Zobrazeno 1 - 10
of 72
pro vyhledávání: '"Piotr Piotrowiak"'
Autor:
Evert J. Elzinga, Jihua Hao, Nathan Yee, Piotr Piotrowiak, Vikas Nanda, Winnie Liu, Paul G. Falkowski
Publikováno v:
Proc Natl Acad Sci U S A
Significance When oxygenic photosynthesis evolved is debated with an uncertainty of approximately 1 Gy. It is generally assumed that the oxidation of manganese minerals requires biological catalysis or molecular oxygen and therefore is often used as
Publikováno v:
ECS Meeting Abstracts. :823-823
Electron donor-acceptor (D-A) interactions have been the subject of intense scrutiny by the scientific community due to their role in a variety of applications, such as solar energy production, photocatalysis, and stimulus-responsive materials. We ch
Publikováno v:
The journal of physical chemistry letters. 10(10)
Vibrational cooling of azulene encapsulated in a hemicarcerand molecular container was studied by pump–probe spectroscopy. Within 1.5 ps of excitation of azulene to the S1 state, rapid internal con...
Publikováno v:
The journal of physical chemistry. B. 123(8)
Vibrational cooling was investigated in a set of homologous dimers and trimers with methyl viologen repeat units (MV2+). The rapid
Autor:
Christopher E. Petoukhoff, Piotr Piotrowiak, Zheng Gong, Binxing Yu, Mengdi Liu, Jesse Kohl, Gary Z. Cheung, Deirdre M. O'Carroll
Publikováno v:
Synthetic Metals. 220:469-476
Here, we investigate the morphology, spectral absorption bandwidth and energy transfer in solution-processed, phthalocyanine-based thin films blended with conjugated polymer materials with complementary absorption bands. Unary, binary, and ternary so
Autor:
Jianhua Bao, Jason B. Benedict, Zhihao Yu, Lars Gundlach, Robert C. Snoeberger, Piotr Piotrowiak, Victor S. Batista, Philip Coppens
Publikováno v:
The Journal of Physical Chemistry C. 120:20006-20015
Fast hole hopping in Ti17cat4, a 1 nm diameter molecular polyoxotitanate cluster bearing four catechol ligands (Ti17(μ4-O)4(μ3-O)16(μ2-O)4(cat)4(OPri)16), was investigated by ultrafast spectroscopy and quantum dynamics simulations. The catechol mo
Publikováno v:
The Journal of Physical Chemistry B. 123:7490-7490
Autor:
Robert J. Cave, Piotr Piotrowiak
Publikováno v:
The Journal of Physical Chemistry B. 119:7117-7119
Publikováno v:
The Journal of Physical Chemistry C. 117:20485-20493
Strong dependence of the quantum yield of electron injection, Φinjection, on the excess vibrational energy of the short-lived S1 excited state of the donor was observed for a carboxyazulene chromophore, 6-MeAz-2-COOH, bound to the surface of colloid
Autor:
Lars Gundlach, Jason B. Benedict, Zhihao Yu, Philip Coppens, Hung Cheng Chen, Piotr Piotrowiak, John R. Miller, Jianhua Bao
Publikováno v:
The Journal of Physical Chemistry B. 117:4422-4430
The behavior of excitons and excess electrons in the confined space of a molecular polyoxotitanate cluster Ti17(μ4-O)4(μ3-O)16(μ2-O)4(OPr(i))20 (in short Ti17) was studied using femtosecond pump-probe transient absorption, pulse radiolysis, and fl