P.-N. Liao, S. Pillai, M. Kloz, D. Gust, A. L. Moore, T. A. Moore, J. T.M. Kennis, R. van Grondelle, and P. J. Walla, "On the role of excitonic interactions in carotenoid-phthalocyanine dyads and implications for photosynthetic regulation", Photosynth. Res., 111, 237-243 (2012).

C. Ilioaia, M. P. Johnson, P.-N. Liao, A. A. Pascal, R. van Grondelle, P. J. Walla, A. V. Ruban, and B. Robert, "Photoprotection in plants involves a change in lutein 1 binding domain in the major light-harvestingcomplex of photosystem II", J. Biol. Chem., 286, 27247-27254 (2011).

P.-N. Liao, S. Pillai, D. Gust, T. A. Moore, A. L. Moore, and P. J. Walla, "Two-photon study on the electronic interactions between the first excited singlet states in carotenoid-tetrapyrrole dyads", J. Phys. Chem. A, 115, 4082-4091 (2011).

P.-N. Liao, C.-P. Holleboom, L. Wilk, W. Kühlbrandt, P. J. Walla, "Correlation of Car S₁ --> Chl with Chl --> Car S₁ Energy Transfer Supports the Excitonic Model in Quenched Light Harvesting Complex II", J. Phys. Chem. B, 114, 15650-15655 (2010).

P. J. Walla, "Regulation der Photosynthese:Gangschaltung für die Speicherung solarer Energie", Chemie in unserer Zeit, 44, 1, 66-67 (2010).

P.-N. Liao, S. Bode, L. Wilk, N. Hafi, P. J. Walla, "Correlation of electronic carotenoid–chlorophyll interactions and fluorescence quenching with the aggregation of native LHC II and chlorophyll deficient mutants", Chemical Physics, 373, 1-2, 50-55 (2010).

H. Hippchen, W. H. Pohl, P. J. Walla, "Single-Particle Identification of Encoded Nanospheres", Journal of Biomolecular Screening, 15, 2, 218-223 (2010).

A. Cypionka , A. Stein , J. M. Hernandez , H. Hippchen , R. Jahn , P. J. Walla "Discrimination between docking and fusion of liposomes reconstituted with neuronal SNARE-proteins using FCS", PNAS, 106, 44, 18575-18580 (2009).

S. Bode, C. C. Quentmeier, P. N. Liao, N. Hafi, T. Barros, L. Wilk, F. Bittner, P. J. Walla "On the regulation of photosynthesis by excitonic interactions between carotenoids and chlorophylls", PNAS, 106, 30, 12311-12316 (2009).

S. Quentmeier, C. C. Quentmeier, P. J. Walla , K.-H. Gericke "Two-Color Two-Photon Excitation of Intrinsic Protein Fluorescence: Label-Free Observation of Proteolytic Digestion of Bovine Serum Albumin", ChemPhysChem, 10, 1607-1213 (2009).

P. J. Walla, Modern Biophysical Chemistry, Wiley-VCH (2009)

U. Haupts, O. Hesse, M. Strerath, P. J. Walla and W. M. Coco "Confocal and Conventional Fluorescence-Based High Throughput Screening in Protein Engineering", in Protein Engineering Handbook, Lutz, Stefan / Bornscheuer, Uwe Theo (eds.) (2008).

S. Bode, C. C. Quentmeier; P.-N. Liao, T. Barros, P. J. Walla, "Xanthophyll-cycle dependence of the energy transfer between carotenoid dark states and chlorophylls in NPQ mutants of living plants and in LHC II", Chemical Physics Letters, 450, Issues 4-6, 379-385 (2008).

A. Wehling, W. H. Pohl, B. Gerke, S. Kipp, P. J. Walla, "Generation of nanopores down to 10 nm for the use in deep-nulling interferometry" ChemPhysChem 9, Issue 2, 327-331  (2008).

P. J. Walla, "Microscope" WO/2007/020272 (2007)
 

P. J. Walla, U. Kettling, A. Koltermann, “Multi-Parameter fluorimetric analysis in a massively parallel multi-focal arrangement and the use thereof” US 7170598 (2007).

C. C. Quentmeier, A. Wehling and P. J. Walla, “A bioassay based on the ultrafast response of a reporter molecule”, Journal of Biomolecular Screening 12 No.3, 341-350, (2007).

D. Zwilling, A. Cypionka, W. Pohl, D. Fasshauer, P. J. Walla, M. Wahl, R. Jahn, „Early endosomal SNAREs form a structurally conserved SNARE complex and fuse liposomes with multiple topologies”, EMBO Journal 26 (1), 9-18, (2007).

A. Wehling and P. J. Walla, "A Two-Photon Excitation Study on the Role of Carotenoid Dark States in the Regulation of Plant Photosynthesis”, Photosynthesis Research 90 Nr. 2, 101-110, (2006).

