rhys factors may be a usable design principle for artificial light-harvesting antennas.","Artificial templates built from chlorophyll-like chromophores should reproduce photosynthetic $Q_x$–$Q_y$ physics better than cyanine-based nanotubes.","The anisotropic quantum-beat signature gives a spectroscopic fingerprint for identifying which vibrations actually promote $Q_x$–$Q_y$ mixing, as opposed to spectator modes.","Disorder plays a dual role: it enables electronic mixing and widens the resonance range over which vibrations couple, going beyond models that treat disorder only as line broadening."],"supporting_citations":[{"why":"Prior vibronic exciton model for porphyrin nanotubes predicting no $Q_x$–$Q_y$ mixing; it is the baseline the paper's refined model overturns.","marker":"[26]"},{"why":"Source of the $\\sigma = 200$ cm$^{-1}$ Gaussian energetic disorder used in the nanotube model, taken from single-particle chlorosome studies.","marker":"[65]"},{"why":"Introduces the $P$ polarization sequence that eliminates diagonal peaks and resolves cross-peaks in 2D spectroscopy; central to isolating $Q_x$–$Q_y$ signals.","marker":"[33]"},{"why":"Establishes that anisotropic quantum beats surviving the $P$ sequence report vibronically mixed states; underpins the beat analysis and the disorder-enhancement argument.","marker":"[36]"},{"why":"Shows how to isolate non-adiabatically enhanced ground-state quantum beats, used in assigning the 432 and 880 cm$^{-1}$ beats.","marker":"[37]"},{"why":"Chlorosome 2DES showing rapid intraband exciton delocalization and peak broadening; the comparison that frames the nanotube dynamics.","marker":"[41]"},{"why":"Reports roughly 30-fold resonance Raman enhancement of low-frequency modes upon nanotube aggregation and dark-state fluorescence decay; connects the observed beats to out-of-plane modes and dark states.","marker":"[49]"},{"why":"Shows one-particle basis sets inadequately describe resonant vibronic mixing; the paper cites it to argue its disorder-enhancement estimates are conservative.","marker":"[63]"}],"fun_headline_variants":["Disorder drives functional vibronic couplings in porphyrin nanotubes at room temp","Porphyrin nanotubes host functional vibronic couplings at room temperature via disorder","Vibronic couplings in porphyrin nanotubes need disorder at room temp","Room-temperature vibronic couplings in porphyrin nanotubes arise from disorder","Disorder is the key to room-temperature vibronic couplings in porphyrin nanotubes"],"cache_read_input_tokens":3200,"weakest_assumption_plain":"The theoretical claim that disorder enables the $Q_x$–$Q_y$ vibronic mixing assumes each porphyrin site carries Gaussian energetic disorder with standard deviation $\\sigma = 200$ cm$^{-1}$, a value imported from chlorosome single-particle studies rather than measured on these TPPS nanotubes; if the real disorder is much smaller, the model predicts almost no $Q_x$–$Q_y$ mixing.","fun_headline_variants_meta":{"raw":{"variants":["Disorder drives functional vibronic couplings in porphyrin nanotubes at room temp","Porphyrin nanotubes host functional vibronic couplings at room temperature via disorder","Vibronic couplings in porphyrin nanotubes need disorder at room temp","Room-temperature vibronic couplings in porphyrin nanotubes arise from disorder","Disorder is the key to room-temperature vibronic couplings in porphyrin nanotubes"]},"model":"deepseek-v4-flash","effort":"low","cost_usd":0.001775,"raw_usage":{"total_tokens":7012,"prompt_tokens":970,"completion_tokens":6042,"prompt_tokens_details":{"cached_tokens":384},"prompt_cache_hit_tokens":384,"prompt_cache_miss_tokens":586,"completion_tokens_details":{"reasoning_tokens":5939}},"tokens_in":586,"tokens_out":6042,"duration_ms":43512,"temperature":1.0,"reasoning_tokens":5939,"cache_read_input_tokens":384,"cache_creation_input_tokens":0},"cache_creation_input_tokens":0},"created_at":"2026-08-06T17:18:59.134272+00:00","model_set":{"reader":"deepseek-v4-flash"},"falsifier":"Measure the site-energy disorder of TPPS nanotubes directly, for example by single-nanotube absorption or low-temperature hole-burning spectroscopy. If the distribution is substantially narrower than $\\sigma \\approx 200$ cm$^{-1}$, the predicted $Q_x$–$Q_y$ electronic mixing of 22–49% drops toward zero, leaving the proposed disorder mechanism unable to explain the observed cross-peaks and beats. One could also fabricate a low-disorder porphyrin aggregate and check whether the $P$-selected cross-peaks and the 432 and 880 cm$^{-1}$ beats disappear.","supporting_citations":[{"cited_title":"Shape of the Q band in the absorption spectra of porphyrin nanotubes: Vibronic coupling or exciton effects?Journal of Chemical Physics2010, 133","cited_arxiv_id":null,"evidence_quote":"Prior vibronic exciton model for porphyrin nanotubes predicting no $Q_x$–$Q_y$ mixing; it is the baseline the paper's refined model overturns."},{"cited_title":"M.; Jendrny, M.; Bloemsma, E","cited_arxiv_id":null,"evidence_quote":"Source of the $\\sigma = 200$ cm$^{-1}$ Gaussian energetic disorder used in the nanotube model, taken from single-particle chlorosome studies."},{"cited_title":"M.; Yang, N.; Zanni, M","cited_arxiv_id":null,"evidence_quote":"Introduces the $P$ polarization sequence that eliminates diagonal peaks and resolves cross-peaks in 2D spectroscopy; central to isolating $Q_x$–$Q_y$ signals."},{"cited_title":null,"cited_arxiv_id":null,"evidence_quote":"Establishes that anisotropic quantum beats surviving the $P$ sequence report vibronically mixed states; underpins the beat analysis and the disorder-enhancement argument."},{"cited_title":"Isolating non-adiabatically enhanced ground state quantum beats through two-dimensional electronic spectroscopy.The Journal of Chemical Physics2025, 162","cited_arxiv_id":null,"evidence_quote":"Shows how to isolate non-adiabatically enhanced ground-state quantum beats, used in assigning the 432 and 880 cm$^{-1}$ beats."},{"cited_title":"Two-Dimensional ElectronicSpectroscopyRevealsUltrafastEnergyDiffusioninChlorosomes","cited_arxiv_id":null,"evidence_quote":"Chlorosome 2DES showing rapid intraband exciton delocalization and peak broadening; the comparison that frames the nanotube dynamics."},{"cited_title":null,"cited_arxiv_id":null,"evidence_quote":"Reports roughly 30-fold resonance Raman enhancement of low-frequency modes upon nanotube aggregation and dark-state fluorescence decay; connects the observed beats to out-of-plane modes and dark states."},{"cited_title":"S.; Tiwari, V","cited_arxiv_id":null,"evidence_quote":"Shows one-particle basis sets inadequately describe resonant vibronic mixing; the paper cites it to argue its disorder-enhancement estimates are conservative."}],"review_version":1}