W. Pohl, H. Hellmuth, M. Hilbert, J. Seibel and Peter J. Walla, "A two-photon fluorescence correlation study of lectins interacting with carbohydrated 20 nm beads”, ChemBioChem 7, 268-274, (2006).

Jan S. Frähmcke and Peter J. Walla,  “Coulombic couplings between pigments in the major light-harvesting complex LHC II calculated by the transition density cube method”, Chemical Physics Letters 430, Issues 4-6, 397-403 (2006).

M. Hilbert, H. Hippchen, A. Wehling and P. J. Walla, "Correlational analysis of proteins and non-metallic nano particles in a deep-nulling microscope”, Journal of Physical Chemistry B, 109, 18162-18170, (2005)

A. Wehling and P. J. Walla, "Timeresolved Two-Photon Spectroscopy of PS I determines hidden Energy Path Ways”, The Journal of Physical Chemistry B 109, 24510-24516(2005).

P. J. Walla and B. Nickel, "Intramolecular proton transfer and tunnelling reactions of hydroxyphenylbenzoxazole derivatives in Xenon at 15 K”, Chemical Physics 312, 177–185 (2005).

P. J. Walla, “New Frontiers in optical single molecule detection – Nanoparticle analysis based on deep-nulling interferometry?”, MPIbpc News 1-2, 1–5 (2005).

M. Hilbert, P. J. Walla “Correlational analysis of proteins and non-metallic nano particles in a deep-nulling microscope”, MPIbpc News 9, 18–19 (2005).

P. J. Walla, “Wellenfront-Analyse Mikroskop”, patent application (2005).

M. Hilbert, A. Wehling, E. Schlodder and P. J. Walla, "Two-photon sensitized fluorescence and excitation spectra of photosystem I of Thermosynechococcus elongatus “, The Journal of Physical Chemistry B 108, 13022-13030 (2004).

P. J. Walla, U. Kettling, A. Koltermann, M. Scharte, “Multi-Parameter fluorimetric analysis in a massively parallel multi-focal arrangement and the use thereof” WO/2004/036195, PCT/EP2003/011437, EP 1411345 (2004).

P. J. Walla, P. A. Linden, K. Ohta, G. R. Fleming, “Excited-State Kinetics of the Carotenoid S₁ State in LHC II and Two-Photon Excitation Spectra of Lutein and β -Carotene in Solution: Efficient Car S₁ → Chl Electronic Energy Transfer via Hot S₁ States? ", The Journal of Physical Chemistry A 106, 1909–1916 (2002).

C.-P. Hsu, P. J. Walla, M. Head-Gordon, G. R. Fleming, "The Role of the S₁ State of carotenoids in Photosynthetic Energy Transfer: The Light Harvesting Complex II of Purple Bacteria", The Journal of Physical Chemistry B 105, 11016–11025 (2001).

P. J. Walla, P. A. Linden, C.–P. Hsu, G. D. Scholes and G. R. Fleming, “Femtosecond dynamics of the forbidden carotenoid S₁ state in light-harvesting complexes of purple bacteria observed after two-photon excitation”, Proc. Natl. Acad. Sci. 97, 10808–10813 (2000).

P. J. Walla, P. A. Linden and G. R. Fleming, “Fs-transient Absorption and Fluorescence Upconversion after Two-Photon Excitation of Carotenoids in solution and in LHC II”, in Ultrafast Phenomena XII, T. Elsaesser,S. Mukamel, M. Murmane, N. F., Eds., Springer: New York, 671-673, (2000).

P. J. Walla, J. Yom, B. P. Krueger and G. R. Fleming, “Two-Photon Excitation Spectrum of Light-Harvesting Complex II and Fluorescence Upconversion after One- and Two-photon Excitation of the Carotenoids”, The Journal of Physical Chemistry B 104, 4799–4806 (2000).

B. P. Krueger, J. Yom, P. J. Walla and G. R. Fleming, “Observation of the S₁ state of spheroidene in LH2 by two-photon fluorescence excitation”, Chem. Phys. Lett. 310, 57–64 (1999).

P. J. Walla, F. Jelezko, Ph. Tamarat, B. Lounis and M. Orrit, “Perylene in biphenyl and anthracene crystals: an example of the influence of the host on single-molecule signals”, Chem. Phys. 233, 117–125 (1998).

B. Nickel and P. J. Walla, “Peculiarity of triplet-triplet energy transfer from 2-(2´-hydroxyphenyl)benzoxazole to diacetyl. Evidence for radiative keto-enol transitions ³K*→¹E and ¹E→¹K*”, Chem. Phys. 237, 371–394 (1998).

B. Nickel, K. H. Grellmann, J. S. Stephan and P. J. Walla, “Keto-enol tautomerism in the triplet state of hydroxyphenylbenzoxazoles in an alkane glass: hydrogen tunneling and isotope effects down to 2 K”, Ber. Bunsenges. Phys. Chem. 102, 436–447 (1998).